NTCG103EH101HT1_技术文档

T e m p e r a t u r e P r o t e c t i o n D e v i c e s

December 2017

Temperature protection devices

Chip NTC thermistor

Commercial grade

NTCGseries

NTCG 0603 JIS 0603 [EIA 0201]

NTCG 1005 JIS 1005 [EIA 0402]

NTCG 1608 JIS 1608 [EIA 0603]

NTCG 2012 JIS 2012 [EIA 0805]

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Temperature Protection Devices

REMINDERS FOR USING THESE PRODUCTS

Before using these products, be sure to request the delivery specifications.

SAFETY REMINDERS

Please pay sufficient attention to the warnings for safe designing when using this products.

REMINDERS

Incorrect usage may lead to destroyed NTC thermistors and damages or malfunctions with the devices used.

Please use them within the ranges of the ratings and performance provided in the catalog and delivery specifications upon confirming

the environments where they are to be used and installed.

Do not use them outside the operating temperature range.

Do not use them with the ratings or maximum permissible power levels exceeded.

Do not quickly apply 5mW or more of load with the constant-voltage power supply in the NTC thermistors as this may lead to staying in

thermal runaway mode or the red-shorting of chips.

Please be cautious of the applied voltage in thermistors as instruments may malfunction with the lowering of resistance due to self

heating.

With instruments that consumers can touch the thermistors with their hands, please carefully warn them not to touch the thermistors.

Store them in locations where the temperature is 10°C to +40°C and the relative humidity is 75% or below, avoid environments where

there are sudden changes in temperatures, direct sunlight, corrosive gas, grit, or dust, and keep them packed in a manner where no

loading stress is applied in order to avoid deterioration and damage. (please use them within six months.)

When sealing thermistors, please do so upon first considering the type, quantity, hardening conditions, and adhesiveness of the seal-

ing material and confirming its reliability.

Avoid powerful vibrations, impact (such as by dropping), pressure, etc. on thermistors that exceed the prescribed levels.

Do not use them for long periods of time in environments with a relative humidity of over 85%. (this excludes cases where countermea-

sures have been taken.)

Do not use them in the following environments. (this excludes cases where countermeasures have been taken.)

・Corrosive gases (Cl2, NH3, SOx, NOx, etc.)

・Environments with highly conductive substances (electrolytes, water, saltwater, etc.)

・Environments with acid, alkali, or organic solvents

・Dusty areas

Please observe the following precautions when attaching them to substrates as failure to do so may result in destruction or malfunction.

・Do not let the substrates get warped or twisted at any time during the soldering.

・The landing size must be even on both the left and right sides.

・Do not use items that have been dropped or detached.

・Do not allow the adherence of more solder than needed.

Reflow mounting is recommended with NTC thermistors, and not flow (dip) mounting.

Attaching or making corrections with a soldering iron is not recommended as it can lead to troubles such as significant distorting due to

thermal shock or cracking. If a soldering iron must be used, it should be 20W or below with the temperature of the tip at 350°C or

below, and at a maximum of 5 seconds of soldering time. Also, do not let the tip of the soldering iron come in direct contact with the

chips.

Please use a substance such as resin that does not generate hydrogen (H2) when forming insulation film over chips.

Please contact our sales offices when considering the use of the products listed on this catalog for applications, whose performance

and/or quality require a more stringent level of safety or reliability, or whose failure, malfunction or trouble could cause serious damage

to society, person or property ('specific uses' such as automobiles, airplanes,medical instruments, nuclear devices, etc.) as well as

when considering the use for applications that exceed the range and conditions of this catalog.

Please note that we are not responsible for any damages or losses incurred resulting from the use of these products that exceeds the

range and conditions of this catalog or specific uses.

Please take appropriate measures such as acquiring protective circuits and devices that meet the uses, applications, and conditions of

the instruments and keeping backup circuits.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Overview of the NTCG series

CHARACTERISTICS OF NTC THERMISTORS

FEATURES OF NTCG SERIES

NTC(Negative Temperature Coefficient) thermistors are

manufactured from sintered metal oxides. Each thermistor

consists of a combination of two to four of the following materials:

manganese, nickel, cobalt and copper. NTC thermistors are

semiconductor resistors that exhibit decreasing

0603 to 2012mm wide lineup

125°C

UL1434 acquisition (FileꢀNo.E250289)

resistancecharacteristics with increasing temperature. TDK

thermistors have low thermal time constants which result in

extremely high rates of resistance change to accurately track the

temperature.

Fig.1 R-T Curve : 10kohm@25°C

Fig.2 Internal structure of the multilayer chip thermistors

1000

①

100

10

1

②

③

⑤

④

0.1

–40

0

50

100

150

200

(

)

Temperature °C

No.

(1)

(2)

(3)

(4)

(5)

Name

Semiconductor ceramics

Internal electrode(Pd)

Ag

Terminal electrode Ni

Sn

RoHS Directive Compliant Product: See the following for more details. https://product.tdk.com/info/en/environment/rohs/index.html

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Overview of the NTCG series

APPLICATIONS

◆ Battery

◆ Smart phones

◆ LED

◆ Wireless charger

COMMERCIAL GRADE

Use circuit

example

Various-circuit temperature compensated circuit

PA, PMIC

Power

Amp

Target

Dimensions

Code

JIS[EIA]

Vout

Circuit example

Resistance(R25)

Vout

Type

1k

22k

68k

10k

3435K to 4100K

B constant

(B25/85)

3100K to 4100K

3435K to 4550K

4000K to 4550K

0603 [0201]

1005 [0402]

1608 [0603]

N/A

NTCG063JF223HTBX

NTCG104LH223HT1

NTCG164LH223HT1

NTCG064EF683FTBX

NTCG104BF683FT1X

NTCG164LH683HT1

NTCG064BH103HTB

NTCG104BH103HT1

NTCG164BH103HT1

General

NTCG104BH102HT1

NTCG164BH102HT1

Use circuit

example

BMS

LCD

LED

Target

Dimensions

Code

JIS[EIA]

Vout

Circuit example

Resistance(R25)

Vout

Type

10k

47k

100k

B constant

(B25/85)

3435K to 4100K

4000K to 4550K

4150K to 4550K

0603 [0201]

1005 [0402]

1608 [0603]

NTCG063JF103FTB

NTCG103JF103FT1

NTCG163JF103FT1

NTCG064BF473FTBX

NTCG104BF473FT1X

NTCG164BF473FT1

NTCG064EF104FTBX

NTCG104EF104FT1X

NTCG164KF104FT1

General

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Overview of the NTCG series

PART NUMBER CONSTRUCTION

NTC

G

3E

H

101

T

○○

□

Nominal

resistance

tolerance

(%)

□□□

shapes and

dimensions

Code

B

Nominal

resistance

Structural

classification

B

constant

tolerance

(%)

Packaging

style

Series name

TDK internal code

constant^

(mm)

()

Commercial grade

(other than 0603mm)

B constant: 25/85°C

NTC

thermistor

Multilayer internal

electroded

chip type

NTC thermistor

(Pb free type)

06 0603

10 1005

X

F

0.7

1

300

30

D

F

0.5

1

T

Taping

1

G

Commercial grade

(other than 0603mm)

B constant: 25/50°C

101

100

1X

1000

(1k)

10000

(10k)

Commercial grade (0603mm)

B constant: 25/85°C

Commercial grade (0603mm)

B constant: 25/50°C

16 1608

20 2012

H

J

3

5

102

103

H

J

3

5

B

BX

^B constant

B constant (K)

2000 to 2050

2051 to 2100

2101 to 2150

2201 to 2250

2251 to 2300

2401 to 2450

2451 to 2500

2501 to 2550

2601 to 2650

2701 to 2750

2801 to 2850

3A

3B

3C

3E

3F

3J

3K

3L

3N

3Q

3S

3000 to 3050

3051 to 3100

3101 to 3150

3201 to 3250

3251 to 3300

3401 to 3450

3451 to 3500

3501 to 3550

3601 to 3650

3701 to 3750

3801 to 3850

4A

4B

4C

4E

4F

4J

4K

4L

4N

4Q

4S

4000 to 4050

4051 to 4100

4101 to 4150

4201 to 4250

4251 to 4300

4401 to 4450

4451 to 4500

4501 to 4550

4601 to 4650

4701 to 4750

4801 to 4850

2A

2B

2C

2E

2F

2J

2K

2L

2N

2Q

2S

The B constant indicates the magnitude of a change in a zero-load resistance value to a temperature, and is obtained based on arbitrary

two temperatures in resistance-to-temperature characteristics.

B constant calculation formula

B: B constant (K)

InR1–InR2

B=

T1: Arbitrary temperature (K)

(1/T1)–(1/T2)

T2: Arbitrary temperature different from T1 (K)

R1:Zero-load resistance value at temperature T1()

R2: Zero-load resistance value at temperature T2()

Each temperature is measured in absolute temperature. 0°C=273.15K

W

L

Dimemsions in mm

B

T

Shape symbol (JIS)

L

W

T

0603

1005

1608

2012

0.60 0.03

1.00 0.05

1.60 0.10

2.00 0.20

0.30 0.03

0.50 0.05

0.80 0.10

1.25 0.20

0.30 0.03

0.50 0.05

0.80 0.10

0.70 0.20

0.15 0.05

0.1min

0.2min

B

OPERATING TEMPERATURE RANGE, PACKAGE QUANTITY, PRODUCT WEIGHT

Temperature range

Package quantity

Individual weight

Type





Operating temperature

Storage temperature

(°C)

(pieces/reel)

15,000

10,000

（mg）

0.3

1.3

5.0

7.2

NTCG06

NTCG10

NTCG16

NTCG20

–40 to 125

4,000

2,000



Operating temperature range includes self-temperature rise.

The storage temperature range is for after the assembly.



Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Characteristic map of NTCG series

COMMERCIAL GRADE (RESISTANCE: 22 to 10k )

Dimen-

sions

[JIS]

B constant

Catalog number

Resis-

tance

Thickness

(mm)

[25/ 85°C] [25/ 50°C]

Resistance tolerance: 0.5% Resistance tolerance: 1%

Resistance tolerance: 3%

Resistance tolerance: 5%

22

30

1005

1608

0603

1005

1608

1005

1608

1005

1608

2012

1005

2012

1005

1608

2012

1005

2012

1005

1608

2012

1608

1005

1608

2012

0.5 0.05

0.8 0.1

0.3 0.03

0.5 0.05

0.8 0.1

0.5 0.05

0.8 0.1

0.5 0.05

0.8 0.1

0.7 0.2

0.5 0.05

0.7 0.2

0.5 0.05

0.8 0.1

0.7 0.2

0.5 0.05

0.7 0.2

0.5 0.05

0.8 0.1

0.7 0.2

0.8 0.1

0.5 0.05

0.8 0.1

0.7 0.2

NTCG103EH220JT1

NTCG103EH300JT1

NTCG163EH300JT1

3,250 K

3,244 K

NTCG063EH400HTB

NTCG103EH400HT1

NTCG163EH400HT1

40

NTCG103EH400JT1

NTCG163EH400JT1

NTCG103EH470JT1

NTCG103EH101JT1

NTCG163EH101JT1

NTCG163EH151JT1

NTCG163NH221JT1

NTCG163NH331JT1

NTCG103NH471JT1

NTCG163NH471JT1

NTCG203EH471JT1

NTCG103NH681JT1

NTCG203EH681JT1

NTCG104BH102JT1

NTCG164BH102JT1

NTCG203BH102JT1

NTCG104BH152JT1

NTCG203BH152JT1

NTCG104BH222JT1

NTCG164BH222JT1

NTCG203FH222JT1

NTCG164BH302JT1

NTCG104BH332JT1

NTCG164BH332JT1

NTCG203FH332JT1

NTCG103LH472JT1

NTCG104BH472JT1

NTCG164BH472JT1

NTCG203JH472JT1

NTCG104BH682JT1

NTCG164BH682JT1

NTCG203JH682JT1

47

NTCG103EH101HT1

NTCG163EH101HT1

100

3,250 K

3,244 K

150

220

330

3,650 K

3,642 K

470

680

1k

3,250 K

3,650 K

3,250 K

3,231 K

3,642 K

3,231 K

NTCG104BH102HT1

NTCG164BH102HT1

4,100 K

4,096 K

3,100 K

4,100 K

3,100 K

3,057 K

4,096 K

3,057 K

1.5k

4,100 K

3,300 K

4,096 K

2.2k

3k

3,248 K

4,096 K

4,100 K

4,067 K

3.3k

NTCG164BH332HT1

3,300 K

3,545 K

3,248 K

3,500 K

1005

0.5 0.05

NTCG104BH472HT1

NTCG164BH472HT1

4.7k

6.8k

4,100 K

3,450 K

4,100 K

3,450 K

3,435 K

4,067 K

3,393 K

4,067 K

3,393 K

3,380 K

1608

2012

1005

1608

2012

0.8 0.1

0.7 0.2

0.5 0.05

0.8 0.1

0.7 0.2

NTCG063JF103HTB

NTCG063JH103HTB

NTCG063JH103JTB

NTCG063JF103JTB

NTCG063JF103FTB

0603

1005

0.3 0.03

0.5 0.05

3,950 K

4,100 K

3,888 K

4,067 K

NTCG063UH103HTBX

NTCG064BH103HTB

NTCG064BH103JTB

NTCG103JF103HT1

NTCG103JH103HT1

NTCG103JF103JT1

NTCG103JH103JT1

3,435 K

3,380 K

NTCG103JX103DT1

NTCG103JF103FT1

NTCG163JF103FT1

10k

3,950 K

4,100 K

3,888 K

4,067 K

NTCG103UH103HT1

NTCG104BH103HT1

NTCG103UH103JT1

NTCG104BH103JT1

NTCG163JF103HT1

NTCG163JH103HT1

3,435 K

3,380 K

NTCG163JH103JT1

1608

2012

0.8 0.1

0.7 0.2

NTCG164BF103HT1

NTCG164BH103HT1

4,100 K

3,650 K

4,067 K

3,589 K

NTCG164BH103JT1

NTCG203NH103JT1

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

(7/21)

Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Characteristic map of NTCG series

COMMERCIAL GRADE (RESISTANCE: 15k to 1000k)

Dimen-

sions

[JIS]

B constant

Catalog number

Resis-

tance

Thickness

(mm)

[25/ 85°C] [25/ 50°C]

Resistance tolerance: 0.5% Resistance tolerance: 1%

Resistance tolerance: 3%

Resistance tolerance: 5%

1005

1608

2012

0603

1005

1608

2012

1005

1608

2012

0603

0.5 0.05

0.8 0.1

0.7 0.2

0.3 0.03

0.5 0.05

0.8 0.1

0.7 0.2

0.5 0.05

0.8 0.1

0.7 0.2

0.3 0.03

NTCG104BH153HT1

NTCG104BH153JT1

NTCG164BH153JT1

NTCG203NH153JT1

4,100 K

4,067 K

15k

22k

33k

4,150 K

3,435 K

4,085 K

3,380 K

NTCG063JF223HTBX

NTCG104LH223HT1

NTCG164LH223HT1

NTCG104LH223JT1

NTCG164LH223JT1

NTCG203SH223JT1

NTCG104LH333JT1

NTCG164LH333JT1

NTCG203SH333JT1

NTCG064BF473JTBX

NTCG104BF473JT1X

NTCG104LH473JT1

NTCG164LH473JT1

NTCG204AH473JT1

NTCG064EF683JTBX

NTCG104BF683JT1X

NTCG104LH683JT1

NTCG164LH683JT1

NTCG204AH683JT1

4,550 K

3,850 K

4,550 K

4,485 K

3,783 K

4,485 K

3,850 K

4,114 K

4,550 K

4,000 K

4,308 K

4,150 K

3,783 K

4,050 K

4,485 K

3,930 K

4,250 K

4,085 K

NTCG064BF473FTBX

NTCG104BF473FT1X

NTCG064BF473HTBX

NTCG104BF473HT1X

NTCG104LH473HT1

NTCG164LH473HT1

1005

0.5 0.05

47k

68k

1608

2012

0603

0.8 0.1

0.7 0.2

0.3 0.03

NTCG064EF683FTBX

NTCG104BF683FT1X

NTCG104BF683HT1X

NTCG104LH683HT1

NTCG164LH683HT1

1005

0.5 0.05

4,550 K

4,485 K

1608

2012

0.8 0.1

0.7 0.2

4,000 K

4,150 K

4,308 K

4,550 K

3,930 K

4,085 K

4,250 K

4,485 K

NTCG064BF104FTBX

NTCG064EF104FTBX

0603

0.3 0.03

NTCG064EF104HTBX

NTCG064LH104HTB

NTCG064EF104JTBX

NTCG064LH104JTB

NTCG104EF104HT1X

NTCG104EH104HT1X

4,308 K

4,550 K

4,485 K

4,150 K

4,550 K

4,150 K

4,250 K

4,485 K

4,419 K

4,085 K

4,485 K

4,085 K

NTCG104ED104DT1X

NTCG104EF104FT1X

100k

1005

0.5 0.05

NTCG104LH104HT1

NTCG104KF104HT1

NTCG164LH104HT1

NTCG104LH104JT1

NTCG104KF104FT1

NTCG164KF104FT1

1608

2012

1005

0.8 0.1

0.7 0.2

0.5 0.05

0.8 0.1

0.7 0.2

0.5 0.05

0.8 0.1

0.5 0.05

0.8 0.1

0.5 0.05

0.8 0.1

0.5 0.05

0.8 0.1

NTCG164LH104JT1

NTCG204CH104JT1

NTCG104LH154JT1

NTCG164LH154JT1

NTCG204CH154JT1

NTCG104QH224JT1

NTCG164QH224JT1

NTCG104QH334JT1

NTCG164QH334JT1

NTCG104QH474JT1

NTCG164QH474JT1

NTCG104QH105JT1

NTCG164QH105JT1

150k 1608

NTCG164LH154HT1

2012

1005

220k

NTCG104QH224HT1

NTCG164QH224HT1

NTCG104QH334HT1

1608

4,750 K

4,662 K

1005

330k

1608

1005

470k

NTCG104QH474HT1

NTCG164QH474HT1

NTCG104QH105HT1

NTCG164QH105HT1

1608

1005

1000k

1608

RATINGS

mm

mW

mW/°C | mW/K

0603

100

1

1005

100

1

1608

100

1

2012

200

2

Size



1

Maximum rated power 25°C)



2

Dissipation factors (25°C)



¹Maximum rated power: Maximum power: at rated temperature (25°C), maximum power that can be applied continuously

²Dissipation factors: powered that it is equivalent that be increased in self-heating by load power thermistor at 1°C temperature



Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

ꢀ

NTCG series 0603 type

SHAPE & DIMENSIONS

RECOMMENDED LAND PATTERN

0.6 0.03

0.2 to 0.3 0.25 to 0.35 0.2 to 0.3

0.15 0.05

Electrode material

Internal:Pd

External:Ag/Ni/Sn

Dimensions in mm

JIS 0603 [EIA 0201]

Part No.

Resistance Resistance B constant B constant B constant B constant B constant Permissible Operating

RT

value

tolerance

tolerance operating

temperature table

range

current

[25°C]

(mA)

[25°C]

()

[25/50°C] [25/75°C] [25/85°C] [25/100°C]

(K)

(°C)

NTCG063EH400HTB

NTCG063JF103FTB

NTCG063JF103HTB

NTCG063JF103JTB

NTCG063JH103HTB

NTCG063JH103JTB

NTCG063UH103HTBX

NTCG064BH103HTB

NTCG064BH103JTB

NTCG063JF223HTBX

NTCG064BF473FTBX

NTCG064BF473HTBX

NTCG064BF473JTBX

NTCG064EF683FTBX

NTCG064EF683JTBX

40

+/–3%

+/–1%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–1%

+/–3%

+/–5%

+/–1%

+/–5%

+/–1%

+/–3%

+/–5%

+/–3%

+/–5%

3244

3380

3900

4067

3380

4050

4250

4050

4250

4485

3249

3422

3934

4092

3422

4098

4293

4134

4293

4533

3250

3435

3950

4100

3435

4114

4308

4114

4308

4550

3251

3453

3971

4110

3453

4137

4327

4137

4327

4573

+/–3%

+/–1%

+/–3%

+/–1%

+/–3%

5.00

0.31

0.21

0.14

0.12

0.10

–40 to 125

csv

10,000

22,000

47,000

68,000

NTCG064BF104FTBX 100,000

NTCG064EF104FTBX 100,000

NTCG064EF104HTBX 100,000

NTCG064EF104JTBX 100,000

NTCG064LH104HTB

NTCG064LH104JTB

100,000

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

(9/21)

Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

ꢀ

NTCG series 1005 type

SHAPE & DIMENSIONS

RECOMMENDED LAND PATTERN

1 0.05

0.35 to 0.45 0.3 to 0.5 0.35 to 0.45

0.1 min.

Electrode material

Internal:Pd

External:Ag/Ni/Sn

Dimensions in mm

JIS 1005 [EIA 0402] ( 22 to 10k )

Part No.

Resistance Resistance B constant B constant B constant B constant B constant Permissible Operating

RT

value

tolerance

tolerance operating

temperature table

range

current

[25°C]

(mA)

[25°C]

()

[25/50°C] [25/75°C] [25/85°C] [25/100°C]

(K)

(°C)

NTCG103EH220JT1

NTCG103EH300JT1

NTCG103EH400HT1

NTCG103EH400JT1

NTCG103EH470JT1

NTCG103EH101HT1

NTCG103EH101JT1

NTCG103NH471JT1

NTCG103NH681JT1

NTCG104BH102HT1

NTCG104BH102JT1

NTCG104BH152JT1

NTCG104BH222JT1

NTCG104BH332JT1

NTCG103LH472JT1

NTCG104BH472HT1

NTCG104BH472JT1

NTCG104BH682JT1

NTCG103JF103FT1

NTCG103JF103GT1

NTCG103JF103HT1

NTCG103JF103JT1

NTCG103JH103HT1

NTCG103JH103JT1

NTCG103JX103DT1

NTCG103UH103HT1

NTCG103UH103JT1

NTCG104BH103HT1

NTCG104BH103JT1

NTCG104BH153HT1

NTCG104BH153JT1

22

30

40

47

100

470

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–1%

+/–2%

+/–3%

+/–5%

+/–3%

+/–5%

+/–0.5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

3244

3642

4096

4067

3500

4067

3380

3900

4067

3249

3649

4100

4092

3532

4092

3422

3934

4092

3250

3650

4100

3545

4100

3435

3950

4100

3251

3650

4100

4110

3564

4110

3453

3971

4110

+/–3%

+/–1%

+/–3%

+/–0.7%

+/–3%

6.70

5.70

5.00

4.61

3.10

1.40

1.20

1.00

0.81

0.67

0.55

0.46

0.38

0.31

0.25

–40 to 125

csv

680

1,000

1,500

2,200

3,300

4,700

6,800

10,000

15,000

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

(10/21)

Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

ꢀ

NTCG series 1005 type

SHAPE & DIMENSIONS

RECOMMENDED LAND PATTERN

1 0.05

0.35 to 0.45 0.3 to 0.5 0.35 to 0.45

0.1 min.

Electrode material

Internal:Pd

External:Ag/Ni/Sn

Dimensions in mm

JIS 1005 [EIA 0402] ( 22K to 1,000k )

Part No.

Resistance Resistance B constant B constant B constant B constant B constant Permissible Operating

RT

value

tolerance

tolerance operating

temperature table

range

current

[25°C]

(mA)

[25°C]

()

[25/50°C] [25/75°C] [25/85°C] [25/100°C]

(K)

(°C)

NTCG104LH223HT1

NTCG104LH223JT1

NTCG104LH333JT1

NTCG104BF473FT1X

NTCG104BF473HT1X

NTCG104BF473JT1X

NTCG104LH473HT1

NTCG104LH473JT1

NTCG104BF683FT1X

NTCG104BF683HT1X

NTCG104BF683JT1X

NTCG104LH683HT1

NTCG104LH683JT1

NTCG104ED104DT1X

NTCG104EF104FT1X

NTCG104EF104HT1X

NTCG104EH104HT1X

NTCG104KF104FT1

NTCG104KF104HT1

NTCG104LH104HT1

NTCG104LH104JT1

NTCG104LH154JT1

NTCG104QH224HT1

NTCG104QH224JT1

NTCG104QH334HT1

NTCG104QH334JT1

NTCG104QH474HT1

NTCG104QH474JT1

NTCG104QH105HT1

NTCG104QH105JT1

22,000 +/–3%

4485

4050

4485

4085

4485

4250

4419

4485

4661

4533

4098

4533

4134

4533

4293

4468

4533

4728

4550

4114

4550

4150

4550

4308

4485

4550

4750

4573

4137

4573

4172

4573

4327

4508

4573

4780

+/–3%

+/–1%

+/–3%

+/–1%

+/–3%

+/–0.5%

+/–1%

+/–3%

+/–1%

+/–3%

0.21

0.17

0.14

0.12

0.10

0.08

0.06

0.05

0.04

0.03

–40 to 125

csv

22,000 +/–5%

33,000 +/–5%

47,000 +/–1%

47,000 +/–3%

47,000 +/–5%

47,000 +/–3%

47,000 +/–5%

68,000 +/–1%

68,000 +/–3%

68,000 +/–5%

68,000 +/–3%

68,000 +/–5%

100,000 +/–0.5%

100,000 +/–1%

100,000 +/–3%

100,000 +/–1%

100,000 +/–3%

100,000 +/–5%

150,000 +/–5%

220,000 +/–3%

220,000 +/–5%

330,000 +/–3%

330,000 +/–5%

470,000 +/–3%

470,000 +/–5%

1,000,000 +/–3%

1,000,000 +/–5%

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

(11/21)

Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

ꢀ

NTCG series 1608 type

SHAPE & DIMENSIONS

RECOMMENDED LAND PATTERN

1.6 0.1

0.6 to 0.8 0.6 to 0.8 0.6 to 0.8

0.2 min.

Electrode material

Internal:Pd

External:Ag/Ni/Sn

Dimensions in mm

JIS 1608 [EIA 0603] ( 30 to 10k )

Part No.

Resistance Resistance B constant B constant B constant B constant B constant Permissible Operating

RT

value

tolerance

tolerance operating

temperature table

range

current

[25°C]

(mA)

[25°C]

()

[25/50°C] [25/75°C] [25/85°C] [25/100°C]

(K)

(°C)

NTCG163EH300JT1

NTCG163EH400HT1

NTCG163EH400JT1

NTCG163EH101HT1

NTCG163EH101JT1

NTCG163EH151JT1

NTCG163NH221JT1

NTCG163NH331JT1

NTCG163NH471JT1

NTCG164BH102HT1

NTCG164BH102JT1

NTCG164BH222JT1

NTCG164BH302JT1

NTCG164BH332HT1

NTCG164BH332JT1

NTCG164BH472HT1

NTCG164BH472JT1

NTCG164BH682JT1

NTCG163JF103FT1

NTCG163JF103HT1

NTCG163JH103HT1

NTCG163JH103JT1

NTCG164BF103HT1

NTCG164BH103HT1

NTCG164BH103JT1

30

40

100

150

220

330

470

1,000

2,200

3,000

3,300

4,700

6,800

10,000

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–3%

+/–5%

+/–1%

+/–3%

+/–5%

+/–3%

+/–5%

3244

3642

4096

4067

3380

4037

4067

3249

3649

4100

4092

3422

4092

3250

3650

4100

3435

4070

4100

3251

3650

4100

4110

3453

4080

4110

+/–3%

+/–1%

+/–3%

+/–1%

+/–3%

5.70

5.00

3.10

2.50

2.10

1.70

1.40

1.00

0.67

0.57

0.55

0.46

0.38

0.31

–40 to 125

csv

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

(12/21)

Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

ꢀ

NTCG series 1608 type

SHAPE & DIMENSIONS

RECOMMENDED LAND PATTERN

1.6 0.1

0.6 to 0.8 0.6 to 0.8 0.6 to 0.8

0.2 min.

Electrode material

Internal:Pd

External:Ag/Ni/Sn

Dimensions in mm

JIS 1608 [EIA 0603] ( 22k to 1,000k )

Part No.

Resistance Resistance B constant B constant B constant B constant B constant Permissible Operating

RT

value

tolerance

tolerance operating

temperature table

range

current

[25°C]

(mA)

[25°C]

()

[25/50°C] [25/75°C] [25/85°C] [25/100°C]

(K)

(°C)

NTCG164BH153JT1

NTCG164LH223HT1

NTCG164LH223JT1

NTCG164LH333JT1

NTCG164LH473HT1

NTCG164LH473JT1

NTCG164LH683HT1

NTCG164LH683JT1

NTCG164KF104FT1

NTCG164LH104HT1

NTCG164LH104JT1

NTCG164LH154HT1

NTCG164LH154JT1

NTCG164QH224HT1

NTCG164QH224JT1

NTCG164QH334JT1

NTCG164QH474HT1

NTCG164QH474JT1

NTCG164QH105HT1

NTCG164QH105JT1

15,000 +/–5%

4067

4485

4419

4485

4661

4092

4533

4468

4533

4728

4100

4550

4485

4550

4750

4110

4573

4508

4573

4780

+/–3%

+/–1%

+/–3%

0.25

0.21

0.17

0.14

0.12

0.10

0.08

0.06

0.05

0.04

0.03

–40 to 125

csv

22,000 +/–3%

22,000 +/–5%

33,000 +/–5%

47,000 +/–3%

47,000 +/–5%

68,000 +/–3%

68,000 +/–5%

100,000 +/–1%

100,000 +/–3%

100,000 +/–5%

150,000 +/–3%

150,000 +/–5%

220,000 +/–3%

220,000 +/–5%

330,000 +/–5%

470,000 +/–3%

470,000 +/–5%

1,000,000 +/–3%

1,000,000 +/–5%

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

ꢀ

NTCG series 2012 type

SHAPE & DIMENSIONS

RECOMMENDED LAND PATTERN

2 0.2

0.7 to 0.9 0.9 to 1.2 0.7 to 0.9

0.2 min.

Electrode material

Internal:Pd

External:Ag/Ni/Sn

Dimensions in mm

JIS 2012 [EIA 0805]

Part No.

Resistance Resistance B constant B constant B constant B constant B constant Permissible Operating

RT

value

tolerance

tolerance operating

temperature table

range

current

[25°C]

(mA)

[25°C]

()

[25/50°C] [25/75°C] [25/85°C] [25/100°C]

(K)

(°C)

NTCG203EH471JT1

NTCG203EH681JT1

NTCG203BH102JT1

NTCG203BH152JT1

NTCG203FH222JT1

NTCG203FH332JT1

NTCG203JH472JT1

NTCG203JH682JT1

NTCG203NH103JT1

NTCG203NH153JT1

NTCG203SH223JT1

NTCG203SH333JT1

NTCG204AH473JT1

NTCG204AH683JT1

NTCG204CH104JT1

NTCG204CH154JT1

470

680

1,000

1,500

2,200

3,300

4,700

6,800

10,000

15,000

22,000

33,000

47,000

68,000

100,000

150,000

+/–5%

3232

3060

3248

3392

3590

3782

3931

4085

3246

3089

3287

3436

3635

3832

3982

4134

3250

3100

3300

3450

3650

3850

4000

4150

3255

3113

3318

3468

3670

3874

4023

4172

+/–3%

2.00

1.70

1.40

1.10

0.95

0.77

0.65

0.54

0.44

0.36

0.30

0.24

0.20

0.17

0.14

0.11

–40 to 125

csv

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

ꢀ

NTCG series RT table

R-T TABLE ACQUISITION PROCEDURE

1. Access the top page of the TDK chip NTC thermistor (protective device)

https://product.tdk.com/info/en/products/protection/temperature/chip-ntc-thermistor/index.html

2. Click [Search by Part No.]

https://product.tdk.com/en/search/protection/temperature/chip-ntc-thermistor/part_no/

3. Enter the product name you want in the RT table in the box and click the Search button.

( Example: NTCG103JF103FT1 )

Wildcard and Multiple Part number.

NTCG103JF103FT1

Question mark (?) and asterisk (*) can be used as wildcard characters.

Search

The question mark (?) matches any single character, and the asterisk (*)

matches any sequence of characters.

Enter only one part number per line. Up to 50 part numbers can be

searched simultaneously.

Enable the real time search

A part number search is normally performed using a prefix search. If you

wish to use a suffix search, enter an exclamation mark (!) at the end of

the Part No.

4. Click the displayed product name.

( Example: NTCG103JF103FT1 )

Catalog /

Data

Sheet

Distributor

Inventory

Apps.

Feature

Brand

Check

Images

Part No.

125°C

UL

TDK

Buy Now

NTCG103JF103FT1

150°C

New

Buy Now

NTCG103JF103FT1S

AEC-Q200

5. Individual pages are displayed and click the RT table in the "Document" on the right side bar.

Documents

Catalog

RoHS Certificate

SVHC/REACH Certificate

Selection Guide

RT Sheet

6. You can download the csv file in the 1°C step of the RT table for the product.

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Attention in the board design

(2) When peak levels panning-at soldering is excessive, by solder

BOARD DESIGN

contraction stress, mechanical-thermal stress causes a Yasuku

chip crack.

When attached to NTC substrate thermistor, amount of silver used

(fillet size) has direct impact on NTC thermistor after mounting.

Thus, sufficient consideration is necessary.

In addition, when the peak level is underestimated, terminal

electrode fixed strength is insufficient. This causes chip dropouts

and may affect circuit reliability.

Set of land dimensions

Representative example of the panning of peak levels is shown in

the following.

(1) As the stress rises in the NTC thermistor owing to the increase

in silver, breakage and cracks will occur. Cause including crack, as

caution on board land design, configure the shape and dimensions

so that the amount of silver is appropriate.

Recommended silver dose

Solder stress is increased,

and it is easy for a crack to

form.

If you installed 2 or more parts in the Common Land, separated by

a solder resist and special land of each component.

Dimensions shape

Solder volume

overload

Most large serving amount

Minimum prime amount

Decent solder

volume

C

Fixed strength is weak, and

there is connection a

problem and risk of loss.

Solder volume

deficit

B

A

Symbol

A

Case and suggested protocol want to avoid

Shape symbol

B

C

Improvement example

(land division)

Example

Cases to avoid

0603

1005

1608

2012

0.25 to 0.35

0.30 to 0.50

0.60 to 0.80

0.90 to 1.20

0.20 to 0.30

0.35 to 0.45

0.60 to 0.80

0.70 to 0.90

0.25 to 0.35

0.40 to 0.60

0.60 to 0.80

0.90 to 1.20

Leads

Solder

Leads

Chip

Solder resist

Lead wire and land

of part discrete

doubles up

PCB

Chassis

Solder

(ground solder)

Solder resist

Arrangements in

the vicinity

L1

L2

L2>L1

Land

Arrangements of

chip component's

companion

Excess solder

Solder resist

Land

Missing solder

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Attention in the board design

Arrangements of components

(2) In payment near by board, depending on mount position of

(1) I was based on camber of substrate and suggested protocol of

NTC thermistor arrangement, as stress does not join to the utmost

is shown in following.

NTC PTC, as mechanical stress varies, please refer to the

following diagram.

Substrate for flexural stress Substrate for flexural stress

E

A

D

Adverse events

Good example

Perforation

C

Perforation or slit

B

Direction of

surface solder

Slit

Solder the mountain fold as a Solder the mountain fold as a

top. bottom.

Perforation or slit

The order of A > B = C > D > E eases the stress.

Chip

arrangements

(direction)

Mounted vertically to the

perforation and slit.

Mounted horizontally to the

perforation and slit.

L1

L2

Distance from

perforation and

slit portion

(L1<L2)

Close location is

disadvantageous of

perforation and slit.

It is an advantage so distant

location away places the

perforation and slit.

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Attention on the mounting

Reflow temperature profile

APPLICATION TO BOARD

Preheating

Soldering

Natural

cooling

Mounting head pressure

Under suction nozzle if dead point too, during implementation,

excessive force joins of NTC thermistor low, as cause causes of

crack, please use with reference to something about following.

1) Being set to top surface of substrate so that under suction nozzle

as for dead center, substrate does not bend back, and adjust,

please.

Peak

T4

T3

T2

t3

t2

2) Nozzle pressure at implementation is 0.1 to 0.3 N in static load,

T1

please.

t1

3) Substrate fixes up back surface of substrate with support pin in

impact of suction nozzle to wely deflection to the utmost, and

substrate hold deflection, please.

t: Time

A representative example is shown in the following.

Specification

for eutectic

mixture solder

160 to 180°C

200°C

Cases to avoid

Recommended case

Item

For lead-free

solder

150 to 180°C

230°C

260°C max.

120s max.

Crack

Preheating temperature

Solder melting temperature

Maximum temperature

Preheating time

Time to reach higher than the

solder melting temperature

Single-sided

mounting

240°C max．

100s max.

Support pin

30s max.

40s max.

2 max.

number of possible reflow cycles 2 max.

Double-sided

mounting

SOLDERING IRON

Solder peeling

Support pin

Crack

(1) The tip temperature and also by (1) types of soldering irons, the

size of the substrate, and the geometry of the land pattern.Being

earlier, but when as there is possibility that crack occurs in the heat

anderson impaction, point soldering iron temperature is high, please

do solder work within the following conditions.

Mechanical shock that, if positioning your nail to wear, ragged edge

of positionings, participates in NTC thermistor are locally, and NTC

thermistor, as there is possibility of crack generated, cut the closed

positioning, and maintenance and inspection, and, exchange of

manage dimensions and position nail periodically, please.

Temperature Wattage Pallet point

Soldering time

of iron tips

shape

Frequency

(Second)

（°C）

（W）

（mm）

Within each

terminal once

(Within total of

twice)

SOLDERING

20max. ø3.0max.

5 max.

350max.

Significant impact is possible on the performance of NTC thermistor,

flux checks something about follow, please use.

(2) Direct iron tip is in contact with the (2) NTC thermistor body, and

the strain owing to thermal shock in particular grows even if a crack

is generated. Therefore, please do not touch it directly to the terminal

electrodes.

(1) Flux uses one with 0.1wt % (Cl conversion) or less halide

substance contains amounts, please. In addition, do not do this with

strongly acidic objects.

(2) Flux during is soldered (2) NTC substrate thermistor is applied

the smalleset amount necessary, please.

(3) If Used soluble flux, perform thorough wash particularly, please.

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm

(18/21)

Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Attention after mounting

(2) During each substrate operational check, push pressure with

contact failure of check pin of boards checkers of check pin may be

toned up to be prevented. As substrate is bent under loading, NTC

thermistor is broken owing to stress. There is also the possibility that

solder on the terminal electrode will peel off. Follow the diagram for

reference, and check that the substrate bends, please.

CLEANING

(1) If cleaning liquid is inappropriate, residues and other foreign

body of fluxes builds up on NTC PTC surface, and can degrade the

performance of NTC thermistor (particularly the insulation

resistance).

(2) Wash conditions may compromise performance of NTC

thermistor if they are improper (wash due, wash excess).

Item

Cases to avoid

Recommended case

Peeling

Support pin

2-1) For wash due

(a)By substance of a system in flux residue halide, metal including

terminal electrodes may experience corrosion.

Substrate sags

Check pin

(b)Substance of a system in flux residue halide builds up on NTC

PTC surface, and reduces the insulation resistance.

(c) Soluble flux makes comparisons of colophony series flux, and

there is event with trends of significant (1) and(2).

SINGLE-PART COMPONENT HANDLING

(1) To drop impact, as there is possibility that breakage and crack is

entered, do not NTC thermistor that(1) NTC thermistor falls.

2-2) For excess wash

(1) Owing to lavage, NTC PTC surface deteriorates, and reduces

performance of NTC thermistor.

(2) In ultrasonography, when output is passed, substrate resonates

size, and crack occurs in body and sprang of NTC thermistor in

vibration of substrate. Since this may reduce the strength of the

terminal electrode, please note the following conditions.

Output Ultrasound output

Crack

Floor

(2) At stacking storage after implementation and treatment of

substrate, corner of boards is regarded as NTC thermistor. Please

be careful, as there is the possibility that breakage and cracks will

occur on impact.

Frequency Ultrasonic frequency

Cleaning time Ultrasound cleaning time

2-3) Concentration including halogen that when cleaning liquid to

pollution, when you released is higher, and may cause similar of

results into wash due.

Crack

Board

SUBSTRATE HANDLING AFTER COMPONENT

MOUNTING

(1) When substrate is divided, a flexible so that show in following

diagram to substrate, and is given by stress including twist, as there

is possibility that crack occurs of NTC thermistor, please check that

stress is within acceptable limits.

Bends

Twist

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Please note that the contents may change without any prior notice due to reasons such as upgrading.

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Packaging style

REEL DIMENSIONS

2.0 0.5

0.8

ø13 0.2

ø21 0.8

9.0max.

14.0max.

ø180 2.0

Dimensions in mm

TAPE DIMENSIONS

1.5₀^+0.1

2.0 0.05

4.0 0.1

T

A

P1

Dimensions in mm

Type

0603

1005

1608

2012

A

B

P1

2 0.05

4.0 0.1

T

0.38 0.05

0.65+0.05/-0.1

1.1 0.2

0.68 0.05

1.15+0.05/-0.1

1.9 0.2

0.45max.

0.65max.

1.1max.

1.6 0.2

2.3 0.2

160min.

Taping

200min.

Drawing direction

Dimensions in mm

Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.

Please note that the contents may change without any prior notice due to reasons such as upgrading.

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Temperature Protection Devices

Product compatible with RoHS directive

Compatible with lead-free solders

NTC thermistors

Commercial grade

Description and definition of terms

INITIAL RESISTANCE

Thermistor resistance is a function of absolute temperature as indicated by the following relationship:

1

T

1

T⁰

............................................................ (1)

–

R=R0 • expB

(

)

Here R⁰, R(k) are the respective resistance values when the surrounding temperature is T0, T(K). B is the thermistor constant(B con-

stant below).

B CONSTANT

The B constant is found from the following equation:

2.3026(logR–logR0)

B=

....................................................... (2)

1

T

1

T⁰

–

This B characteristic is indicated by the slope of the linear plot of log R-1/T inverse absolute temperature.

The B constant value is generally in the vicinity of 2500K to 5000K. B constant values of 3000K to 4000K are frequently used for measure-

ments.

Resistance-temperature characteristics (Fig.1)

(

)

Temperature ˚C

450 400 350 300 250 200 150

100

10

1

20kΩ/200˚C

3.3kΩ/100˚C

1.4

1.6

1.8

2

1

T

2.2

(

2.4

2.6

2.8

3

×10³

K

)

TEMPERATURE COEFFICIENT

The relationship between temperature coefficient



and B becomes:

B

T²

1

R

dR

dT

............................................. (3)

=

•

= –

100(%/°C)

The negative sign of the temperature coefficient indicates that the temperature coefficient decreases as both thermistor resistance and

temperature rise. If B is taken as 3400K, the temperature coefficient found at 20°C (293.15K) becomes –4%/°C.

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Temperature Protection Devices

HEAT DISSIPATION COEFFICIENT

Temperature rises due to thermal energy formed as electrical current flows through the thermistor. The thermistor temperature T0 is then

related to the surrounding temperature Ta and the electrical input W:

W=k(T⁰–Ta)=V•I(mW) ............................................................ (4)

W

.............................................................. (5)

(mW/°C)

k=

T⁰–Ta

This k value is the heat dissipation coefficient, which represents the additional electrical power (mW/°C) needed to raise the thermistor

temperature by 1°C. This heat dissipation coefficient varies with changes in the measurement and environmental conditions. When a

thermistor is used for temperature measurement, it is naturally important to lower the applied electrical current as much as possible in

order to reduce measurement error resulting from self heating.

VOLTAGE - CURRENT CHARACTERISTIC

The voltage - current characteristic indicates the drop in voltage as electrical current through the thermistor is gradually increased.

Voltage-current characteristics (Fig.2)

100

5

4

10

3

2

1

(

)

Ta=25˚C in still air

No.1 5kΩ

2

3

4

5

10kΩ

20kΩ

50kΩ

100kΩ

0.1

1

10

100

(

)

Current mA

HEATING TIME CONSTANT

The time period required to heat up a thermistor from a certain temperature T0 over a target temperature rise is called the heating time

constant. Various types of heating time constants are indicated by the symbols shown in Table 1 as determined by the percent change

from T⁰toward the target temperature. The standard change is typically taken to be 63.2%.

Thermal time constants (Fig.3)

70

T

0

60

50

40

30

20

10

0

Heating

Table 1 Heating time constant and temperature change ratio

Code



2

3

4

5

6

7

Rate of change (%) for T⁰-Ta

Th

Tc

63.2

86.5

95.0

98.2

99.4

99.8

99.9

Room temperature Ta

Cooling

τ

2τ

3τ

4τ

5τ

6τ

7τ

PERMISSIBLE OPERATING CURRENT

This is the maximum load current limit below 1°C temperature rise due to thermistor self-heating.

It's possible to express it in the following system.

Maximum allowed current [mA] ＝ √（Heat dissipation constant[mW/°C] ÷ Resistance[] )

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20171213 / tpd_commercial_ntc-thermistor_ntcg_en.fm


型号：	NTCG103EH101HT1
厂家：	TDK ELECTRONICS
描述：	NTC Thermistor, 100ohm, Surface Mount, ROHS COMPLIANT 温度传感电阻器
文件：	总21页 (文件大小：646K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

NTCG103EH101HT1 [TDK]

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