WK25V103FTL [WALSIN]

Special material and design for high working voltage require;


型号：	WK25V103FTL
厂家：	Walsin Technology
描述：	Special material and design for high working voltage require
文件：	总8页 (文件大小：225K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Approval sheet

WK25V, WK20V, WK12V, WK08V, WK06V

±5%, ±2%, ±1%, ±0.5%

Thick Film High Voltage Chip Resistors

Size 2512, 2010,1206, 0805, 0603

*Contents in this sheet are subject to change without prior notice.

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Approval sheet

FEATURE

1. Special material and design for high working voltage require.

2. Compatible with flow and reflow soldering

3. Suitable for lead free soldering.

4. High limiting voltage

APPLICATION

•

Power supply

Automotive industry

Measurement instrument

Back light inverter

•

Medical or Military equipment

DESCRIPTION

The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are

added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The

composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to

nominated value within tolerance which controlled by laser trimming of this resistive layer.

The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For

ease of soldering the outer layer of these end terminations is a Tin (lead free) alloy.

Fig 1. Construction of Chip-R

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Approval sheet

QUICK REFERENCE DATA

Item

General Specification

WK12V

Series No.

WK25V

2512(6432 )

WK 20V

WK08V

WK06V

Size code

2010 ( 5025 )

1206 ( 3216 )

0805 ( 2012 )

0603 (1608)

Resistance Tolerance

Resistance Range

±0.5%, ±1%, ±2%, ±5%,

±5%: 47Ω ~ 51MΩ

47Ω ~10MΩ

±1%, ±2%: 47Ω ~ 20MΩ

±0.5%: 47Ω ~ 10MΩ

±0.5%, ±1%, ±2%: 47Ω ~ 10MΩ

TCR (ppm/°C)

+500~ -200

±200

47Ω ~ 97.6Ω

100Ω ~ 549Ω

560Ω ~ 51MΩ

47Ω ~ 464Ω

470Ω ~ 51MΩ

47Ω ~ 97.6Ω

100Ω ~ 51MΩ

47Ω ~ 97.6Ω

100Ω ~ 51MΩ

47Ω ~ 464Ω

470Ω ~ 10MΩ

±100

Max. Dissipation at

T_amb=70°C

1 W

800V

1600V

1/2 W

500V

1/4 W

500V

1/8 W

400V

800V

1/10W

200V

400V

Max. Operation Voltage

(DC or RMS)

Max. Overload Voltage

(DC or RMS)

1000V

Climatic category (IEC

60068)

55/155/56

Note:

This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication

60115-8”

Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by

RCWV = RatedPower ×Resistance Value or Max. RCWV listed above, whichever is lower.

MECHANICAL DATA (unit : mm)

1 0 5

WK25V

WK20V

WK12V

WK08V

WK06V

Symbol

6.30 ± 0.15

3.20 ± 0.15

0.550 ± 0.15

0.60 ± 0.20

5.00 ± 0.15

2.50 ± 0.150

0.55 ± 0.15

0.60 ± 0.20

3.20 ± 0.15

1.60 ± 0.15

0.55 ± 0.10

0.50 ± 0.25

2.00 ± 0.10

1.25 ± 0.10

0.55 ± 0.10

0.40 ± 0.20

1.60 ± 0.10

0.80 +0.15/-0.05

0.45 ± 0.10

0.30 ± 0.10

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MARKING

For 5%, 1% E24 series, each resistor is marked with a three–digit code on the protective coating to designate

the nominal resistance value.

For 1% E96 series, each resistor is marked with a four–digit code on the protective coating to designate the

nominal resistance value.

For 1% E24/E96 overlapped values, each resistor is marked with three-digit code.

WK06V E96 has no marking!

Example:

105 = 1MΩ 1% , 5%, E24/E96

49R9 = 49.9Ω 1%, E96

123 = 12KΩ 1%, 5%, E24

FUNCTIONAL DESCRIPTION

Product characterization

Standard values of nominal resistance are taken from the E24/E96 series for resistors with a tolerance of

±1%, ±5%. The values of the E24/E96 series are in accordance with “IEC publication 60063”.

Derating curve

The power that the resistor can dissipate depends on the operating temperature; see Fig.2

Figure 2

Maximum dissipation in percentage of rated power as a function of the

ambient temperature

MOUNTING

Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).

Electrical connection to the circuit is by individual soldering condition.

The end terminations guarantee a reliable contact.

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SOLDERING CONDITION

The robust construction of chip resistors allows them to be

completely immersed in a solder bath of 260°C for 10

seconds. Therefore, it is possible to mount Surface Mount

Resistors on one side of a PCB and other discrete

components on the reverse (mixed PCBs).

Surface Mount Resistors are tested for solderability at

235°C during 2 seconds. The test condition for no leaching

is 260°C for 30 seconds. Typical examples of soldering

processes that provide reliable joints without any damage

are given in Fig 3.

Fig 3. Infrared soldering profile

CATALOGUE NUMBERS

The resistors have a catalogue number starting with .

WK25

Size code

105

Type code

Resistance code

Tolerance

J : ±5%

G : ±2%

F : ±1%

D : ±0.5%

Packaging code

Termination code

WK25 : 2512

WK20 : 2010

WK12 : 1206

WK08 : 0805

WK06 : 0603

V :High Voltage

5%, E24: 2 significant digits

followed by no. of zeros

T : 7” inch reel

= Sn base (lead

free)

1206:paper tape, 5kpcs/reel

100Ω = 101_

10KΩ = 103

2010,2512 :plastic tape,

4kpcs/reel

1%, E24+E96: 3 significant

digits followed by no. of

zeros

100Ω

=1000

=3742

37.4KΩ

Tape packaging WK12, WK08, WK06 : 8mm width paper taping 5,000pcs per reel.

WK25；WK20: 12mm width plastic taping 4,000pcs per reel.

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TEST AND REQUIREMENTS(JIS C 5201-1 : 1998)

Essentially all tests are carried out according to the schedule of IEC publication 115-8, category

LCT/UCT/56(rated temperature range : Lower Category Temperature, Upper Category Temperature; damp

heat, long term, 56 days). The testing also meets the requirements specified by EIA, EIAJ and JIS.

The tests are carried out in accordance with IEC publication 68, “Recommended basic climatic and mechanical

robustness testing procedure for electronic components” and under standard atmospheric conditions according

to IEC 60068-1, subclause 5.3. Unless otherwise specified, the following value supplied :

Temperature: 15°C to 35°C.

Relative humidity: 45% to 75%.

Air pressure: 86kPa to 106 kPa (860 mbar to 1060 mbar).

All soldering tests are performed with midly activated flux.

TEST

PROCEDURE

REQUIREMENT

Temperature Coefficient

of Resistance(T.C.R)

Natural resistance change per change in degree centigrade. Refer to

“QUICK REFERENCE DATA”

R₂− R

×10⁶(ppm/°C)

Clause 4.8

(

t₂− t₁

)

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

t₁: 20°C+5°C-1°C

Short time overload

(S.T.O.L)

Permanent resistance change after a 2 second application of No visible damage

a voltage 2.5 times RCWV or the maximum overload voltage

specified in the above list, whichever is less.

∆R/R max. ±(1%+0.05Ω)

Clause 4.13

Un-mounted chips completely immersed for 10±1second in a

SAC solder bath at 260℃±5ºC

no visible damage

Resistance to soldering

heat(R.S.H)

∆R/R max. ±(1%+0.05Ω)

Clause 4.18

Solderability

Clause 4.17

Un-mounted chips completely immersed for 2±0.5second in

a SAC solder bath at 235℃±5℃

good tinning (>95% covered)

no visible damage

Temperature cycling

30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C-1°C, 30

minutes at +155°C±3°C, 2~3 minutes at 20°C+5°C-1°C, total

5 continuous cycles

no visible damage

Clause 4.19

∆R/R max. ±(1%+0.05Ω)

Load life (endurance)

1000 +48/-0 hours, loaded with RCWV or Vmax in chamber no visible damage

controller 70±2ºC, 1.5 hours on and 0.5 hours off

Clause 4.25

∆R/R max. ±(5%+0.1Ω)

Load life in Humidity

1000 +48/-0 hours, loaded with RCWV or Vmax in humidity no visible damage

chamber controller at 40°C±2°C and 95% relative humidity,

1.5hours on and 0.5 hours off

Clause 4.24

∆R/R max. ±(5%+0.1Ω)

Endurance at high

temperature

no visible damage

155°C, no load, 1000hours

∆R/R max. ±(5%+0.1Ω)

Clause 4.25.3

Bending strength

Clause 4.33

∆R/R max. ±(1%+0.05Ω)

Resistors mounted on a 90mm glass epoxy resin

PCB(FR4),

2512, 2010 bending : 1 mm once for 10 seconds

1206, 0805, 0603 bending: 3mm once for 10 seconds

Pressurizing force: 5N, Test time: 10±1sec.

Adhesion

No remarkable damage or

removal of the terminations

Clause 4.32

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TEST

PROCEDURE

REQUIREMENT

R≧1GΩ

Insulation Resistance

Apply the maximum overload voltage (DC) for 1minute

Clause 4.6

Dielectric Withstand

Apply the maximum overload voltage (AC) for 1 minute

No breakdown or flashover

Voltage

Clause 4.7

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PACKAGING

Tape specifications (unit :mm)

Series No.

WK25V

6.90±0.20

3.60±0.20

12.00±0.30

5.50±0.10

1.75±0.10

5.50±0.20

3.60±0.20

2.50±0.20

1.90±0.20

3.10±0.20

2.00±0.15

1.65±0.15

1.15±0.15

WK20V

WK12V

WK08V

8.00±0.30

ΦD

3.50±0.20

1.75±0.10

WK06V

Series No.

WK25V

1.1±0.15

WK20V

+0.1

−0.0

4.00±0.10

WK12V

Φ1.50

Max. 1.0

Max. 0.8

WK08V

WK06V

Reel dimensions

(unit : mm)

Reel / Tape

7” reel for 12mm tape

13+1/0

13.0±0.2

Φ180.0+0/-1.5

Φ60.0+1/0

7” reel for 8mm tape

9+1/0

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