WR02W4R7_PTL [WALSIN]
Thick Film General purpose chip resistors;型号: | WR02W4R7_PTL |
厂家: | Walsin Technology |
描述: | Thick Film General purpose chip resistors |
文件: | 总7页 (文件大小:230K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Approval sheet
WR02X(W)
±5%, ±1%
Thick Film General purpose chip resistors
Size 0201
*Contents in this sheet are subject to change without prior notice.
Page 1 of 7
ASC_WR02X_V18
MAY - 2016
Approval sheet
FEATURE
1. Small size and light weight
2. High reliability and stability
3. Reduced size of final equipment
4. Suitable for high density print circuit board assembly
5. Higher component and equipment reliability
6. Lead free product
APPLICATION
•
•
•
•
•
Mobile phone
PDA
Camcorders
Palmtop computers
Hybrid module
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 pure Tin.
Fig 1. Construction of Chip-R WR02X
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ASC_WR02X_V18
MAY - 2016
Approval sheet
QUICK REFERENCE DATA
Item
Series No.
General Specification
WR02X(W)
Size code
0201(0603)
Resistance Range
1Ω~10MΩ ( ±5% tolerance ), Jumper
1Ω~ 10MΩ ( ±1% tolerance )
Resistance Tolerance
±1%
±5%
E24
E96/E24
TCR (ppm/°C)
10Ω - 10MΩ, ≤±200
1 - 9.76Ω, +600~-200
Max. dissipation @ Tamb=70°C
Max. Operation Voltage (DC or RMS)
Max. Overload Voltage (DC or RMS)
Operation temperature
1/20 W
25V
50V
-55 ~ +125’C
Note :
1.
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
2.
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
or Max. RCWV listed above, whichever is lower.
RCWV = RatedPower×ResistanceValue
DIMENSION(unit : mm)
Protective coat
WR02X(W)
0.60 ± 0.03
0.30 ± 0.03
0.23 ± 0.03
0.15 ± 0.05
0.10 ± 0.05
T
L
W
T
End termination
Tb
Resistive layer
Tt
Ceramic Substrate
Tb
Tt
W
L
MARKING
WR02X(W) has no marking.
Page 3 of 7
ASC_WR02X_V18
MAY - 2016
Approval sheet
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E24/E96 series for resistors with a tolerance of ±5%
& ±1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”
Derating
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
Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by
automatic placement systems.
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.
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 for Chip Resistors WR02X(W)
Page 4 of 7
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MAY - 2016
Approval sheet
CATALOGUE NUMBERS
The resistors have a catalogue number starting with :
WR02
Size code
X
472_
J
A
L
Type code
Resistance code
Tolerance
J : ±5%
Packaging code
Termination code
WR02 : 0201
X : Normal
5%, E24: 2 significant digits
followed by no. of
A
: 7” Reeled taping
(15Kpcs/Reel)
L
= Sn base (lead
free)
W : 1% For <10Ω and
>1MΩ
F : ±1%
zeros and a blank
T
: 7” Reeled taping
(10Kpcs/Reel)
P : Jumper
4.7Ω = 4R7_
100Ω = 101_
10KΩ = 103_
D
: 7” Reeled taping
(20Kpcs/Reel)
H : 13” Reeled taping
(50Kpcs/Reel)
1%, E24+E96: 3 significant
digits followed by no.
of zeros
G
: 13” Reeled taping
100Ω
=1000
=3742
(70Kpcs/Reel)
37.4KΩ
TEST CONDITION FOR JUMPER (0 Ω)
Item
WR02
1/20W
Power Rating At 70°C
Resistance
MAX.50mΩ
1A
Rated Current
Peak Current within 5 sec
Operating Temperature
2.5A
-55 ~ +125°C
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Approval sheet
TEST AND REQUIREMENTS (JIS C 5201-1 : 1998)
REQUIREMENT
Resistor
TEST
PROCEDURE / TEST METHOD
0Ω
Within the specified tolerance
Refer to “QUICK
Electrical Characteristics
-
-
DC resistance values measurement
Temperature Coefficient of Resistance (T.C.R)
REFERENCE DATA”
Natural resistance change per change in degree
centigrade.
JISC5201-1: 1998
Clause 4.8
<50mΩ
R2 − R
×106 (ppm/°C) t1 : 20°C+5°C-1°C
1
R
(
t2 − t1
)
1
R1 : Resistance at reference temperature (20°C+5°C/-
1°C)
R2 : Resistance at test temperature (-55°C or +125°C)
Short time overload
(S.T.O.L)
Permanent resistance change after
a
5second
application of a voltage 2.5 times RCWV or the maximum
overload voltage specified in the above list, whichever is
less.
∆R/R max. ±(2%+0.10Ω)
<50mΩ
<50mΩ
Clause 4.13
Un-mounted chips completely immersed for 10±1second
in a SAC solder bath at 260℃±5ºC
Resistance to soldering
heat(R.S.H)
ΔR/R max. ±(1%+0.05Ω)
no visible damage
Clause 4.18
Solderability
Clause 4.17
95% coverage min., good tinning and no
visible damage
Un-mounted chips completely immersed for 2±0.8second
in a SAC solder bath at 235℃±5℃
30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C-1°C,
30 minutes at +125°C±3°C, 2~3 minutes at 20°C+5°C-
1°C, total 5 continuous cycles
Temperature cycling
∆R/R max. ±(1%+0.05Ω)
< 50mΩ
< 50mΩ
Clause 4.19
1000 +48/-0 hours, loaded with RCWV or Vmax in
humidity chamber controller at 40°C±2°C and 90~95%
relative humidity, 1.5hours on and 0.5 hours off
10Ω≤R<1MΩ :
Damp Heat
∆R/R max. ±(3%+0.10Ω)
R<10Ω, R≥1MΩ :
(Load life in humidity)
Clause 4.24
∆R/R max. ±(5%+0.10Ω)
1000+48/-0 hours; loaded with RCWV or Vmax in chamber
Load Life (Endurance)
Ditto.
controller 70±2ºC, 1.5 hours on and 0.5 hours off
Clause 4.25
Resistors mounted on a 90mm glass epoxy resin No visual damaged,
Bending strength
< 50mΩ
PCB(FR4), bending once 5mm for 10sec.
∆R/R max. ±(1%+0.05Ω)
Clause 4.33
No remarkable damage or removal of the
terminations
Adhesion
Pressurizing force: 3N, Test time: 10±1sec.
Clause 4.32
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MAY - 2016
Approval sheet
PACKAGING
Paper Tape specifications (unit :mm)
Series No.
WR02X
A
B
W
F
E
0.67±0.05
0.37±0.05
8.00±0.20
3.50±0.05
1.75±0.10
Series No.
WR02X
P1
P0
T
ΦD
+0.1
2.00±0.05
4.00±0.05
0.45±0.05
Φ1.50
−0.0
Reel dimensions
Symbol
A
B
C
D
7” Reel
10” Reel
13” Reel
13.0±0.2
13.0±0.2
13.0±0.2
9.0±0.5
9.0±0.5
9.0±0.5
Φ178.0±0.2
Φ254.0±2.0
Φ330.0±2.0
Φ60.0±1.0
Φ100.0±1.0
Φ100.0±1.0
Taping quantity and Tape material
-
-
Chip resistors 10,000 / 15,000 / 20,000 pcs 7” Reel, Paper tape.
Chip resistors 50,000 / 70,000 pcs 13” Reel, Paper tape.
Page 7 of 7
ASC_WR02X_V18
MAY - 2016
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