General Purpose Thick Film
Chip Resistor
Organic
Protection
WCR Series
•
•
•
•
•
Tolerances to ±1%
TCR down to ±100ppm/°C
Zero ohm jumpers available
Wide ohmic range from 1Ω to 10MΩ
Now supplied with RoHS compliant terminations
Wrap-
around
termination
Glass
Passivation
Nickel
Barrier
Thick Film
Element
Electrical Data
IRC
Type
TCR
(ppm/°C)
±300
±200
±400
WCR0402
±200
±100
±400
WCR0603
±200
±100
±400
WCR0805
±200
±100
±400
WCR1206
±200
±100
±400
WCR1210
±200
±100
±400
WCR2010
±200
±100
±400
WCR2512
±200
±100
Ohmic Range (Ω)
±5%
10R - 91R
100R - 10M
1R0 - 10R
11R - 10M
N/A
1R0 - 10R
11R - 10M
N/A
1R0 - 10R
11R - 10M
N/A
1R0 - 10R
11R - 10M
N/A
1R0 - 10R
11R - 10M
N/A
1R0 - 10R
11R - 10M
N/A
1R0 - 10R
11R - 10M
N/A
±1%
10R - 97R6
100R - 1M
1R0 - 10R
11R - 100R
101R - 1M0
1R0 - 10R
11R - 100R
101R - 1M0
1R0 - 10R
11R - 100R
101R - 1M0
1R0 - 10R
11R - 100R
101R - 1M0
1R0 - 10R
11R - 100R
101R - 1M0
1R0 - 10R
11R - 100R
101R - 1M0
1R0 - 10R
11R - 100R
101R - 1M0
1000
200
400
500
200
400
250
200
400
250
200
400
-55 to +155
125
150
200
100
50
100
63
50
100
Rated Power
@ 70°C
(milliwatts)
50
Maximum
Working
Voltage
(V)
25
Maximum
Overload
Voltage
(V)
50
Operating
Temperature
Range
(°C)
WCR0201
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
WCR Series Issue December 2008 Sheet 1 of 3
General Purpose Thick Film
Chip Resistor
Environmental Data
Test Conditions
Short Time Overload
Temperature Cycling
Test Method
5 seconds
2.5 X Rated Power
5 Cycles
-55°C to +125°C
240 Hours
40°C ±2°
90-95% RH
1000 Hours
70°C ±3°
1.5 hours on
30 minutes off
1000 Hours
-55°C ±3°
10 ±1 Seconds
260°C ±5°
3 ±0.5 Seconds
235°C ±5°
Max Change (5%)
±2.0% +0.1Ω
±1.0% +0.1Ω
Max Change (1%)
±1.0% +0.1Ω
±0.5% +0.1Ω
Humidity
±3.0% +0.1Ω
±1.0% +0.1Ω
Load Life
±3.0% +0.1Ω
±1.0% +0.1Ω
Low Temperature Exposure
Effects of Solder Heat
Solderability
±1.0% +0.1Ω
±1.0% +0.1Ω
95% Min Coverage
±1.0% +0.1Ω
±1.0% +0.1Ω
95% Min Coverage
Physical Data (inches)
L
a
TOP
W
BO TT OM
SIDE
b
H
Model
WCR0201
WCR0402
WCR0603
WCR0805
WCR1206
WCR1210
WCR2010
WCR2512
L
0.024±0.002
0.039±0.004
0.063±0.004
0.079±0.006
0.125±0.006
0.126±0.004
0.197±0.004
0.248±0.004
W
0.012±0.002
0.020±0.002
0.032±0.006
0.049±0.006
0.061±0.006
0.102±0.006
0.098±0.006
0.126±0.006
H
0.009±0.002
0.014±0.002
0.020±0.004
0.020±0.004
0.024±0.004
0.024±0.004
0.024±0.004
0.024±0.004
a
0.005±0.002
0.008±0.004
0.012±0.008
0.016±0.008
0.018±0.008
0.020±0.010
0.023±0.010
0.023±0.010
b
0.006±0.002
0.010±0.004
0.012±0.008
0.012±0.008
0.018±0.008
0.020±0.008
0.020±0.008
0.020±0.008
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
WCR Series Issue December 2008 Sheet 2 of 3
General Purpose Thick Film
Chip Resistor
Power Derating Chart
100
% Of Rated P ower
50
10
25°
70°
155°
Temperature in °C
Packaging Reel Physical Data
Size
0201
0402
A
Tape
Paper
Paper
Paper
Paper
Paper
Paper
Paper
Plastic
Qty
15K
15K
5K
5K
5K
5K
4K
4K
A
(mm)
2.0±0.5
2.0±0.5
2.0±0.5
2.0±0.5
2.0±0.5
2.0±0.5
2.0±0.5
2.0±0.5
B
(mm)
C
(mm)
W
(mm)
10.0±1
10.0±1
10.0±1
10.0±1
10.0±1
10.0±1
13.8±1
13.8±1
13.0±0.5 21.0±0.5
13.0±0.5 21.0±0.5
13.0±0.5 21.0±0.5
13.0±0.5 21.0±0.5
13.0±0.5 21.0±0.5
13.0±0.5 21.0±0.5
13.0±0.5 21.0±0.5
13.0±0.5 21.0±0.5
0603
B
60mm ±1
0805
1206
C
1210
ø178mm ±2
2010
W
2512
Ordering Data
Sample Part Number
Model
WCR - WCR1206LF - 1001 - F - P - LT
WCR00201LF, WCR0402LF, WCR0603LF, WCR0805LF
WCR1206LF, WCR1210LF, WCR2010LF, WCR2512LF
Resistance
3-digit resistance code for tolerances G and J.
4-digit resistance code for tolerances F and D.
Tolerance
J = ±5%; G = ±2%, F = ±1%
Tape Type
P = Paper, E = Plastic
Tape & Reel Packaging
For additional information or to discuss your specific requirements,
please contact our Applications Team using the contact details below.
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
WCR Series Issue December 2008 Sheet 3 of 3
Test/Measurement
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