General Purpose Surface
Mounted Resistors
WCR Series
·
·
·
·
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Excellent reliability
Wide range of sizes and ohmic values
Wrap around terminations
Inner electrode protection
AEC-Q200 grade available
Electrical Data
0201
0402
0603
0805
1206
1210
2010
2512
0.05
0.063
0.1
0.125
0.25
1R0 to 10M
0.25
0.5
1.0
Power rating @ 70°C
Resistance range
watts
ohms 10R to 1M0 1R0 to 1M0
Limiting element votage
TCR*
Resistance Tolerance
Standard values
volts
ppm/°C
%
25
250
50
150
100
200
200
1
E24 or E96
-55 to 155
Ambient temperature range
Zero-ohm Jumper Chip Rating
°C
amps
0.5
1
1.5
2
Zero-ohm Jumper Chip Resistance milliohms
<50
* Notes – TCR for low values 1R to 10R: -400 to +600ppm/ºC, 11R to 100R: ±±00ppm/ºC
TCR for high values 3M3 to 10M: ±300ppm/º
Physical Data
Dimensions (mm)
L
T
C
A
W
Style
0201
0402
0603
0805
1206
1210
2010
2512
C
0.6 ± 0.03
1.0 ± 0.1
0.23 ± 0.03
0.35 ± 0.05
0.5 ± 0.15
0.12 ± 0.05
0.2 ± 0.1
0.25 ± 0.2
0.4 ± 0.2
0.15 ± 0.05
0.25 ± 0.1
0.25 ± 0.2
0.4 ± 0.2
0.3 ± 0.03
0.5 ± 0.05
0.8 ± 0.15
1.25+ 0.2 -0.1
1.6 + 0.1 -0.15
2.6 ± 0.15
2.5 ± 0.15
3.2 ± 0.15
T
1.6 ± 0.15
2.0 ± 0.2
A
0.5 + 0.15 -0.10
3.2 +0.1 -0.25
3.2 + 0.1 -0.2
5.0 ± 0.15
6.3 ± 0.15
0.55 +0.15 -0.1 0.5 + 0.2-0.25 0.5+ 0.2 -0.25
L
W
A
0.55 +0.15 -0.1
0.56 ± 0.15
0.5 ± 0.25
0.60 ± 0.25
0.60 ± 0.25
0.5 ± 0.2
0.60 ± 0.25
1.2 ± 0.85
Wrap-around terminations
(3 faces)
0.56 ± 0.15
Figure 1
Construction
Tin Plating
The chips have a high alumina substrate (96% minimum) with
Nickel Barrier
a ruthenium oxide resistance element and silver palladium,
Dipped Conductor
coat
nickel and tin plated terminations. A glazed protection
is applied to the resistive element (See Fig.1)
Epoxy Melamine
Protection
Glass Dielectric
Resistance Element
Terminations
Solderability
Silver
Palladium
The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2.
Strength
The terminations meet requirements of
IEC 68.2.21.
96% min Alumina Substrate
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
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07.13
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