General Purpose Surface
Mounted Resistors
WCR Series
Features
Excellent reliability
Wide range of sizes and ohmic values
ꢀ Wrapꢀaroundꢀterminaꢁons
ꢀ Innerꢀelectrodeꢀprotecꢁon
AEC-Q200 grade available
AllꢀpartsꢀareꢀPb-freeꢀandꢀcomplyꢀwithꢀEUꢀDirecꢁveꢀ2011/65/EUꢀamendedꢀbyꢀ(EU)ꢀ2015/863ꢀ(RoHS3)
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
Resistance Range AEC-Q200
10R to 1M0
ohms
25
200
50
75
150
100
200
2
Limiting element votage
TCR*
Resistance Tolerance
Standard values
Ambient temperature range
Zero-ohm Jumper Chip Rating
volts
ppm/°C
%
200
1
E24 or E96
-55 to 155
1.5
°C
amps
0.5
1
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/ºC
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
1.6 ± 0.1
2.0 ± 0.15
3.1 ± 0.15
3.1 ± 0.1
5.0 ± 0.1
6.35 ± 0.1
0.23 ± 0.03
0.35 ± 0.05
0.45 ± 0.1
0.55 ± 0.1
0.55 ± 0.1
0.55 ± 0.1
0.55 ± 0.1
0.55 ± 0.1
0.1 ± 0.05
0.2 ± 0.1
0.15 ± 0.05
0.25 ± 0.1
0.3 ± 0.2
0.4 ± 0.2
0.45 ± 0.2
0.5 ± 0.2
0.5 ± 0.2
0.5 ± 0.2
0.3 ± 0.03
0.5 ± 0.05
0.8 ± 0.1
T
0.3 ± 0.2
A
0.4 ± 0.2
1.25 + 0.15 -0.1
1.55 + 0.15 -0.1
2.6 ± 0.2
0.45 ± 0.2
0.5 ± 0.25
0.60 ± 0.25
0.60 ± 0.25
L
W
A
Wrap-around terminations
(3 faces)
2.5 ± 0.2
3.2 ± 0.2
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
BIꢀTechnologiesꢀꢀꢀꢀIRCꢀꢀꢀꢀWelwyn
TTꢀElectronicsꢀreservesꢀtheꢀrightꢀtoꢀmakeꢀchangesꢀinꢀproductꢀspecificaꢁonꢀwithoutꢀnoꢁceꢀorꢀliability.
AllꢀinformaꢁonꢀisꢀsubjectꢀtoꢀTTꢀElectronics’ꢀownꢀdataꢀandꢀisꢀconsideredꢀaccurateꢀatꢀꢁmeꢀofꢀgoingꢀtoꢀprint.
www.ꢂelectronics.com/resistors
© TT Electronics plc
04.23