High Power Chip Resistors
Model No.
Size Code
Inch
Size Code
mm
WCR32
WCR50
1206
3216
2010
5025
Features
Wide terminal made higher reliability of solder joint, compared to conventional chip resistor.
Wide terminal made possible high power handling. (Rated power, WCR50 : 1W, WCR32 : 0.5W)
High joint strengh against heat shock.
Resistance ranging 10m
1M .
Applications
Automotive electronics such as E.C.U. ,etc.
Circuits requiring high resistance to vibration.
For current detection.
Constructions
Symbol
Material List
Alumina Substrate
Electrode
Resistive Film
Over coat
Marking
Model Designation
WCR32
Model No.
Model No.
WCR32
WCR50
100
Resistance
Resistance
3 or 4 digit
(Resistance) (Marking)
J
Tolerance
Tolerance
Symbol
F
J
0
5
type is no marking
Tolerance(%)
V
Packaging
Symbol
B
V
E
Packaging
Packaging
Bulk
Paper taping(WCR32)
Embossed taping(WCR50)
0
47
1k
1.02 k
000
4 70
102
1021
Rating
Model No.
Rated Wattage
W
Tolerance
%)
Resistance Range
E-24,E-96 Series
Standard
T.C.R.
ppm/ )
Max.Working
Voltage (V)
Max. Overload
Voltage (V)
J(
WCR32
0.50
F(
J(
J(
WCR50
1.00
F(
J(
5%)
1%)
5%)
5%)
1%)
5%)
10m
0.1
10m
0.1
91m
1M
91m
200
1M
200
400
200
200
400
0
type
Operating Temp. Range: -55
Rated Current
(A)
2.0
Resistance
+155
Model No.
WCR32
WCR50
Max. 50m
HOKURIKU
Specifications are subject to change without notice.
High Power Chip Resistors
Dimensions
L
c
W
t
d
Model No.
W
CR32
W
CR50
3.20
L
0.15
0.20
W
1.60
2.50
0.15
0.20
0.30
0.50
c
0.20
0.20
0.50
0.60
d
0.20
0.20
mm)
t
0.55
0.15/-0.05
0.56
0.15
5.00
Power rating (%)
Power rating
For resistors operated in ambient temperature
abobe 70 , power rating must be derated
in accordance with the derating curve.
100
80
60
40
20
0
-55
0
70
155
Ambient Temperature (
)
Surface temperature
Surface temperature rise is shown in this figure.
Condition: : Measured by soldering on glass
cloth base material epoxy resin (t=1.6mm).
Surface temperature ( )
WCR50
150
WCR32
100
50
0
50
100
200
300
Power rating (%)
Packaging
Refer "Dimension, Packaging, etc."
HOKURIKU
Specifications are subject to change without notice.
2
PCB设计
