■ Features
■ Applications
■ Model Designation
■ Rating
High Power Low Resistance Chip Resistors
1
HOKURIKU Specifications are subject to change without notice .
・High power type, milliohm resistor product. Low resistance range covers from 10mΩ.
・Wide terminal made higher reliability of solder joint, compared to conventional chip resistor.
・Wide terminal made possible high power handling. (Rated power, WLCR64: 2W, WLCR50: 1W, WLCR32: 0.5W)
・High joint-strength against heat shock.
・Automotive electronics such as E.C.U., etc.
・Circuits requiring high resistance to vibration
・For current detection
WLCR32 R10 J V
①Model No. ②Resistance ③Tolerance ④Packaging
Model No. Rated Wattage Tolerance Resistance T.C.R. Max. Working Max. Overload
(W) (%) (mΩ)(ppm/
℃) Voltage (V) Voltage (V)
10～33 ±500
36～91 ±350
100～910 ±200
F: ±1% 100～976 ±200
10～33 ±500
36～91 ±350
100～910 ±200
F: ±1% 100～976 ±200
10～33 ±500
36～91 ±350
100～910 ±200
F: ±1% 100～976 ±200
Operating Temperature Range : -55℃～＋155℃
400WLCR64 2.0 J: ±5% 200
400
WLCR50 1.0 J: ±5% 200 400
WLCR32 0.5 J: ±5% 200
①Model No.
WLCR32 Symbol Tolerance(%) Symbol Packaging
WLCR50 F ± 1.0 B Bulk
WLCR64 J ± 5.0 V Paper taping (WLCR32)
10mΩ→R010
470mΩ→R47
102mΩ→R102
③Tolerance ④Pckging
3 or 4 digit
②Resistance
Embossed taping
(WLCR50,WLCR64)
(Example) E
(Less than 100mΩ: all 4 digit
Model No. WLCR32 WLCR50 WLCR64
Size Code
INCH 1206 2010 2512
Size Code
mm 3216 5025 6432
■ Dimensions
■ Structure
■ Surface Temperature
For resistors operated in ambient temperature above70 ℃,
power rating must be derated in accordance with the
derating curve.
■ Surface Temperature
Surface temperature rise is shown in this figure.
Condition : Measured by soldering on glass
cloth base material epoxy resin (t=1.6mm).
■ Packaging
Refer "Dimension, Packaging, etc."
2
HOKURIKU Specifications are subject to change without notice
High Power Low Resistance Chip Resistors
L
c
d
W
t
Model No. L W c d t
WLCR32 3.20±0.15 1.60±0.15 0.30±0.20 0.50±0.20 0.55
＋0.15/-0.05
WLCR50 5.00±0.20 2.50±0.20 0.50±0.20 0.60±0.20 0.56±0.15
WLCR64 6.30±0.20 3.20±0.20 0.50±0.20 0.90±0.20 0.56±0.15
①
②③④⑤ ⑥
Symbol Material List
①Ceramic Substrate
②Conductor
③Resistor
④Over coat
⑤Marking
⑥Side Electrode
100
0
80
60
40
20
-55℃0℃70℃155℃
Power rating (%)
Ambient Temperature(℃)
150
100
50
0100 200 30050
Power rating (%)
Surface temperature (℃)
WLCR50
WLCR64
WLCR32
Unit : mm
