Ultra low ohmic Metal plate / High power type
Shunt Resistors
Data Sheet
PSR Series
Features
1) High power class up to 4 to 5W.
2) The lineup of ultra-low resistance value : correspondence from 0.2m
3) Excellent temperature coefficiency.
4) Ideal for current detection under high current circuit.
Products List
Operating
Size
∗
Rated power
Resistance
range
Temperature
coefficient
(ppm / °C)
Temperature
Range
Part No.
Tolerance
(mm)
(inch)
3921
(70°C)
(mΩ)
(°C)
0.3,0.5
1.0,2.0,3.0
0.2
175
75
J ( 5%)
G ( 2%)
F ( 1%)
PSR400
10×5.2
4W
225
150
75
−55 to +170
J ( 5%)
G ( 2%)
F ( 1%)
0.3,0.4,0.5
1.0,2.0
PSR500
15×7.75
5931
5W
∗
(+
20°C to +125°C)
Chip Resistor Dimensions and Materials
(Unit : mm)
Material
(Top)
L
Part No.
(mm)
(inch)
L
W
H
b
Resistance
t
1.85 0.15
0.3
0.5
1.0
2.0
3.0
0.2
0.3
0.4
0.5
1.0
2.0
W
t
1.30 0.15 Cu / Mn
0.90 0.15
10 0.3
5.2 0.3
0.5 0.1
2.0 0.6
PSR400 10×5.2
3921
1.15 0.15
Ni / Cr
0.90 0.15
H
b
(Bottom)
1.85 0.15
1.40 0.15
Cu / Mn
1.15 0.15
15 0.3 7.75 0.3 0.5 0.1
4.0 0.6
PSR500 15×7.75
5931
1.05 0.15
1.35 0.15
Ni / Cr
0.90 0.15
Derating Curve
When the ambient temperature exceeds 70°C, power dissipation must be adjusted according to the derating curves below.
100
80
60
40
20
0
−55
0
70
100
170
AMBIENT TEMPERATURE (°C)
Design and specifications are subject to change without notice.
Carefully check the specification sheet supplied with the product before using or ordering it.
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○ 2014 ROHM Co., Ltd. All rights reserved.
2014.03 - Rev.A