PSR Datasheet, PDF (1/9 Pages) Rohm – Ultra low ohmic metal plate

Ultra low ohmic metal plate / high power type shunt resistors
PSR series
Datasheet
●Features
1)High power class up to 4 to 5W.
2)The lineup of ultra-low resistance value : correspondence from 0.2mΩ
3)Excellent temperature coefficiency.
4)Ideal for current detection under high current circuit.
●Products list
Part No.
Size
(mm) (inch)
Rated power
(70℃)
(W)
Tolerance
Resistance range
(mΩ)
Temperature
coefficient*
(ppm / ℃)
Operating
temperature
range
(℃)
PSR100 6432 2512
3W
F ( ±1% )
0.3
0.5
1.0
2.0,3.0
±150
±115
-55 ～ +170
±100
±50
PSR400 10×5.2 3921
4W
PSR500 15×7.75 5931
5W
F ( ±1% )
F ( ±1% )
●Chip resistor dimensions and materials
0.3,0.5
1.0,2.0,3.0
0.2
0.3,0.4,0.5
1.0,2.0
±175
-55 ～ +170
±75
±225
±150
-55 ～ +170
±75
*(+20℃ to +125℃)
(Unit : mm)
Part No. L
W
H
b Resistance
t
Material
PSR100 6.35±0.15 3.05±0.25 0.35±0.15 1.12±0.3
PSR400 10.0±0.3 5.2±0.3 0.5±0.15 2.0±0.6
PSR500 15.0±0.3 7.75±0.3 0.5±0.15 4.0±0.6
0.3 mΩ
0.5 mΩ
1.0 mΩ
2.0 mΩ
3.0 mΩ
0.3 mΩ
0.5 mΩ
1.0 mΩ
2.0 mΩ
3.0 mΩ
0.2 mΩ
0.3 mΩ
0.4 mΩ
0.5 mΩ
1.0 mΩ
2.0 mΩ
1.45±0.15
1.15±0.15
0.75±0.15
1.00±0.15
0.75±0.15
1.85±0.15
1.30±0.15
0.90±0.15
1.10±0.15
0.90±0.15
1.85±0.15
1.40±0.15
1.15±0.15
1.05±0.15
1.35±0.15
0.90±0.15
Cu/Mn
Ni/Cr
Cu/Mn
Ni/Cr
Cu/Mn
Ni/Cr
●Derating Curve
■PSR 100
When the terminal temperature exceeds 140°C, power dissipation
must be adjusted according to the derating curves below.
■PSR 400 / 500
When the ambient temperature exceeds 70°C, power dissipation
must be adjusted according to the derating curves below.
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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2017.06 - Rev.G