Specifications are subject to change without notice
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PSR Series
PSR Series-Prosemi Shunt Resistors
Description
• Metal type Low-Resistance shunt resistor.
• Resistance value 0.3 m, 0.5m, 1m, 2m, 3m, 4m.
• Low thermal EMF.
• Low TCR.
• Very low inductance.
• Halogen free, lead free and RoHS compliant.
Applications
• Power modules.
• Frequency converters.
• Current sensor for power hybrid sources high current for automotive.
• Lithium battery protection board.
Part Number
PSR 25 S 3 F 0M50
【1】 【2】【3】【4】 【5】 【6】
【1】Series Name: Prosemi Shunt Resistor.
【2】Chip Size: 25: 2512，39: 3921
【3】Material: S: CuMnSn, M: CuMn, K: NiCr, C: Ni & Sn plated Copper
【4】Power Rating: 3=3W, 5=5W, J=Jumper.
【5】Resistance Precision: F: ±1%, J: ±5%, 0: Jumper.
【6】Resistance Code: R000: Jumper, R002: 2mΩ, 0M50: 0.5mΩ.
Electrical Characteristics
“*” : Other values may be available, contact factory
Size
Power
Rating at
70℃(W)
Resistance Range
(mΩ)
*
±1%;±5%
Element
TCR
( ppm/℃)
Operation
Temperature Range
Product temperature
coefficient (ppm/℃)
2512
3
0.3~2
±30
-55℃~+150℃
±250 for 0.3 mΩ and 0.5 mΩ
±200 for 1mΩ
±75 for 2~4 mΩ
2
3~4
I
max
=100A
Jumper
-
-
-
3921
7
0.5~2
±30
-55℃~+150℃
±75 for 0.5 mΩ and 1 mΩ
±60 for 2~3 mΩ
±50 for 4 mΩ
5
3~4
I
max
=160A
Jumper
-
-
-
Specifications are subject to change without notice
www.prosemitech.com
© No: POF02202300308001P (Engineering) 2 of 6
PSR Series-Prosemi Shunt Resistors
PSR Series
Note:
1) Ir =(P/R)
1/2
R: Resistance Value Ir: Rating Current P: Rating Power;
2) Product temperature coefficient: Includes the TCR effects of the resistor element and the copper terminal.
Physical Dimensions
Unit: mm
Size
Resistance
(mΩ)
L
W
T
A
P
Element Material
3921
Jumper
10±0.2
5.2±0.2
-
1.9±0.2
0.5±0.1
Ni & Sn plated Copper
0.5
0.8±0.2
CuMn
1
0.4±0.1
CuMn
2
0.6±0.1
NiCr
3
0.4±0.1
NiCr
4
0.3±0.1
NiCr
Jumper
-
Ni & Sn plated Copper
2512
0.3
6.4±0.2
3.2±0.2
0.95±0.1
1.53±0.2
0.4±0.1
CuMn
0.5
0.4±0.1
CuMnSn
1
0.3±0.1
CuMn
2
0.5±0.1
NiCr
3
0.3±0.1
NiCr
4
0.25±0.1
NiCr
Recommended Solder Pad Layout
Unit: mm
Type
L
a
b
2512
3.0
2.3
3.5
3921
5.8
2.5
6.2