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
Size Operating Automotive
Rated power Resistance Temperature
Temperature Grade
Part No. Tolerance range coefficient
Range Available
(mm) (inch)
(70C) (m) (ppm / C)
(C) (AEC-Q200)
0.3,0.5 175
PSR400 10 5.2 3921 4W
F (1%)
1.0,2.0,3.0 75
0.2 225 55 to +170 Yes
PSR500 15 7.75 5931 5W 0.3,0.4,0.5 150
F (1%)
1.0,2.0 75
(+20C to +125C)
Chip Resistor Dimensions and Materials
(Unit : mm)
(Top)
L
Part No. LWtHb Resistance Material
0.3m 1.850.15
W
0.5m 1.300.15 Cu / Mn
PSR400 100.3 5.20.3 0.50.1 2.00.6 1.0m 0.900.15
t
H
2.0m 1.150.15
b
(Bottom)
Ni / Cr
3.0m 0.900.15
0.2m 1.850.15
0.3m 1.400.15
Cu / Mn
0.4m 1.150.15
150.3 7.750.3 0.50.1 4.00.6
PSR500
0.5m 1.050.15
1.0m 1.350.15
Ni / Cr
2.0m 0.900.15
Derating Curve
When the ambient temperature exceeds 70C, 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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2015 ROHM Co., Ltd. All rights reserved.
2015.10 - Rev.F
RATED POWER (%)
PSR Series Data Sheet
Characteristics
Guaranteed Value
Test Items Test Conditions
Resistor Type
Measuring method : 2probe per terminal
Resistance F : 1%
Probes
Variation of resistance
Measurement : +20/+125
See P1
with temperature
Overload 0.5% Rated power5,5s
A new uniform coating of minimum of 95% Rosin- Ethanol solution(25% weight)
Soldering condition : 2455C
Solderability of the surface being immersed an no
soldering da a Duration of immersion : 2.00.5s.
Resistance to 1.0% Soldering condition : 2605C
soldering heat No remarkable abnormality on the appearance. Duration of immersion : 101s
Rapid change of
1.0% Test temp. : 55C to +155C 5cycle
temperature
40C, 93%RH (Relative Humidity)
Damp heat, steady state 0.5%
Test time : 1,000h to 1,048h
70C Rated power
Endurance at 70C 1.0%
1.5h : ON 0.5h : OFF
Test time : 1,000h to 1,048h
70C
Endurance at 170C 1.0%
Test time : 1,000h to 1,048h
Component Solvent 235C
0.5%
Resistance Solvent : 2propanol
Bend strength of
Without open
the end face plating
Compliance Standard(s) : IEC601158
JISC 52011
Solder Conditions
Recommended solder profile
Reflow
260C5C
300
Temperature(C) 260 220 150 to 180150 to 180
max. 10s
Peak
Time(s) 60s 120s
10s Max.
250
(Note) About flow soldering
200
1 This part has the structure that resistive element is exposed.
Therefore, the solder may be attached to resistive element
150 if Flow soldering is used, and resistance value may be outside
150 180C
of the spec.
2 This part is ultra low ohmic resistor.
max. 120s
100
If the solder is not equally attached on the whole area
between the bottom electrode and land pattern,
220C over
50
resistance value may be outside of the spec.
max. 60s
0
01234
(min)
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2015 ROHM Co., Ltd. All rights reserved.
2015.10 - Rev.F
Soldering temperature(C)