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 0.2m
3)Excellent temperature coefficiency.
4)Ideal for current detection under high current circuit.
Products list
Operating
Size
Rated power Temperature
Resistance range temperature
(70) coefficient*
Part No. Tolerance
range
(mm) (inch)
(W) (m) (ppm / ) ()
0.3 150
0.5 115
PSR100 6432 2512 3W F ( 1% ) -55 +170
1.0 100
2.0,3.0 50
0.3,0.5 175
PSR400 105.2 3921 4W F ( 1% ) -55 +170
1.0,2.0,3.0 75
0.2 225
PSR500 157.75 5931 5W F ( 1% ) 0.3,0.4,0.5 150 -55 +170
1.0,2.0 75
*(+20 to +125)
Chip resistor dimensions and materials (Unit : mm)
Resistance Material
Part No. L W H b t
0.3 m 1.450.15
0.5 m 1.150.15 Cu/Mn
PSR100 6.350.15 3.050.25 0.350.15 1.120.3 1.0 m 0.750.15
2.0 m 1.000.15
Ni/Cr
3.0 m 0.750.15
0.3 m 1.850.15
0.5 m 1.300.15 Cu/Mn
PSR400 10.00.3 5.20.3 0.50.15 2.00.6 1.0 m 0.900.15
2.0 m 1.100.15
Ni/Cr
3.0 m 0.900.15
0.2 m 1.850.15
0.3 m 1.400.15
Cu/Mn
0.4 m 1.150.15
PSR500 15.00.3 7.750.3 0.50.15 4.00.6
0.5 m 1.050.15
1.0 m 1.350.15
Ni/Cr
2.0 m 0.900.15
Derating Curve
PSR 100 PSR 400 / 500
When the terminal temperature exceeds 140C, power dissipation When the ambient temperature exceeds 70C, power dissipation
must be adjusted according to the derating curves below. 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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2016 ROHM Co., Ltd. All rights reserved.
2017.10 - Rev.HPSR series
Datasheet
Characteristics
Guaranteed value
Test items Test conditions
Resistor type
Measuring method : 4probe per Bottom terminal
Resistance F ( 1% )
Variation of resistance
See P1 Measurement+20/+125
with temperature
Overload 0.5 Rated power5 5s
A new uniform coating of minimum of 95% of FluxRosin- Ethanol solution(25%weight)
with diethylamine hydrochloride(3%weight)
the surface being immersed and no
Solderability
Soldering condition2455
soldering damage.
Duration of immersion2.00.5s
1.0
Resistance to Soldering condition2605
soldering heat
No remarkable abnormality on the appearance. Duration of immersion101s
Rapid change of
1.0 Test temp-55 +155 5cycle
temperature
40 93(Relative humidity)
Damp heat, steady state 0.5
Test time1,000h1,048h
Terminal temperature:140,Rated power
ENDURANCE AT 140
(terminal temperature) 1.0 1.5h:ON0.5h:OFF
(PSR100)
Test time1,000h1,048h
Ambient temperature:70,Rated power
ENDURANCE AT 70
1.0 1.5h:ON0.5h:OFF
(ambient temperature)
Test time1,000h1,048h
170
Endurance at 170 1.0
Test time1,000h1,048h
Component solvent 235, Immersion cleaning, 101s
0.5
Resistance Solvent: 2-propanol
Bend strength of
Without open -
the end face plating
Compliance Standard(s) : IEC60115-8
JISC 5201-1
Solder conditions
Recommeded solder profile
Reflow
Temperature()
260 220 150180
Peak
Time(s) 60s 120s
10s Max.
(Note) About flow soldering
This part has the structure that resistive element exposed.
Therefore, the solder may be attached to resistive element if
Flow soldering is used, and resistance value may be outside
of the spec.
This part is ultra low ohmic resistoe.If the solder is not equally
attached on the whole area between the bottom electrode
and land pattem, resistance value may be outside of the
spec.
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2016 ROHM Co., Ltd. All rights reserved.
2017.10 - Rev.H