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. www.rohm.com 1/5 c 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) www.rohm.com 2/5 c 2015 ROHM Co., Ltd. All rights reserved. 2015.10 - Rev.F Soldering temperature(C)