Passive Components Blog
No Result
View All Result
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Advances in the Environmental Performance of Polymer Capacitors

    Vishay Releases DLA Tantalum Polymer Capacitors for Military and Aerospace

    Vishay Expanded Inductor Portfolio With More Than 2000 Stock Items 

    Paumanok Releases Capacitor Foils Market Report 2025-2030

    Modelithics Welcomes CapV as a Sponsoring MVP

    Wk 40 Electronics Supply Chain Digest

    Benefits of Tantalum Powder Stress–Strain Curve Evaluation vs Conventional Wet Test

    Electrolyte Selection and Performance in Supercapacitors

    Connector PCB Design Challenges

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

    Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

    How to Calculate the Output Capacitor for a Switching Power Supply

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Advances in the Environmental Performance of Polymer Capacitors

    Vishay Releases DLA Tantalum Polymer Capacitors for Military and Aerospace

    Vishay Expanded Inductor Portfolio With More Than 2000 Stock Items 

    Paumanok Releases Capacitor Foils Market Report 2025-2030

    Modelithics Welcomes CapV as a Sponsoring MVP

    Wk 40 Electronics Supply Chain Digest

    Benefits of Tantalum Powder Stress–Strain Curve Evaluation vs Conventional Wet Test

    Electrolyte Selection and Performance in Supercapacitors

    Connector PCB Design Challenges

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

    Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

    How to Calculate the Output Capacitor for a Switching Power Supply

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

ROHM expands its PSR series with ultra-low ohmic shunt resistors for automotive and industrial applications

26.1.2018
Reading Time: 3 mins read
A A

source: Rohm news

Compact designs contribute to improved performance in high power applications. With its PSR100 series, ROHM offers a significantly more compact version of its proven PSR series. The PSR100 series ultra-low ohmic shunt resistors have a high-power capability and are suited to current measurement in automotive and industrial applications.

RelatedPosts

Advances in the Environmental Performance of Polymer Capacitors

Vishay Releases DLA Tantalum Polymer Capacitors for Military and Aerospace

Vishay Expanded Inductor Portfolio With More Than 2000 Stock Items 

The new shunt resistors, which are based on a high-performance metal alloy as the resistive element, feature superior temperature coefficients (TCR) from 50ppm to 150ppm. Thanks to ROHM’s innovative precision welding technology, they deliver a high rated power of 3W coupled with an ultra-compact form factor of 6.35mm x 3.05mm. Their resistance range covers 0.3mΩ to 3.0mΩ. The resistance tolerance is specified with F (1%). The operating temperature range is –55°C to +170°C.

The PSR100 series is the ideal solution for automotive and industrial applications as well as many other areas with high requirements in terms of performance and size. These include for example on-board chargers, electronic compressors and EPS in motor vehicles in addition to UPS and base stations.

PSR Series Shunt Resistors

High power applications supported
Shunt resistors are widely used in the automotive and industrial sectors for measuring current in high power applications. Due to the increasing demand for electric vehicles and the need to provide greater safety and efficiency, the automotive sector is seeing a shift towards computerisation and electro-mechanical systems. This has led to an increasing number of small motors and ECUs being used in the vehicles, which in turn drives up the demand for compact shunt resistors that can support higher power. To cater to this demand, ROHM has expanded its PSR series of high power low-resistance shunt resistors.

Higher rated power achieved using precision welding technology and high performance alloy

Excellent temperature coefficient of resistance – even in the ultra-low resistance region
Generally, the lower the resistance, the higher the temperature coefficient of resistance (TCR). In line with this, ROHM used a high-performance alloy as a high-resistivity metal, which ensures superior TCR, even in the ultra-low resistance region. The latest version is currently available with resistances from as low as 0.3mΩ, thus facilitating a wider range of applications.

Superior temperature coefficient of resistance - even in the ultra-low-ohmic region

Circuit Diagram

Circuit Diagram

Specifications

Part No. Size (mm)
[inch]
Rated Power
(+70ºC)
Resistance
Tolerance
Temperature*
Coefficient
of Resistance (ppm/ºC)
Resistance
Range (mΩ)
Operating Temp.
Range (Cº)
NEWPSR100 6.35 x 3.05
[2512]
3W F(±1%) ±150 0.3 -55ºC to + 170ºC
±115 0.5
±100 1.0
±50 2.0, 3.0
PSR400 10 x 5.2
[3921]
4W F(±1%) ±225 0.2◊
±175 0.3, 0.5
±75 1.0, 2.0, 3.0
PSR500 15 x 7.75
[5931]
5W F(±1%) ±250 0.1◊
±225 0.2
±150 0.3, 0.4, 0.5
±75 1.0, 2.0

◊ These products are under development, and therefore the specifications are subject to change without notice. Please contact a ROHM sales representative for more information.
* +20ºC to +125ºC

Terminology

TCR (Temperature Coefficient of Resistance)
The lower the value, the less resistance change with a change in ambient temperature. This makes it possible to suppress variations during device operation.

Related

Recent Posts

Advances in the Environmental Performance of Polymer Capacitors

8.10.2025
2

Researchers Demonstrated High Energy Ceramic Capacitors Stable in Wide Temperature Range

2.10.2025
24

Stackpole Offers High Voltage Plate Resistors up to 40KV

2.10.2025
18

How to Manage Supercapacitors Leakage Current and Self Discharge 

1.10.2025
39

Experimental Evaluation of Wear Failures in SMD Inductors

1.10.2025
36

Resonant Capacitors in High-Power Resonant Circuits

1.10.2025
37

Littelfuse Releases First Reflow-Compatible Illuminated Tactile Switch

1.10.2025
7

Vishay Unveils 5W Power Metal Strip Resistor in Compact 1206 Case Size

1.10.2025
24

Polymer Tantalum Capacitors Beyond AEC-Q200 LEO Satellites

30.9.2025
54

Components Thermal and Frequency Challenges in 6G Base Stations

30.9.2025
18

Upcoming Events

Oct 14
16:00 - 17:00 CEST

Smart Sensors, Smarter AI: Building Reliable Edge Systems

Oct 17
12:00 - 14:00 EDT

External Visual Inspection per MIL-STD-883 TM 2009

Oct 20
October 20 - October 23

Digital WE Days 2025 – Virtual Conference

Oct 21
October 21 @ 12:00 - October 23 @ 14:15 EDT

Space and Military Standards for Hybrids and RF Microwave Modules

Oct 28
8:00 - 15:00 CET

Power Up Your Design: SN6507 and the Ready-to-Use Development Kit

View Calendar

Popular Posts

  • Buck Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Boost Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Flyback Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • LLC Resonant Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • SEPIC Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Ripple Current and its Effects on the Performance of Capacitors

    3 shares
    Share 3 Tweet 0
  • Dual Active Bridge (DAB) Topology Explained

    0 shares
    Share 0 Tweet 0
  • What is a Dielectric Constant and DF of Plastic Materials?

    4 shares
    Share 4 Tweet 0
  • Flying Capacitors Explained

    0 shares
    Share 0 Tweet 0
  • MLCC and Ceramic Capacitors

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

Passive Components Blog

© EPCI - Leading Passive Components Educational and Information Site

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

No Result
View All Result
  • Home
  • Knowledge Blog
  • Premium Suppliers

© EPCI - Leading Passive Components Educational and Information Site

This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.
Go to mobile version