• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Power Electronic Tips

Power Electronic News, Editorial, Video and Resources

  • Products
    • Power Supplies
    • AC-DC
    • DC-DC
    • MOSFETS
    • Power Management
    • Battery Management
    • RF Power
    • Resistors
    • Capacitors
    • Magnetics
    • Transformers
  • Applications
    • LED Lighting
    • Rack Mount
    • Wireless
  • EE Forums
    • EDABoard.com
    • Electro-Tech-Online.com
  • EE Learning Center
    • Design Guides
      • WiFi & the IOT Design Guide
      • Microcontrollers Design Guide
      • State of the Art Inductors Design Guide
      • Power Electronics & Programmable Power
  • Video
    • EE Videos
    • TI Power Videos
    • Teardown Videos
  • Resources
    • Design Fast
    • eBooks / Tech Tips
    • FAQ
    • LEAP Awards
    • Podcasts
    • Webinars
    • White Papers

Thick-film shunt resistors feature 4-W rated power

December 1, 2021 By Redding Traiger Leave a Comment

ROHM Semiconductor introduced their new thick-film shunt resistors, LTR100L, optimized for industrial and consumer applications. Often used to detect current in battery protection and motor drive circuits, shunt resistors require higher accuracy to improve reliability and ensure high-efficiency operation.

Recent years have seen an emphasis on energy savings in the industrial and consumer fields, with efforts being made to reduce power consumption during drive operation by using motor inverters. At the same time, protection circuits are becoming more important in these fields as applications continue to increase in power.

ROHM has been working on expanding its considerable lineup, most recently with the GMR320 series of metal plate shunt resistors, released in February 2021. The devices feature a higher guaranteed rated power of up to 10W. Since April 2018, ROHM has been producing the LTR50 series of low ohmic thick-film shunt resistors rated at 2W. With these latest products, ROHM has expanded its lineup of thick-film shunt resistors to support an even higher power area.

The LTR100L series achieves the industry’s highest-rated power of 4W in the 3264 sizes (3.2mm × 6.4mm) / 1225 size (0.12inch × 0.25inch) by revising resistor materials and applying terminal temperature derating. This makes them ideal for current detection in motor control and overcurrent protection circuits for industrial and consumer applications, which are progressing towards a higher power. In addition, optimization of the element structure delivers best-in-class TCR (temperature coefficient of resistance) characteristics among thick-film shunt resistors. As a result, they are not easily affected by temperature – enabling high accuracy, high-reliability current detection.

Samples can be purchased from one piece from online distributors Digi-Key, Mouser, and Farnell (starting with 10mΩ, 47mΩ, and 91mΩ). Furthermore, a variety of content and tools useful for design, such as application notes, are available on ROHM’s website. Simulation Models will also be released.

You may also like:


  • Fuses, eFuses, thermistors, and fusible resistors – which and when?

  • Measuring a sense-resistor’s voltage drop, Part 3: CMV-suitable components
  • sense-resistor
    Measuring a sense-resistor’s voltage drop, Part 2: Isolation
  • current sense resistors
    A tradeoff case study: Sizing the current-sense resistor, Part 1
  • RoHS
    Taking resistor technology beyond RoHS

Filed Under: Consumer electronics, Development Tools, Industrial, Power Components, Power Management, Resistors Tagged With: rohmsemiconductor

Reader Interactions

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

CURRENT DIGITAL ISSUE

A frequency you can count on There are few constants in life, but what few there are might include death, taxes, and a U.S. grid frequency that doesn’t vary by more than ±0.5 Hz. However, the certainty of the grid frequency is coming into question, thanks to the rising percentage of renewable energy sources that…

More from the digital archive

DesignFast

Component Selection Made Simple.

Try it Today
design fast globle

Subscribe to our Newsletter

The Power Electronic eNewsletter delivers breaking electronic and power component news, resources, product innovations and more.

Subscribe today

EE TRAINING CENTER CLASSROOMS

EE Classrooms

RSS Current EDABoard.com discussions

  • How to set USB port as RS-485 entrance? How to interpret Growatt solar inverter commands?
  • Find Critical Path in Cadence Genus?
  • Simulation of a Press-ON-Press-OFF push button
  • HFSS 2022 R2 - Waveguide port configuration
  • Why this antenna azimuth and elevation direction are the same?

RSS Current Electro-Tech-Online.com Discussions

  • How know if solder iron has good quality tip?
  • How does a transistor works as a switch?
  • Peltier control
  • How to set USB port as RS-485 entrance? How to interpret Growatt solar inverter commands?
  • Component Identification

Footer

EE World Online Network

  • DesignFast
  • EE World Online
  • EDA Board Forums
  • Electro Tech Online Forums
  • Connector Tips
  • Microcontroller Tips
  • Analog IC Tips
  • Sensor Tips
  • Test and Measurement Tips
  • Wire and Cable Tips
  • 5G Technology World

Power Electronic Tips

  • Subscribe to our newsletter
  • Advertise with us
  • Contact us
  • About us
Follow us on TwitterAdd us on FacebookFollow us on YouTube Follow us on Instagram

Copyright © 2022 · WTWH Media LLC and its licensors. All rights reserved.
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media.

Privacy Policy