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Rugged General-Purpose Chip Resistors Help Shrink Auto, Telecom, Industrial Apps

March 10, 2025
ROHM’s new resistor family achieves equivalent rated power in a smaller size with a guaranteed stable long-term supply.

The MCRx family of general-purpose chip resistors from ROHM Semiconductor opens the door to greater miniaturization and enhanced performance across a variety of applications. The new lineup includes the high-power MCRS series and low-resistance, high-power MCRL series.

Both series address the need for higher levels of miniaturization and performance in automotive and industrial applications, where solution size and power density are critical.

The MCRS series improves rated power and temperature coefficient of resistance (TCR) characteristics by optimizing the internal structure and incorporating new materials that enable a more compact form factor. Compliant with the AEC-Q200 automotive reliability standard, their long-term reliability makes them a good choice for use in electric vehicles as well as communications infrastructure and industrial equipment.

Available in sizes ranging from 0402 (0.04 × 0.02 in.) through 6432 (6.4 × 3.2 mm), designers can readily find a product that meets their mounting space requirements. ROHM’s low-resistance variant of the MCRS series is offered in sizes ranging from 0805-size (0.08 × 0.05 in.) through 6432-size (6.4 × 3.2 mm). More size options will be available as devices are added to the series. 

Most members of the series are available now, including the MCR01SMCR03SMCR10SMCR18SMCR25SMCR50SMCR100SMCR10LMCR18LMCR25LMCR50L, and MCR100L, with additional resistance values to be added as needed.

Search by Resistance Value

Users can now search by series or resistance value and purchase samples on product pages.

>>Check out this TechXchange for similar articles and videos

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Dealing with resistors is not just about choosing the proper number of ohms.

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About the Author

Lee Goldberg | Contributing Editor

Lee Goldberg is a self-identified “Recovering Engineer,” Maker/Hacker, Green-Tech Maven, Aviator, Gadfly, and Geek Dad. He spent the first 18 years of his career helping design microprocessors, embedded systems, renewable energy applications, and the occasional interplanetary spacecraft. After trading his ‘scope and soldering iron for a keyboard and a second career as a tech journalist, he’s spent the next two decades at several print and online engineering publications.

Lee’s current focus is power electronics, especially the technologies involved with energy efficiency, energy management, and renewable energy. This dovetails with his coverage of sustainable technologies and various environmental and social issues within the engineering community that he began in 1996. Lee also covers 3D printers, open-source hardware, and other Maker/Hacker technologies.

Lee holds a BSEE in Electrical Engineering from Thomas Edison College, and participated in a colloquium on technology, society, and the environment at Goddard College’s Institute for Social Ecology. His book, “Green Electronics/Green Bottom Line - A Commonsense Guide To Environmentally Responsible Engineering and Management,” was published by Newnes Press.

Lee, his wife Catherine, and his daughter Anwyn currently reside in the outskirts of Princeton N.J., where they masquerade as a typical suburban family.

Lee also writes the regular PowerBites series

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