# ROHM's New High Anti-surge Chip Resistors in "SDR01 Series" Achieve 0.33W Rated Power in 0402 Size

- Link: https://www.thailand-business-news.com/pr-news/rohms-new-high-anti-surge-chip-resistors-in-sdr01-series-achieve-0-33w-rated-power-in-0402-size
- Published: 2026-09-11T14:00:00+07:00
- Author: PR Newswire

KYOTO, Japan, Sept. 11, 2026 /PRNewswire/ — ROHM Co., Ltd. has developed the "SDR01
Series" of high anti-surge chip resistors, achieving a high rated power of 0.33W
in the 0402 (1005 Metric) size. Designed for electronic equipment where mounting
densities continue to increase, the series is well suited for automotive, industrial,
consumer electronics, and AI server applications. The new products help save board
space and reduce component count by enabling replacement of larger-size resistors
and consolidation of resistors while maintaining the reliability required of anti-
surge chip resistors.

SDR01 Series product lineup page: [https://www.rohm.com/products/resistors/high-reliability-resistors/high-anti-surge-chip-resistors?PS_ResistorSize=1005(0402)#parametricSearch](https://www.rohm.com/products/resistors/high-reliability-resistors/high-anti-surge-chip-resistors?PS_ResistorSize=1005(0402)#parametricSearch)

Figures: Product features
[https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202609035220/_prw_PI1fl_nzMTFAeK.jpg](https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202609035220/_prw_PI1fl_nzMTFAeK.jpg)

As electronic equipment becomes more highly functional and requires higher power,
demand is rising across the automotive, industrial, and consumer markets for electronic
components that combine compact size with high power handling. These trends are 
also increasing the need for smaller high-reliability chip resistors, including 
anti-surge products. In power supply circuits and around interfaces, resistance 
to surges and electrostatic discharge (ESD), as well as high-power capability, is
required.

To address these needs, ROHM optimized the resistive element and electrode designs
of the SDR01 Series. This enables high rated power to be guaranteed in the 0402 
size while securing the reliability expected of high anti-surge chip resistors.

The new products guarantee 0.33W up to the rated terminal temperature of Tk=125 
deg C. This makes them easier to use in demanding thermal environments, such as 
high-density mounting and areas around heat-generating components, helping reduce
the thermal design burden.

In addition, these products achieve a TCR of plus or minus 100ppm/deg C for 10 ohms
less than or equal to R less than or equal to 2.2 megohms. By suppressing resistance-
value fluctuations caused by temperature changes, the products support stable circuit
operation and contribute to smaller, more reliable power supply circuits and peripheral
interface circuits.

ROHM will continue to expand its lineup of high-reliability chip resistors, contributing
to greater miniaturization, higher power handling, and higher reliability in electronic
equipment.

News release: [https://www.rohm.com/news-detail?news-title=2026-09-10_news_resistor&defaultGroupId=false](https://www.rohm.com/news-detail?news-title=2026-09-10_news_resistor&defaultGroupId=false)

About ROHM: [https://kyodonewsprwire.jp/attach/202609035220-O1-VsjR7JRC.pdf](https://kyodonewsprwire.jp/attach/202609035220-O1-VsjR7JRC.pdf)

Logo: [https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202512100752/_prw_PI2fl_eye2CRM2.jpg](https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202512100752/_prw_PI2fl_eye2CRM2.jpg)

Official website: [https://www.rohm.com/](https://www.rohm.com/) 

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