Mouser Stocks Ametherm's SURGE-GARD NTC Inrush Current Limiting Thermistors

Ametherm today announced that Mouser Electronics is now stocking the company's SURGE-GARD™ series of NTC inrush current limiting thermistors, which Ametherm acquired from RTI Electronics in 2013. The components are available worldwide via Mouser's award-winning website,, and its comprehensive resource catalogs.

Ametherm's SURGE-GARD NTC Inrush Current Limiting Thermistors

Manufactured in Ametherm's Carson City, Nevada, facility, SURGE-GARD series devices, available from Mouser Electronics, are capable of handling high steady-state currents to 36 A and input energy to 250 J. Available in multiple leaded package options with maximum diameters from 7.6 mm to 31.75 mm, the components offer resistance at +25 °C (R25) from 0.4 to 220 ohms with tolerances down to 10%, maximum operating voltage to 265 VRMS, and beta from 3000 °K to 3965 °K.

Constructed of specially formulated metal oxide ceramic materials, RoHS-2- and REACH-compliant SURGE-GARD thermistors are optimized for a wide variety of applications that require inrush current limiting to reduce noise and circuit failure -- including switching power supplies, AC motors, motor drives, audio amplifiers, and battery chargers. In these applications, the devices lower rectifier costs by reducing the required peak forward-surge-current rating.

"The SURGE-GARD series has represented an industry standard for circuit protection since 1971," said Andy Kerr, Mouser vice president of passives. "We couldn't be more excited that the line has found a home with Ametherm, who will continue to manufacture the popular devices in the U.S., allowing us to keep them in stock and readily available for our customers."

"We are proud to have acquired the SURGE-GARD line and to make these components available to meet the demand from Mouser's customers," said Mehdi Samii, vice president of engineering at Ametherm. "Furthermore, we will continue to manufacture these products with the same metal oxide mixtures that have produced the high-quality thermistors the industry has come to rely on for all these years."

Samples and production quantities of the SURGE-GARD line are available now, with lead times of five weeks for large orders.

About Ametherm
Ametherm, headquartered in Carson City, Nev., was founded in 1994 and specializes in inrush current limiting power thermistors for circuit protection in the power market industry. Ametherm's devices are some of the highest rated in the industry and provide the widest range of inrush current protection available. For more information, visit or call 800-808-2434.

About Mouser Electronics
Mouser Electronics, a subsidiary of TTI, Inc., is part of Warren Buffett's Berkshire Hathaway family of companies. Mouser is an award-winning authorized semiconductor and electronic component distributor, focused on the rapid introduction of new products and technologies to electronic design engineers and buyers. features more than 4 million products online from more than 500 manufacturers. Mouser publishes multiple catalogs per year providing designers with up-to-date data on the components now available for the next generation of electronic devices. Mouser ships globally to over 400,000 customers in 170 countries from its 492,000 sq. ft. state-of-the-art facility south of Dallas, Texas. For more information, visit

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