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Ametherm's SURGE-GARD(TM) Line of NTC Inrush Current Limiting Thermistors Now in Stock at Digi-Key

CARSON CITY, NV -- (Marketwired) -- 06/24/14 -- Ametherm today announced that global electronic components distributor Digi-Key Corporation 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 Digi-Key's website,

Manufactured in Ametherm's Carson City, Nevada, facility, SURGE-GARD series devices, available from Digi-Key, 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 degrees C (R25) from 0.4 to 220 ohms with tolerances down to 10%, maximum operating voltage to 265 VRMS, and beta from 3000 degrees K to 3965 degrees 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 delivered reliable circuit protection to the electronics industry for over forty years, and we are excited to see that tradition continue with Ametherm," said Tom Busher, vice president, global IP&E of Digi-Key.

"Digi-Key has earned a worldwide reputation as the go-to source for electronic components, and we are proud to have the company stocking our SURGE-GARD line," said Mehdi Samii, vice president of engineering at Ametherm. "Over the years, the industry has come to rely on these thermistors for unmatched circuit protection, and we will continue to manufacture them with the same metal oxide mixtures that have produced the high-quality that Digi-Key's customers have come to expect."

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 Digi-Key Corporation
Digi-Key Corporation, based in Thief River Falls, Minn., is a global, full-service provider of both prototype/design and production quantities of electronic components, offering more than three million products from over 650 quality name-brand manufacturers. With over one million products in stock and an impressive selection of online resources, Digi-Key is committed to stocking the broadest range of electronic components in the industry and providing the best service possible to its customers. Additional information and access to Digi-Key's broad product offering is available at

Link to detailed product specifications:

Link to product photo:

Agency Contact:
Bob Decker
+1 415 409 0233
Email Contact

Ametherm Contact:
Lori Morton
+1 775 884 2434
Email Contact

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