Product News: Sensors, Monitors & Transducers

Compact NTC Chip Thermistors operate up to +150°C.

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Press Release Summary:

July 21, 2014 - STC0134-X, STC0138-X, STC0143, and STC0144-X series deliver repeatable performance for temperature monitoring and compensation in hybrid circuits for ICs in robotic assemblies and military telecom systems. Electrode surface is available in gold to prevent oxidation for reliability, and sizes are available down to 0.50 x 0.50 x 0.43 mm. Features include resistance from 100–5,000 Ω at 25 °C, tolerance down to ±5%, and beta from 3,000 K to 3,523 K.

Ametherm, Inc.

3111 N. Deer Run Rd., Carson, NV, 89701, USA

Original Press Release

Ametherm Introduces New NTC Chip Thermistors in Compact Sizes with High Temperature Ratings to +150 °C

Press release date: July 15, 2014

High-Stability Devices Bring Accurate Temperature Measurement to Robotic Assemblies and Military Telecom Systems

CARSON CITY, Nev. — Ametherm today introduced four new series of NTC chip thermistors for high-accuracy temperature measurement. Recently acquired from RTI Electronics Inc., the STC0134-X, STC0138-X, STC0143, and STC0144-X series devices are available in a variety of compact sizes, while providing fast response times and high-temperature operation to +150 °C.

The NTC chip thermistors released today deliver highly repeatable performance for temperature monitoring and compensation in hybrid circuits for ICs in robotic assemblies and military telecom systems. For increased reliability, the devices' electrode surface is available in gold to prevent oxidation.

Providing a high-stability replacement for leaded small-disc thermistors, STC0134-X, STC0138-X, STC0143, and STC0144-X series devices experience minimal drift from their initial electrical values. Available in sizes as small as 0.50 mm by 0.50 mm by 0.43 mm, the components feature resistance at 25 °C from 100 Ω to 5000 Ω, tolerance down to ± 5%, and beta from 3,000 K to 3,523 K. The thermistors are suitable for solder reflow assembly or gluing with epoxy.

Device Specification Table

Series Resistance
@ 25 °C (Ω)
Size (mm) Resistance ratio Beta
(°K)
STC0134-X 100 to 680 0.58 x 0.58 x 0.76 to 1.0 x 1.0 x 1.7 5.3 (±5%) 3000
STC0138-X 700 to 5000 0.89 x 0.89 x 0.97 to 1.3 x 1.3 x 1.6 6.9 (±3%) 3523
STC0143 500 0.50 x 0.50 x 0.43 5.3 (±3%) 3000
STC0144-X 150 to 500 0.64 x 0.64 x 0.33 to 0.76 x 0.76 x 0.28 5.3 (±3%) 3000

Offered through Dexter Magnetic Technologies and Sager Electronics, samples and production quantities of the NTC chip thermistors are available now, with lead times of six to eight weeks. Pricing for U.S. delivery starts at $0.19 per piece.

For more information or to request a sample, visit www.ametherm.com. Or call 800-808-2434 (toll free in the United States) or 775-884-2434 from outside the U.S. and Canada.

About Ametherm
Ametherm, headquartered in Carson City, Nevada, 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 www.ametherm.com or call 800-808-2434.

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