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Glass-Encapsulated Thermistors Designed for Automotive and Industrial Applications

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Hermetically Sealed Devices Provide Moisture Resistance, High-Temperature Operation, and Compact Size


CARSON CITY, Nev. — Ametherm announced that its DG series of glass-encapsulated thermistors for high-accuracy temperature sensing in automotive and industrial applications is now in stock at Digi-Key. Hermetically sealed DG series devices eliminate errors in resistance readings due to moisture penetration while offering high operating temperatures and a compact size.

Ametherm's glass-encapsulated DG series provides designers with faster, more accurate, and less expensive alternatives to thermocouples and RTD probes. DG series devices are free from limitations due to solder temperature, which enables them to offer users a wide operating temperature range of -40 °C to +300 °C. With diameters of only 1.5 mm, the devices boast a small size that allows for encapsulation in a variety of housings, such as ring lugs and hex nuts.

DG series thermistors are available in four resistance values at 25 °C — 10 kΩ, 40 kΩ, 50 kΩ, and 100 kΩ — with resistance tolerances down to ±2 %, a dissipation constant of >0.5 mW/°C, and thermal time constant of <6.5 s. The devices provide temperature coefficient of resistance of -3.9%/°C, -4.40 %/°C, and -4.75 %/°C; beta values of 3500 °K, 3950 °K, and 4200 °K; and 32 AWG dumet wire leads.

Samples and production quantities of the devices are available now, with factory lead times of six to eight weeks. Volume pricing for U.S. delivery starts at $0.41 per piece.

For more information, visit www.ametherm.com.

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