Thermistors provide moisture resistance

20th November 2017
Posted By : Mick Elliott
Thermistors provide moisture resistance

The DG series of glass-encapsulated thermistors from Ametherm 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.

The 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 1.5mm, 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 — 10kΩ, 40kΩ, 50kΩ, and 100kΩ — with resistance tolerances down to ±2%, a dissipation constant of >0.5mW/°C, and thermal time constant of <6.5s.

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.

Downloads


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Sensor+Test 2019
25th June 2019
Germany Nürnberg Messe
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris
Engineering Design Show 2019
16th October 2019
United Kingdom Ricoh Arena, Coventry
ELIV 2019
16th October 2019
Germany Bonn World Conference Center