Glass Thermistors

SMD NTC chip thermistors have been developed as a surface-mount temperature sensor option and offer very cost-effective, reliable temperature control for printed circuit applications. These are particularly useful where  space is limited and with chip sizes down to 0201, they can be used in the tightest of applications and closer to the heat source

Available with a wide range of resistance values, B values and tolerances down to ±1%, they are suitable for applications such as the temperature measurement and temperature compensation of fire detectors, wearable devices, lighting controls and smart meters.

We can also supply bespoke values for  volume applications, so please contact us for specific queries.

Some temperature control applications, such as domestic showers and instant water heaters, require a very fast thermal response of 1 second or less. This is to maximise the thermal efficiency of the device and avoid potential scalding of the user.

In response to this, ATC Semitec stock a number of very fast-response temperature probes where the NTC thermistor is situated in the very tip of the sensor. This reduces the thermal path to the thermistor and thus minimises the thermal response time. Response times can be further accelerated by using our thin wall tip or exposed NTC sensor.

Our standard sensor  assembly packages include: screw threaded bosses, bayonet fittings and push-fit/clip-in designs – all of which are available with flying leads and/or industry standard connector options.

ATC Semitec stock Campini air and surface-sensing adjustable thermostats which are widely used throughout the heating and domestic appliance industry.  A Campini thermostat’s large bimetal blade ensures excellent repeatability and minimum differential (hysteresis), thus ensuring reliable and accurate temperature control.

There are air-sensing thermostats (TY53) where the I²R effects of through current are negligible and also anticipatory designs (TY35-P) where current flowing through the bimetal blade helps trick the thermostat into switching “early”, thus improving the temperature control function.

These adjustable thermostats are capable of switching over 100k cycles with a current rating of 16A/250VAC, so loads of up to 4kW can be readily controlled.  With an angular spindle rotation of 300 degrees, you can accurately set the temperature to the desired control level from 6°C to 70°C.  Differentials between 1K~3K can be achieved and versions with anticipatory resistors can improve this further.  These variable thermostats can also be set down at their minimum setting (6°C±4K) to act as frost protection or anti-condensation controls.