PEPI Thermal Protectors
PEPI thermal protectors from ATC Semitec offer superior and reliable over-temperature protection from 5°C to 200°C with current ratings up to 15A/250VAC. Their neat design small package sizes help to protect circuits in the tightest of spaces.
PEPI bi-metal protectors can be supplied as automatic-reset limiters, self-hold cut-outs or even one-shot fuses offering different levels of safety depending on what the application or approval standard requires. PEPI C and V thermostats are auto-resetting whereas the low-profile PEPI JS offers self-hold, non-resetting protection for both 240VAC and 120VAC.
PEPI J-2 and PEPI H bimetal fuses offer the ultimate in reliable thermal protection, with some ceramic versions offering over-temperature protection up to 280°C.
Other Products and Services from ATC Semitec
Surface Mount NTC Chip 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.
Precision NTC Thermistors
Our range of high precision NTC thermistors enable engineers to accurately control operating temperatures which is critical in many product applications within the automotive, home automation and medical device industries.
Precision thermistors are highly accurate with 0.5% resistance tolerances (or better) offering long term stability and control; their RT curve interchangeability eliminates the need for individual circuit calibration. Available with ±0.2°C (0-70°C) accuracy or better, they can operate up to 150°C and so are also suitable for use in automotive applications. With a wide range of R25 resistance values, B values and format types, please call us about specific requirements.
Fast Response Temp Probes
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
Unit 14, Cosgrove Business Park, Anderton, Northwich, Cheshire, CW9 6FY, United Kingdom
ATC Semitec is the UK’s top distributor of thermal components, offering NTC thermistors, platinum RTDs, thermostats, and more. We support engineers in energy-efficient product development across industries. Committed to sustainability, we’re on a Pathway to Net Zero and have earned the Ecovadis Silver Award.