Call Us: 01606 871 680


  • Semitec NC (Non-Contact) Sensors

    Using miniature FT thermistor technology, Semitec have developed a non-contact sensor which can be easily installed, is self-compensating and withstands more aggressive environments than conventional infra-red sensors.

    • High dust resistance
    • Operating temperature range: -10°C to 150°C
    • Resistant to electrical noise
  • CRD Constant Current Diodes

    CRDs are current regulating diodes (or constant current diodes) that help to maintain a fixed current value over a wide voltage range.

    • Constant current values from 0.1mA to 22mA
    • Operating temperature range:  -40°C to 150°C
    • Can be used in parallel or in series with Zener diodes
  • Semitec Zenamic MOVs

    Zenamic MOVs have large surge current handling capabilities.

    • Peak current surges of up to 6500A (8/20 s) and peak power surges of up to 565J (10/1000 s) respectively can be limited by these fast-acting devices.
  • Semitec AT-2 High Accuracy NTC Thermistors

    The Semitec AT-2 range of NTC thermistors were the first to use lead-frame production technology, creating consistently accurate 1% tolerance thermistors at a significantly lower cost than other NTCs.

    • R25 values from 1k ohm to 100k ohms
    • Uniform shape aids automatic assembly
    • Excellent long term reliability
  • Semitec AT-4 High Accuracy Lead Wire NTC Thermistor

    Semitec AT-4 NTC thermistors have flexible, PVC insulated lead-wires therefore offering all the technical benefits of the popular AT-2 thermistor but help simplify the assembly process.

    • High accuracy ±1% R25 resistance
    • Operating temperature range: -30℃ to 90℃
    • Long term reliability
  • Semitec AT-5 Lead In NTC Thermistor

    Semitec 103AT-5 thermistors incorporate the same NTC element as the 103AT-2 but are fitted with 30mm long solid bare lead-wires (0.5mm dia).

    • ±1 % accuracy or better between – 5°C and + 80°C
    •  Tight R25 and B25/85 tolerances (± 1%)
  • Semitec AP-2 Ultra High Accuracy NTC Thermistors

    Semitec AP-2 thermistors offer RT curve-matched accuracy in a rigid lead format, making them ideal for over-moulded temperature probes, p.c.b. mounting and automotive applications.

    • High accuracy ±0.5% R25 & Beta value tolerances
    • Temperature Range: –60°C to +150°C
    • Extensive range stock, 9 values from 2kΩ to 200kΩ
  • Semitec High Accuracy HT/HTF Mini Chip NTC Thermistor

    Highly accurate SMD thermistor. Offers improved reliability compared to existing chip thermistors.

    • High accuracy
    • Operating temperature range: -40°C to +125°C
    • SMD or SMD axial
  • Semitec KT High Accuracy SMD NTC Thermistor

    Semitec’s KT is a highly accurate SMD NTC thermistor.

    • Accurate to ±1% tolerance
    • Offers high levels of performance and reliability
    • Operating temperature range: -40°C to 125° C
    • Miniature – 1mm x 0.3mm x 0.5mm
  • Semitec 103AT-11 IP67 NTC Temperature Sensors

    AT-11 thermistor sensors are TPE encapsulated and use our popular AT-2 NTC thermistors.

    • Temperature range: -50°C to +110°C
    • Fast-response to temperature change
    • Offers up to IP67 waterproof protection with 3.75kV isolation
  • Semitec NT-4 Glass Bead NTC Thermistor

    Semitec’s NT-4 series thermistor is a small, glass-encapsulated bead NTC sensor.  The bead size is just 1.25mm diameter, extremely robust and ensures the NT-4 has a fast-response and also moisture-proof.

    • Wide operating range: -50°C to +300°C
    • Fast thermal response
    • High accuracy and extremely reliable
  • Semitec F-micro Miniature Temperature Sensors

    Using the latest thin-film thermistor technology, Semitec’s F-micro miniature temperature sensor has been specifically designed for the medical instrument market.

    • Extremely fast response time (<52ms)
    • Laser trimmed high accuracy (±0.14K at 37°C)
    • Miniature 0.5mm (or 0.3mm) diameter tip
  • Semitec JT Ultra-Thin Flexible Film NTC Thermistor

    Semitec’s JT series thermistors are ultra-thin flexible film NTCs that provide a very fast response to temperature change.  Laminated within 2 polymer layers, it is one of thinnest available worldwide.

    • Maximum 0.5mm thickness ensures fast response time
    • Flexible film format, with various R25 values
    • Operating range -50°C/+125°C
  • STS1 Series Clip-on Temperature Sensors

    The STS1 is an IP67 rated pipe-clip temperature sensor from Semitec. Incorporating our FT thin-film thermistor, it offers a fast thermal response.

    • Typical Tc of ≤1s
    • Accuracy ±1°C at 85°C
    • IP67 rated
    • Operating temperature range up to +120°C
  • Semitec ET Miniature Epoxy NTC Thermistor

    Originally designed for clinical thermometer applications, this small bead NTC thermistor is very versatile and suitable for a range of applications from heat detectors to miniature temperature sensors.

    • Small bead design ensures a very fast response
    • Operating temperature range: -40°C to+100°C
    • Various insulated lead-wire options
  • Semitec FT Thin Film High Temperature SMD Thermistor

    Semitec FT thin film thermistors outperform conventional SMD thermistors due to their miniature size, extreme thinness and high heat resistance.  Available as SMD or with axial leads (FL type).

    • Wide temperature range; -50°C to +350°C
    • Thin substrate enables a very-fast response
    • Glass passivation ensures moisture resistance
  • Epoxy-Coated Temperature Sensors

    The NTC element is first soldered to lead-wires and then encapsulated in several layers of epoxy, providing a seal for environmental and mechanical protection.

    • Offers up to IP67 waterproof protection.
    • Temperature range: -50°C to +110°C (125°C)
    • Epoxy-coating Cable length: 50mm to 10 metres
  • Semitec ET-3H Small Bead Epoxy NTCs

    The ET-3H thermistor was originally developed for clinical thermometer applications. With bead sizes of 1.4mm (or less) and flexible wire.

    • Fast response time and high accuracy
    • R37 tolerances of ±1% or smaller
    • Long term reliability
  • Semitec STS3 Thin Flexible Film Temperature Sensor

    This versatile temperature sensor is ideal for air-sensing, particularly for use in fire alarms and heat detectors, component and battery monitoring, rechargeable batteries and medical sensors.

    • Fast response design (Tc ≤ 1s)
    • High accuracy ±1%
    • Operating temperature range: -40°C  to +125°C
  • Semitec STS4 Flexible Surface Sensor for High Temperatures

    High temperature flexible thermistor suitable for use in sensing high surface temperatures up-to 230°C.

    • Fast response design (Tc ≤ 1s)
    • High accuracy ±3%
    • Operating range up to 230°C
    • Excellent long term stability
  • Thermopiles - Non-Contact Infrared Sensors

    The Semitec 10TP series thermopile is a very fast-acting IR (infrared) sensing device suitable for non-contact applications.  Typical applications include clinical ear thermometers, PCR machines, etc.

    • Operating temperature range: -10°C to +100°C
    • Very Fast Response, Tc = 15ms
    • Built-in Temperature Compensation