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Semitec

  • NC Non-Contact Sensors F-Type

    Utilising micro FT thermistor technology, Semitec have developed a sensor which can be easily installed, is self-compensating and can withstand more aggressive environments than conventional infra-red sensors.

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

    CRDs maintain a constant current flow despite voltage fluctuations.

    • Offers constant current values from 0.1mA to 22mA.
    • Operating temperature range:  -40° to 150°C
    • Combining in parallel or in series with a zener, even higher current and voltage ratings can be achieved
  • 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 Thermistor

    The Semitec AT-2 range of NTC thermistors were the first to use lead-frame technology to create consistently accurate 1% tolerance NTC’s at a significantly lower cost than other NTC products.

    • R25 values from 1kohm to 100kohms
    • 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

    Our popular Semitec AP thermistors offer an even higher accuracy than our Semitec AT thermistors.

    • Extremely high accuracy (±0.5%) tolerances
    • Temperature Range: –60˚C to + 80˚C
    • We stock an extensive stock range from  2.00 kΩ – 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 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
  • AT-11 Temperature Sensors

    The AT-11 is a TPE encapsulated sensor suitable for temperatures from -50°C/+110°C. The sensing portion is just 5mm x 6mm x 15mm long giving a fast response to thermal change. The sensor tip is sealed to the leadwires during the moulding process to ensure IP67 integrity and so can be used where moisture ingress is normally a problem – this overmoulding also helps to provide an insulation strength to 3.75kV.
    The industry standard 103AT-11 uses our highly reliable 103AT-2 thermistor (accuracy ±0.3°C at 25°C) and we stock the 600mm, 1.5m and 3m long versions. Other R25/B value combinations using our AT-2 and AP-2 series thermistors are also available for volume applications.

  • 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

    This Semitec NT-4 supersedes the popular Semitec GT-2, offering superior performance with faster response times. It has a small 1.25mm glass bead diameter, which is extremely robust, ensuring that the Thermistor is moisture-proof.

    • High temperature rating: -50°C to +300°C
    • Fast response times
    • High accuracy and reliability
  • Semitec F-micro Miniature Temperature Sensors

    Using further advances in Semitec’s thin-film thermistor technology, the Fμ temperature sensor has been specifically designed with medical purposes in mind. 2 stock items available.

    • Extremely fast response time (<51ms)
    • High accuracy (±0.14K at 37°C)
    • Laser trimmed for highest accuracy
    • Glass encapsulated
  • Semitec JT Ultra-Thin Flexible Film NTC Thermistor

    Semitec’s JT series of 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.

    • Less than 0.5mm thick.
    • Operating range -50°C/+125°C
    • Very fast response times.
    • Standard R25 values are 10kohms and 100kohms
  • 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 wide range of applications

    • Highly accurate and very fast response
    • Operating temperature range: -40°C to+100°C
    • Long term reliability
    • Insulated lead-wire options
  • Semitec FL/FT Glass Film High Temperature SMD Thermistor

    These micro thin film thermistors out perform conventional thermistors due to miniaturisation, quick response time and their high heat resistance.

    • High temperature resistance -50° to +250~350°C
    • Available either in SMD or SMD axial format (FL)
    • Available on tape and reel.
  • 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 infrared sensing device suitable for non-contact applications.

    • Operating temperature range: -10°C to +100°C