• 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-Wire NTC Thermistor

    Semitec 103AT-5 thermistors incorporate the industry standard 103AT-2 NTC chip but are fitted with 30mm long solid bare lead-wires (0.5mm dia).  Available in a tape/reel format for auto-insertion.

    • ±1°C accuracy (or less) between -50°C and +80°C
    • ±1% R25 and B25/85 tolerances
    • Tape/Reel Options for auto-insertion
  • 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 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 103AT-11 IP67 Waterproof Temperature Sensors

    Semitec AT-11 waterproof NTC thermistor probes are TPE-encapsulated and offer IP67 integrity where you need security against moisture ingress.  The 103AT-11 version uses our very popular 103AT-2 thermistor.

    • Temperature range: -50°C to +110°C
    • Offers IP67 waterproof protection with 3.75kV isolation
    • Small tip ensures a fast response
  • 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, with radial /axial leads (FL type), within assemblies or ring sensors

    • Less than 0.15mm thin available
    • Wide temperature range; -50°C to +350°C
    • Thin substrate enables a very-fast response
    • Glass passivation ensures moisture resistance
  • 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 NT-4 Glass Bead 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 resistant.

    • Wide operating range: -50°C to +300°C
    • Fast thermal response
    • High accuracy and extremely reliable
  • 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
  • Semitec HT & HTF Series Chip NTC Thermistors

    Semitec HT series SMD thermistors are encapsulated NTC elements in a plastic casing.  The same size as a 1206 SMD chip thermistor, the HT package offers a unique and superior SMD temperature sensor.

    • Encapsulated NTC elements in an SOD-123 package
    • Standard SMD or axial lead version (HTF)
    • Operating temperature range: -40°C to +125°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
  • Epoxy-Coated Temperature Sensors

    An epoxy-coated temperature sensor where the NTC is encapsulated in several layers of epoxy, providing a seal for environmental and mechanical protection.  Offers a lower-cost sensor solution.

    • Epoxy-overcoat offers up to IP67 waterproof protection
    • Temperature range: -50°C to +110°C (125°C)
    • 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
  • STS1 Clip-on Pipe Temperature Sensors

    The STS1 pipe-clip temperature sensor is IP67 rated and using our FT thin-film thermistor, it offers a very fast thermal response.  Suitable for Legionnaires monitoring and hot water boiler systems.

    • Typical Time Constant (Tc) = ≤1s
    • Temperature Accuracy at 85°C is ±1°C
    • IP67 rated housing
  • Semitec KT High Accuracy SMD NTC Thermistor

    Semitec’s KT series SMD NTC thermistors offers a compact range of R25 values in 0603 and 0402 package sizes.  The ±1% R25 and B value tolerances means temperature accuracy of ±0.5°C or better.

    • R25 and B value tolerances ±1%
    • R25 values; 10k, 50k and 100kohms
    • Operating temperature range: -40°C to 125°C
  • Semitec STS3 Thin Flexible Film Temperature Sensor Assembly

    This versatile temperature sensor assembly 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 thin-film NTC thermistor sensors for monitoring surface temperatures up to 230°C.  E-V battery monitoring systems, personal care ,office automation and catering applications all benefit from using these “soft touch” sensors.

    • Fast response design (Tc ≤ 1s)
    • High temperature point calibrations e.g. at 180°C
    • Operating range up to 230°C
  • 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