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TRS™ and OHD™ Thermal Sensors

KEMET’s TRS and OHD thermal sensors are used to monitor temperature and maintain stable operation

Image of KEMET's TRS and OHD SeriesThermal sensors are used in a variety of applications and play an important role in maintaining stable operation in electronics by monitoring temperature. KEMET's TRS sensors are thermal reed switches and its OHD series are well-suited for thermal problem countermeasures and safety standard conformity. The unique proprietary design of both sensors features a magnet and temperature-sensing soft ferromagnetic substance called Thermorite®. The material's magnetic flux density decreases as the temperature increases turning it into a paramagnetic substance at the Curie temperature.

Which Thermal Sensor to Choose?

TRS Thermal Reed Switch

The TRS thermal reed switch is a highly reliable, precise, temperature-sensitive switch ideal for energy conservation. These products have been attested by the International Relay Association.

OHD Thermal Guard

Kemet's OHD thermal guard is developed for thermal problem countermeasures and safety standard conformity, which are becoming increasingly important for electronic devices.

TRS Thermal Reed Switch Benefits
  • High reliability for on/off operations
  • High-speed response
  • Long operational life
  • Excellent environmental durability
  • Extremely simple circuit design
  • Compact, light, and easy-to-handle
  • Dust-, explosion-, and corrosion-proof
  • Wide range of operating temperatures available from -10°C to +130°C
  • Excellent temperature accuracy of ±2.5°C
  • UL and CSA approved for TRS5xxxBLRU 100 V
  • UL approved for TRS5xxxBLRVU 200 V
  • RoHS/REACH compliant
TRS Thermal Reed Switch Applications
  • Temperature detection and overheat monitoring of electric appliances
  • Heat-retention heater control for rice cookers
  • Defrost for air conditioners and vending machines
  • Roll heater temperature control for copying machines
  • Radiator water temperature detection for automotive electrical fan control
OHD Thermal Guard Benefits
  • High reliability for on/off operations
  • High-speed response
  • Long operational life
  • Excellent environmental durability
  • Extremely simple circuit design
  • Compact, light, and easy-to-handle
  • Dust-, explosion-, and corrosion-proof
  • Wide range of operating temperatures available in 5°C increments from +30°C to +130°C
  • UL, CSA and TÜV approved
  • RoHS/REACH compliant
  • Compatibility with extremely low (0.1 mW or lower) signals to high power (6 W) levels 
OHD Thermal Guard Applications
  • Atmospheric temperature detection and overheating monitoring of power transistors
  • Power modules
  • Room heaters
  • Hot gas heaters
  • PPCs
  • Amplifiers
  • Motors
  • HDDs
  • FDDs

Engineering Kit

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
THERMAL SENSOR ENGINEERING KITTXS ENG KIT 02THERMAL SENSOR ENGINEERING KIT5 - ImmediateView Details

TRS™ Series Thermal Reed Switches

ImageManufacturer Part NumberDescriptionSwitching TemperatureReset TemperatureAvailable QuantityView Details
THERMOSTAT 90DEG C SPST-NC MODTRS5-90BLRUTHERMOSTAT 90DEG C SPST-NC MOD194°F (90°C)176°F (80°C)1510 - ImmediateView Details
THERMOSTAT 50DEG C SPST-NC MODTRS5-50BLRUTHERMOSTAT 50DEG C SPST-NC MOD122°F (50°C)104°F (40°C)582 - ImmediateView Details
THERMOSTAT 60DEG C SPST-NC MODTRS5-60BLRVUTHERMOSTAT 60DEG C SPST-NC MOD140°F (60°C)122°F (50°C)205 - ImmediateView Details
THERMOSTAT 60DEG C MODULE WIRETRS5-60BLR00VTHERMOSTAT 60DEG C MODULE WIRE140°F (60°C)-287 - ImmediateView Details
THERMOSTAT 110DEG C SPST-NC MODTRS5-110BLRUTHERMOSTAT 110DEG C SPST-NC MOD230°F (110°C)212°F (100°C)300 - ImmediateView Details

OHD™ Series Thermal Guards

ImageManufacturer Part NumberDescriptionSwitching TemperatureAvailable QuantityView Details
THERMOSTAT 65DEG C SPST-NC MODULOHD3-65BTHERMOSTAT 65DEG C SPST-NC MODUL149°F (65°C)481 - ImmediateView Details
THERMOSTAT 40DEG C SPST-NO MODULOHD3-40MTHERMOSTAT 40DEG C SPST-NO MODUL104°F (40°C)785 - ImmediateView Details
THERMOSTAT 70DEG C SPST-NC MODOHD5R-70BTHERMOSTAT 70DEG C SPST-NC MOD158°F (70°C)815 - ImmediateView Details
THERMOSTAT 90DEG C SPST-NC AXIALOHD1-90BTHERMOSTAT 90DEG C SPST-NC AXIAL194°F (90°C)1183 - ImmediateView Details
THERMOSTAT 100DEG C NC AXIALOHD1-100BTHERMOSTAT 100DEG C NC AXIAL212°F (100°C)275 - ImmediateView Details
Updated: 2018-10-29
Published: 2016-02-04