Sinomas Mica heaters have superior heating performance while being flexible in one dimension. They consist of an etched foil element sandwiched in between two layers of mica plate and can operate at temperatures up to 500°C.

The insulating material is phlogopite mica infused with a high temperature resistant polymer. The infused polymer helps mica heaters to be formable during the manufacturing process. The final heat curing enhances the rigidity and sets the form.

The excellent dielectric strength and high temperature capability make mica heater a perfect choice for both convection and radiant heating. It can replace the traditional mica band heater in applications where installation space is limited.  

Feature Summary

  • mica heater plateWide temperature range from -150°C to 500°C
  • Exceptional heat transfer, quick warming
  • High watt density capability >15 W/cm²
  • Excellent dielectric strength, low leakage
  • Accommodates curved heating surfaces
  • 2D customizable shape, including cutout
  • Can be clamped directly onto the heating surface
  • Even heat distribution
  • Value added options available

Technical Specification

Electrical Thermal Others
Input volatge 12V - 690V  Max Temperature 500°C Min Size 15x30mm
Watt density ≤ 15 W/cm2 Min Temperature -150°C Max Size 600x1000mm
Resistance tolerance ≤ ±5%     Thickness 0.5 - 1.0mm
Dielectric 30KV/mm        
Temperature sensor RTD / pt100, thermistor / NTC, thermocouple, thermal fuse, thermal switch
Installation RTV, mechanical clamping (metal sheath optional, but not necessary)
Circuit design dual input voltage, three phase heater, low inductance design, etc.
Lead wires Teflon, silicone rubber, fiberglass insulated cables, special wire harness available


mica heater

  • Semiconductor processing
  • Packaging, strapping, and sealing equipment
  • Injection molding equipment
  • Commercial food service appliances, convection, hot plate and surfaces
  • Radiators and panel heaters
  • Medical instruments: DNA analysis, disinfection, keeping blood, injections and drips