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High Temperature EMI Filters

These high-temperature, resin-sealed, bolt-in style, feedthrough EMI filters are capable of continuous operation at 175°C with an average coefficient of -25% at maximum operating temperature. This bulkhead mount EMI filters are ideal for oil and gas applications, engine controls, heavy industrial sensors, and power conversion and generation.

APITech also offers a line of Large Diameter Solder-In High Temperature EMI Filters with glass sealed end, providing protection from hostile environments and maintain hermeticity.

  • Consistent operating properties from -55 to +175°C
  • Meet applicable requirements of MIL-PRF-15733, including mechanical shock, vibration and 1000 hour life testing at +175°C
  • Temperature coefficient at +175°C is ±25%
  • Capacitance and voltage rating can be configured to meet customer requirements
  • Available in the same performance range as APITech’s existing EMI filter offerings, which allow convenient drop-in replacement for existing designs that now require higher temperature performance
  • RoHS compliant
  • Downhole oil and gas
  • Engine controls - jet or reciprocating engines
  • Heavy industrial sensors
  • Power conversion and generation
High Temperature EMI Filter Specifications
Lead Finish Silver
Bushing Finish Silver
Circuit Feedthrough
Capacitance Up tp 1µf
Temperature Range -55°C to +175°C
Current Range Up to 25 Amps
Working Voltage Up to 500 VDC