Advanced High Temperature Capacitors

Next Generation High Temperature Capacitors

TRS high temperature capacitors are based on a unique relaxor ferroelectric with high volumetric efficiency. The temperature characteristics of the dielectric can be engineered to suit the specific requirements of an application, with operating temperatures ranging from 150°C to over 450°C.

High temperature capacitors

Typical Commercial Uses

  • Deep-well oil exploration
  • Automotive electronics
  • Motor controllers
  • Power inverters
  • Pulsed power
  • Power electronics
  • Scientific instrumentation, etc.

Performance Characteristics

HT-300 and HT-460 performance characteristics

Several dielectric formulations have been developed to provide high dielectric constant (K) performance centered around operating temperatures of 300°C (HT-300, left) and 450°C (HT-460, right). These materials have been developed for characteristics similar to Y5V except that the operating temperature is shifted from 10-40°C to 150-350°C or 300-500°C.

HT dielectric performance chart

The HT dielectrics have outstanding high-temperature dielectric properties. Near the operating temperature, HT-300 capacitors are designed with a 4x voltage safety margin, have RC constants of 11Ω-F, ~30% change in capacitance at the rated voltage, and limited frequency dependence. Cap. values up to ~2μF are available.

High Temperature Capacitor Specifications

Operating Temperature (°C)
 300 (±50)
460 (±50)
Rated Voltage, max. (V)
Breakdown Voltage (V)
Nominal Capacitance @ 1 kHz (μF)
Nominal Dielectric Loss @ 1 kHz (%)
C/C0V @ Rated Voltage and Temp.
IR @ 100nF, rated volt. and temp. (Ω-F)
*Estimated: ΔC(-55/+200°C) ~ -20% / +66%
**Reverse voltage limited to approx. -125V

Wide Temperature Dependence Capacitors

WT-1 Dielectric data plot

Typical temperature dependence of TRS' wide temperature dependence capacitors:

  • WT-1 dielectric is ~X7R with a capacitance change of -15% at -55°C and +66% at 200°C operation can be extended to 300°C with capacitance variation +161%.

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TRS Technologies, Inc.
2820 E. College Avenue, Suite J
State College, PA 16801 USA
phone: 814/238-7485
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©2014 TRS Technologies, Inc. - The information presented on this site has been carefully checked for accuracy and is believed to be correct and current.
TRS assumes no responsibility for the correctness of this information, nor for damages consequent to its use.
All specifications, tolerances, and the like are subject to change without notice.