Advanced High Energy Capacitors

High-energy Density Capacitors

TRS high energy DC capacitors use antiferroelectric ceramics with a high switching field. This allows for greatly increased energy storage in pulsed power and transient voltage suppression applications.

Benefits of Anti-ferroelectric Capacitors

• Higher volumetric efficiency than linear/paraelectric and ferroelectric dielectrics
• Low equivalent series resistance (ESR) and inductance (ESL)
• Nonlinear antiferroelectric/ferroelectric phase change greatly increases energy storage

Dielectric displacement-electric field behaviors for various dielectrics. The shaded area indicates the amount of energy recoverable upon discharging.

Typical Commercial Uses

• Pulsed power
• Pulse forming networks
• Capacitive discharge units
• Transient voltage suppression
• Detonators
• Magnetization/demagnetization devices
• Plasma generators
• Flash lamps
• Power electronics, etc.
  

Performance Characteristics

Stored energy density vs. applied voltage per active volume of multilayer capacitors (left) and capacitance change vs. applied voltage (right). Both are calculated from polarization curves.

High Energy Capacitor Specifications

Type A B C D Zero Field Capacitance (nF)  103 141 306 440 Breakdown Voltage (V) 1276 1102 783 760 Optimum Bias Voltage (V) 1044 858 658 252 Energy Density per Active Area (J/cc) 5.2 4.9 2.7 1.8 Energy Density per Total Volume (J/cc @ V) 3.1 (1015) 3.0 (870) 1.6 (638) 1.0 (348)

Energy densities per total volume measured by discharging multilayer capacitors into 1 kohm resistive load.