Semiconductors and capacitors for power electronics

(Semiconductor) devices for high current and voltage loads

Semiconductors play an important role in electrical engineering. Their conductivity may depend on the current flow direction or a control signal. Diodes are used to rectify alternating currents for smaller power outputs. If output needs to be regulated – to dim lights, for example – controllable elements such as a thyristorIGBT or MOSFET are used. 

Since ceramic capacitors and conventional electrolytic capacitors often do not meet high electrical requirements, power electronics use ultracapacitors as power storage, snap-in or screw-connected electrolytic capacitors and film capacitors.

Select your product

IGBT modules
  • Voltage-proof up to 3,300 V
  • Switching currents up to 3,600 A
MOSFET modules
  • Voltage-proof up to 200 V
  • Switching currents up to 1600 A
SIC modules
  • Voltage-proof up to 1,700 V
  • Switching currents up to 300 A
SiC MOSFETs and SiC Schottky MPS - discretes and chips
  • Voltage-proof up to 3300 V


  • Voltage-proof up to 7,200 V
  • Switching currents up to 18,000 A


  • dielectric strength up to 3.0 V/403 V
  • Capacities up to 3,400 F/500 F @ 16.2 V
Plastic film capacitors for power electronics
  • Snubber networks
  • Link capacitors
  • Filter capacitors (2- and 3-phase)
  • AC motors
  • Lamps
Aluminum electrolytic capacitors for power electronics
  • Snap-in aluminum electrolytic capacitors
  • Aluminum electrolytic capacitors with screwed connection

Semiconductors are heat conductors

Semiconductors are what is known as heat conductors; this means that their conductivity depends on the temperature. The higher the temperature, the better their conductivity. Semiconductors are electrically isolating at absolute zero.