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April 2020 – API Capacitors Pulsed Power, Plasma and Fusion

Published on: 01/04/2020

Learn more about API Capacitors’ pulse grade and energy discharge capacitors

API Capacitors

API Capacitors is the UK’s leading designer and manufacturer of advanced custom built high voltage capacitors for DC, pulsed and specialist systems. API Capacitors have supplied products to companies all over the world within the transportation, defence, medical, research and industrial industries.

API’s unique technology offers an extensive solutions portfolio which includes extended foil and metallised film electrode and all types of polymer film and paper dielectric designs. These products are either vacuum impregnated, with a variety of dielectric fluids or dry.


API Capacitors Pulsed Power, Plasma and Fusion

API offer a wide range of packaging options, in either polypropylene welded, welded metal or drawn cases. Designed to meet strict requirements, API’s Capacitors feature high peak discharge current, high energy density, low inductance and low series resistance and high reliability.

API’s capacitors are typically used in the following applications: rapid discharge, welding energiser, magnetising equipment, pulse forming networks/impulse generators, radar, plasma and physics research, laser, defibrillator, x-ray equipment and lightning simulators.


Metal Cases

Pulse capacitors provide a wide range of capabilities for high peak current microsecond discharge to a long life, high energy density applications.

  • 1kV to 100kV
  • 2uF to 50,000uF


Plastic Cases

Single and double ended compact pulsed energy storage solutions for high voltage low inductance requirements.

  • 5kV to 100kV
  • 5nF to 2uF


Specialised Cases

Metallised film capacitors in drawn steel cases with peak currents up to 300A for low repetition rate, sub 1Hz, millisecond discharges.

  • 2kV to 3kV
  • 100uF to 195uF


GD Rectifiers has been an authorised distributor for API Capacitors since 2013. GD Rectifiers works closely with API Capacitors on standard and customised capacitor enquiries. GD Rectifiers distributes API’s extensive range of: AC Capacitors, DC Capacitors, Energy Storage Capacitors, Low Temperature Capacitors, Snubber Capacitors, Track Circuit Capacitors, Ultra Low Temperature Capacitors and Custom Designed Capacitors.


For further information on API Capacitors’ product range or to discuss an enquiry, please call GD Rectifiers on: 01444 243 452 or email:


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