Film Capacitors

Custom Electronics is now your source for high quality metallized polypropylene capacitors for the Power Electronics industry.  There is a wide range of values depending on the application and temperature ratings as high as 105°C.

Typical Capacitor Designs

  • High Current
  • High Voltage
  • DC Link
  • AC Designs

Typical Applications

  • Solar and Wind Power Inverters
  • Electric Vehicles
  • Motor Drives
  • Welders
  • Uninterruptible Power Supplies (UPS)
  • Induction Heating
Metallized Polypropylene Film CapacitorsStandard products as well as customized designs are available with fast turn-around times.

Quality Assurance

CEI maintains an AS9100 / ISO 9001 Quality System.  Our dedication to quality is a prime reason for our success in the high-voltage industry. Each step in the production process begins and ends in the quality department. From grading our mica paper to final inspection, we are dedicated to high-quality standards.  Since product quality and reliability is of the highest importance, we have ensured that our engineering and manufacturing procedures conform to the following commercial and military specifications as applicable:

  •  ANSI/NCSL Z540-1 (Formerly MIL-C-45662)
  •  J-STD-001
  •  IPC-A-610
  •  ANSI/ESD S20.20


At CEI, we realize that the relationships forged with our suppliers are key in our ability to meet customer needs and expectations.  As such, CEI utilizes a flow-down of supplier requirements QD0004 that is applicable to every purchase order.

Supplier Q.A. Requirements Form


Custom Electronics, Inc. (CEI) is working to become compliant with HR4173 (the Dodd-Frank Act), specifically with regard to section 1502 – Conflict Minerals. Conflict Minerals are defined as tantalum (Ta), tin (Sn), tungsten (W), or gold (Au), often referred to as “3TG”, originating in the Democratic Republic of the Congo (DRC) or surrounding countries. CEI’s policy is to request “Conflict Free” Mineral declarations from its suppliers (see Supplier Letter below). In the event that a mineral is not “Conflict Free”, CEI will perform a corrective action by enforcing that the mineral be obtained from a “Conflict-Free” source.

Supplier Conflict Minerals Letter