Link capacitors

DC link capacitors in intermediate circuits

The reactive power or harmonic components need to be restricted above a power input of 75 W in products which are powered directly from the mains (230 V). This is often achieved through active PFC (power factor correction). This is upstream from the switched-mode power supply itself and generates a sinus current with very low phase change from pulsed currents from digital power supplies. A capacitor is needed between the PFC and the power supply to provide the most stable voltage possible to the power supply. DC link capacitors are optimized for this task, offer a very low ESR and ESL, and are self-healing.

DC-Link-Capacitors

Series Features Applications Case type Terminal type Rated voltage range Storage temperature range
C3D ● Metallized polypropylene structure.
● Excellent electric property.
● Plastic case (UL94 V-0), Filled with resin.
● High performance DC filtering applications
(i.e. Frequency converters, Industrial and high-end power supplies and Solar inverters)
Box Radial 500 Vdc to 1200 Vdc -40°C ~ 105°C
C3D(R) ● Slim line, low building height, Segmented metallized-film design
● High ripple current capability, low ESR, low ESL
● Metallized polypropylene film structure
● Plastic case(UL94 V-0),Filled with Flame retardant epoxy resin
● Self-healing property
● High performance DC filtering applications (Frequency converters; PV micro inverters; LED street lighting; Industrial and high-end power supplies; On board chargers (EV/HEV)) Box Radial 500 Vdc to 1200 Vdc -40°C ~ 105°C
C3A  ● Used in DC-Link circuits,Can replace electrolytic capacitor
● Low ESR, high ripple current handling capabilities
● Low Ls
● Self-healing property
● Long lifetime
● Plastic case,Filled with resin
● Transportation: EV or HEV
● Welders,Elevators,Motor Driver systems
Plastic case Screw type 450 Vdc to 900 Vdc -40°C ~ 105°C
C3A (G) ● Used in DC-Link circuits,Can replace electrolytic capacitor
● Low ESR, high ripple current handling capabilities
● Low Ls
● Self-healing property
● Long lifetime
● Plastic case,Filled with resin
● Used in inverters of wind power and solar power
● Welders,Elevators,Motor Driver systems
Plastic case Screw type 600 Vdc to 1500 Vdc -40°C ~ 85°C
C3B ● Used in DC-Link circuits, Can replace electrolytic capacitor
● Low ESR, high ripple current handling capabilities
● Low Ls
● Self-healing property
● Long lifetime
● Aluminum case,Filled with resin
● Used in inverters of wind power and solar power
● Transportation: EV or HEV
● Welders,Elevators,Motor Driver systems
Aluminium case Screw type 600 Vdc to 4000 Vdc -40°C ~ 85°C
C3B
(miniature Version)

● Used in DC-Link circuits, Can replace electrolytic capacitor
● Low ESR, high ripple current handling capabilities
● Low Ls
● Self-healing property
● Long lifetime
● Aluminum case,Filled with resin

● Used in inverters of 
● Welders, Elevators, Motor Driver systems
Aluminium case Screw type 600 Vdc to 1500 Vdc -40°C ~ 85°C
C36 ● Customized series                                                                        ● Used in DC-Link circuits,Can replace electrolytic capacitor
● Low ESR, high ripple current handling capabilities
● Low Ls
● Self-healing property
● Long lifetime
● Filled with resin
● Transportation: EV or HEV Plastic case Busbar According to customer requirements -40℃~105℃
C3N ● Customized series                                                                          ● Used in DC-Link circuits,Can replace electrolytic capacitor
● Low ESR, high ripple current handling capabilities
● Low ESL
● Self-healing property
● Long lifetime
● Filled with resin
● Used in inverters of wind power and solar power
● Transportation
● Welders, Elevators, Motor Driver systems
Stainless steel case Busbar According to customer requirements -40°C ~ 85°C
C3E ● Stainless steel case, Epoxy resin sealing
● Dry construction, No leaking fluids
● Self-healing property, Segmented metalized-film design
● Low ESL & Low ESR
● High rms current capability
● DC-Link
● Speed inverter (drives and traction)
● Wind power converter
● Substation
Stainless steel case Thread hole / Thread stud 2000 Vdc to 6000 Vdc -40°C ~ 70°C
C3L ● Plastic case, Dry construction
● Low ESR, high ripple current ability
● Low ESL
● Long life
● Used to replace electrolytic capacitor in DC-Link circuits
● Used in small and medium power solar inverter
● Used in welding instuments, central air-conditioning inverter, commercial air-conditioning inverter, elevator driver, industrial motor driver
Plastic case Wire or Lug terminals 500 Vdc to 1500 Vdc -40°C ~ 85°C

Film capacitor manufacturers