Polypropylene film capacitors; low loss and wide frequency range

February 19, 2017 // By Graham Prophet
Panasonic Automotive & Industrial Systems Europe has a new range of small size metalized polypropylene film capacitors featuring low loss and favourable frequency characteristics for active filter circuits as well as high frequency and high current circuits.

The ECWFE capacitors have been designed with a non-inductive construction using metalized polypropylene film with a flame retardant plastic case and come with a built-in fuse function. Panasonic incubates the moulds for a sufficient time to allow the material to sufficiently cure before vacuum treating the moulds to remove any excess air bubbles.


Available for a rated voltage of 450 VDC with a capacitance range of 0.1 µF up to 4.7 µF or 630 VDC with a capacitance range of 0.1 µF up to 2.2 µF, the ECWFE series components have an operating temperature range from -40°C up to + 105°C, a low hum noise, and are fully RoHS compliant.


Panasonic adds; “The durable outer box construction of the ECWFE series capacitors gives the components the capability of withstanding vibrations better than standard dipped type film capacitors. The built-in fuse functionality allows the ECWFE series to open upon failure rather than short circuit. This suits the parts for power supplies, PFC and other applications where vibrations are a subject of concern.”


Panasonic; https://industrial.panasonic.com/ww/products/capacitors/film-capacitors/film-cap-electroequip/ecwfe