Polypropylene film capacitors; low loss and wide frequency range
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
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