Patent ID: 6919780

Claim:
An improved, in-line EMI filter for direct and low frequency alternating current applications comprising: a ground plane housing of not more than 0.7 inches diameter suitable for bulkhead and through-hole mounting with center feed terminations on each end thereof, at least one discoidal capacitor element configured with a NPO/COG dielectric, a current rating of at least 1 ampere, a voltage rating of at least 125 VAC at 400 Hertz and 200 VDC, a dissipation factor of less than 0.1 with an applied voltage of 125 VAC at 400 Hertz, a capacitance change versus temperature characteristic of less than 1% over a temperature range of −55 to +125 Centigrade, and an internally generated heat rise characteristic at 400 hertz and 125 VAC in a +125 operating environment of less than 10 degrees Centigrade.