Hammond 195C20 1 mH 20 A DC Single Coil Chassis Mount Choke

The 195C20 is a heavy current, chassis mount choke from the 195 Series, a single coil inductor rated 1 mH at 20 A DC. It is built for engineers and integrators designing high current power supply filters, where an open core and coil inductor bolted to a chassis or panel is the practical way to smooth DC output.

At 3.00 in (76 mm) for dimension A and a 3 lb weight, the 195C20 is a compact 1 mH option for 20 A DC filter stages, with Class A insulation and 0.013 ohm DC resistance.

The ordering table lists dimension A at 3.00 in (76 mm), B at 3.06 in (78 mm), C at 2.50 in (64 mm), D at 2.50 in (64 mm) and E at 2.25 in (57 mm), with mounting slots (G) of 0.20 x 0.38 in (5 x 10 mm). Shipping weight is 3 lbs (1.36 kg), and the series table lists 3 lbs. Inductance is measured at the rated D.C. current, and both inductance and resistance carry a 15% tolerance.

Mounting uses a 4-slot bracket, and connections are made to a screw terminal or heavy copper tabs with holes. The 195 Series is hipot tested at 2,500 VAC with a recommended maximum operating voltage of 600 VAC (winding to core), and is rated for operation from -40C to 85C and storage from -40C to 105C. The chokes are UL approved under Type 3AH, E207860, 30V7, and the 195C20 is listed as RoHS and REACH compliant. Class a insulation is listed in the ordering table.

For AC applications from 60 Hz to 10,000 Hz, the manufacturer points to its 197 Series instead.