Hammond 197B20 0.8mH 20A High Frequency Reactor, Screw Terminals

The 197B20 is a high frequency reactor rated 0.8 mH at 20 A DC with screw terminals, built for high frequency filtering applications from 60 Hz to 10 kHz where a 20 A current and higher inductance are both required.

The drawing lists typical inductance with bias of 0.80 mH ±15% at 20 ADC, a self-resonant frequency of 333.0 kHz, impedance at SRF of 12.37K ohms, ripple current of 20% peak-to-peak and DCR of 23 mOhm ±15% at 20°C. Dielectric strength is 2500 V RMS and temperature range -40 to 105C. The high permeability carbonyl iron powder core is described as ideal for applications below 50 kHz.

The 197B20 has rugged construction with an aluminum base, stainless steel band and open-style terminals. Size is 3.86 x 4.50 x 3.37 in (98 x 114 x 86 mm) with a 4.00 x 2.75 in (102 x 70 mm) mounting hole pattern, and dimensional tolerance is ±0.063 in. It weighs 6 lbs (2.72 kg). The label marks Made in Canada, and the part is RoHS and REACH compliant.

Performance graphs on the drawing were taken at 1.0 V AC drive; results are typical and subject to normal manufacturing and electrical tolerances. For DC applications, the manufacturer points to the 195-196 Series.