Hammond 197A25 0.48mH 25A High Frequency Reactor, Screw Terminals

The 197A25 is a high frequency reactor rated 0.48 mH at 25 A DC with screw terminals. It is made for high frequency filtering applications operating from 60 Hz to 10 kHz, with a high self-resonant frequency value.

The drawing specifies typical inductance with bias of 0.48 mH ±15% at 25 ADC, a self-resonant frequency of 504.0 kHz with 7.76K ohms impedance at SRF, ripple current of 20% peak-to-peak, and DCR of 11 mOhm ±15% at 20°C. Dielectric strength is 2500 V RMS and the temperature range is -40 to 105C. The high permeability carbonyl iron powder core is described as ideal for applications below 50 kHz.

Construction is rugged, with an aluminum base, stainless steel band and open-style terminals. Size is 4.50 x 3.95 x 3.12 in (114 x 100 x 79 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.