Hammond 197H10 7.5 mH 10 A High Frequency Reactor, Screw Terminals

The Hammond 197H10 is a 197 Series high frequency reactor rated 7.5 mH at 10 A DC, intended for high frequency filtering applications operating from 60 Hz to 10 kHz. It is aimed at power electronics designers, OEM engineers and panel builders who need an inductor with a high self-resonant frequency for AC filter and choke positions.

With 7.5 mH at 10 A DC, the 197H10 is a high-inductance option for 10 A circuits, built in the 6.40 in frame with a 143 mOhm DC resistance.

Typical electrical values from the drawing: inductance with bias of 7.5mH ±15% @ 10ADC, self-resonant frequency of 123.3 kHz, impedance at SRF of 73.38K Ohms, ripple current of 20% peak-to-peak, DC resistance of 143 mOhm ±15% at 20°C, dielectric strength of 2500V RMS and a temperature range of -40 to 105°C.

The reactor is wound on a carbonyl iron powder core, described on the drawing as a high permeability core ideal for applications below 50 kHz, and uses rugged construction with an aluminum base and stainless steel band plus open-style screw terminals for maximum versatility. Size A x B x C is 6.4 in x 6.1 in x 4.38 in (163 mm x 155 mm x 111 mm), with a 5.00 in (127 mm) x 3.50 in (89 mm) mounting hole pattern. The drawing lists the weight as 16.0 lbs, and the shipping weight is 16 lbs (7.26 kg). Dimensional tolerance is ±0.063 in.

The 197H10 is REACH and RoHS compliant and is marked Made in Canada. Performance graphs for inductance versus DC bias current and quality factor were taken at 2.0 volt AC drive; results are typical and subject to normal manufacturing and electrical tolerances. For DC applications the series literature points to the 195-196 Series.