Hammond 197C5 1.25 mH 5 A High Frequency Reactor, Wire Leads

The Hammond 197C5 is a 197 Series high frequency reactor rated 1.25 mH at 5 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.

Rated 1.25 mH at 5 A with a 126 mOhm DC resistance, it is packaged in a universal channel frame with insulated flexible leads rather than screw terminals.

Typical electrical values from the drawing: inductance with bias of 1.25mH ±15% @ 5ADC, self-resonant frequency of 314.9 kHz, impedance at SRF of 17.79K Ohms, ripple current of 20% peak-to-peak, DC resistance of 126 mOhm ±15% at 20°C, dielectric strength of 2000V RMS and a temperature range of -40 to 105°C.

Construction uses a carbonyl iron powder core, described on the drawing as a high permeability core ideal for applications below 50 kHz, in a universal channel frame package for maximum mounting versatility. Insulated flexible leads exit the part, and all leads are a minimum of 6 in long. Size A x B x C is 2 in x 3.25 in x 1.6 in (51 mm x 83 mm x 41 mm) with a 2.81 in (71 mm) mounting hole pattern; the drawing lists the weight as 14 oz., and the shipping weight is 0.86 lbs (0.39 kg). Dimensional tolerance is ±0.063 in unless otherwise specified.

The 197C5 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 1.0 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.