Current sense resistors are non-inductive

The MR series of through-hole current sensing resistors feature an inherently non-inductive metal element and resistance values down to 5 mΩ. The resistors TCR is 50 to 400 ppm/ºC and tolerance is 1 or 5%.

The series comes in 1, 3, 5, and 10 W versions, de-rated above 25ºC. The 1 W version is 0.385 inches long, with a 0.135 inch diameter. Operating temperature range is up to 275ºC and the molded element allows for replacement where conformal coated wirewounds have difficulty with fast switching. From $0.34 to $0.91 each in full reel quantities.