Passives

Four terminal current sense resistors offer high accuracy

29th March 2021
Alex Lynn

Current sensing for high efficiency can be done easily and economically using current sense resistors. As resistance values are reduced, the measurement error due to lead resistance becomes more of a problem. For applications desiring high efficiency with the best possible temperature accuracy, four terminal current sensing products are a good choice.

Stackpole’s HCSK series is available in sizes from 1216, 2725 and 4026, in power ratings from two to five watts and resistance values from 0.5 to 5 milliohm. With a TCR of 50ppm combined with the four-terminal connection, the HCSK provides sensing output with very low temperature measurement error.

Stackpole's CSSK series is now available in the 3637 size in addition to the 0612 size previously offered. With power ratings of 3W and 1W respectively, and resistance values from 0.5 to 5 milliohm, the CSSK is also an ideal choice for precision current sensing.

Applications for the HCSK and CSSK include power modules, frequency converters, home appliances, solid state power supplies, hybrid power control and automotive power and control.

Pricing will vary depending on size and ranges from $0.25 to $0.50 each in full reel quantities.

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