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Providing design engineers with a rugged surface mount current-sense device capable of handling high current loads, TT electronics IRC Wirewound and Film Technologies Division has developed a low resistance (< 2 mΩ), surface mount metal strip resistor rated for 45 A of current at 1 W while exhibiting low inductance and low TCRs. Designated the CSS series, the resistor is offered in a two-terminal design and a four-terminal Kelvin design. Rated for a full 1 W at 70° C, the resistors feature resistance values as low as 0.0005 to 0.003Ω, in tolerances of 1%, 3%, and 5%, with TCRs as low as ± 20 ppm/° C. They are rated for operation from 㫀° C to +125° C. Inductance values of < 0.1 nH at 100 kHz and 300 kHz and continued stability beyond 300 MHz make the series suitable for high speed computer power supply applications.

TT electronics IRC

TT electronics IRC
Wirewound and Film Technologies Division
736 Green Way Rd., P.O. Box 1860
Boone, NC, 28607