The CSRF series foil on ceramic current sense chip resistor offers resistance values down to 8 mΩ with TCR of 200 ppm in the 0402 size. The 0603 size offers 5 to 30 mΩ values with a TCR as low as 150 ppm.
The -HP versions of these parts have 0.25 and 0.50 W power ratings, respectively, while standard versions are rated at half that. The resistors are power derated starting at 80°C and 1% or 5% tolerances are available. Example part number: CSRJ0402FT10L0. Prices range from $0.15 to $0.20 ea/10,000.
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