Andrew ZonenbergAug 10, 2024

Does anyone have data on actual current capacities / resistances of "0 ohm" SMT resistors?

I'm not seeing tolerances or maximum resistances specified, only a power rating, which makes it hard to figure out how much juice I'll lose if I use one as a jumper for a power net.

Show threadGraham Sutherland / PolynomialAug 10, 2024
@azonenberg if you look in the product catalogue for that series of parts you may find that they have a footnote that specifies the maximum resistance of 0R parts. (ordinarily the x% tolerance usually means "look for the 0R max resistance in the x% section of the product catalogue / datasheet")
Show threadGraham Sutherland / PolynomialAug 10, 2024

@azonenberg 0805 is about the smallest I'd go for 2A continuous.

as an example, here's Uni-Royal's speclist for jumpers:

Show threadGraham Sutherland / PolynomialAug 10, 2024
@azonenberg (whoops sorry this was supposed to be in response to your reply)
Show threadGraham Sutherland / Polynomial
@azonenberg for low voltage power path stuff it may well be worth spec'ing a shunt resistor since you then have a known exact resistance, and can calculate the drop and thermals.
Aug 10, 2024 at 8:14amWeb