SMD Resistor Code Lookup

Three digits, four digits, or a cryptic two-digits-and-a-letter. Whatever is printed on the little black brick, type it in.

Code on the part

code

Three systems on one package

Three digits read like the classic resistor code: two digits and a zero count, so 472 is 4700 Ω. Four digits mean a 1% part: three digits and the zero count, so 4702 is 47 kΩ. And two digits plus a letter is EIA-96, where the digits index a table of values and the letter is the multiplier: 01C is 10 kΩ. This tool speaks all three.

When there's an R

An R is a decimal point. 4R7 is 4.7 Ω, R047 is 0.047 Ω, the kind of value you meet in current-sense resistors. And a plain 0? That's a zero-ohm resistor, a wire dressed up as a component so the pick-and-place machine can install it.