What does 0.025R or 30R mean here?

On a schematic I have, some resistors read as R16, 0.025R, 3W. Some read as R60, 33R. I guessed that R16 or R60 are the labels, and 3W is the power. But what does 0.025R or 30R mean? Google search did not help much. Thanks.

1 Answer

In this context "R" means $\Omega$.

It really just substitutes for the decimal point and tells you the multiplier. You'll also see inductors marked 1R0 for 1.0$\mu$H, and resistances given as 4K7 or 10K0 for 4700$\Omega$ and 10,000 $\Omega$.

So the resistor with ID R16 is a 0.025 Ohm resistor and the resistor with ID R60 is a 33 Ohm resistor.

• Some other resistors read as 33K. Are they 33 kOhms? – Adeel Apr 22 '15 at 14:41
• Yes, they are 33K ohms. – Spehro Pefhany Apr 22 '15 at 14:42
• @Chu If it starts with "R" in this context, that is the reference designator. This is generally why the value of the resistors don't contain "R"s. – ACD Apr 22 '15 at 15:57
• R60 is 33 ohms, yes? – EM Fields Apr 22 '15 at 17:51
• @EMFields Yes, thanks, some weird editing there- no doubt my fault. – Spehro Pefhany Apr 22 '15 at 17:55