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Three figures on an SMT resistor indicate the value -- first sig digit, second sig digit, power of 10 multiplier -- of a 5% device.
Four figures on an SMT resistor indicate the value -- first sig digit, second sig digit, third sig digit, power of 10 multiplier -- of a 1% device.
The letter "R" is a decimal point indicator for low values, e.g., 1R8 for 1.8 ohms, 49R9 for 49.9 ohms (1%).
However, I'm no SMT guru, so resistors with better than 1% tolerance? Don't know.
10B? Dunno, either. What does your ohmmeter say about this part? That's the first step in analyzing a part with an unknown value.
Oops. Went by the text in the OP and didn't check the pics. Measure the thing with an ohmmeter and see if there's low resistance or an open. If open, I'd suspect a cap, value of 0.01µF. However, in most cases it would be marked as "104".
01S
The 01B is 1kΩ
So is the one labelled 102
They use different marking schemes.
The tolerance isn't marked. You have to guess. However, 1% ones aren't expensive.
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