103: this page's case
- Input
- 103
- Expected output
- 10k
10 × 10³ = 10,000 Ω.
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smd resistor 103
Someone who finds "103" printed on an SMD resistor often reads it as one hundred and three ohms, and is off by a factor of a hundred. The marking below opens with 103 already decoded: it is 10 kΩ, a value widely used in pull-ups and voltage dividers. The tool shows the arithmetic, the tolerance this format usually carries and which standard series contain the value.
10 × 10³ = 10,000 Ω.
10 × 10² = 1,000 Ω.
10 × 10⁴ = 100,000 Ω.
10 × 10⁰ = 10 Ω, not 100 Ω.
22 × 10¹ = 220 Ω.
100 × 10² = 10,000 Ω.
It means 10 kΩ. The first two digits (10) are the value and the third (3) is the power of ten: 10 × 10³ = 10,000 Ω. It is not 103 ohms.
10 kΩ. The digits 10 are the value and the 3 is the exponent: 10 × 10³ = 10,000 Ω. Measured with a multimeter it should land near that, within the part's tolerance.
Yes, 103 is just the 3-digit marking for 10 kΩ. On 4-digit parts the same value appears as 1002.
100 is 10 × 10⁰ = 10 Ω. The last digit is always the power of ten, so 100 is 10 ohms and 101 is 100 ohms.
The marking is reliable when legible, but on burnt or faded boards the value may be wrong. To be sure, lift the part or at least one end of it from the circuit and measure with a multimeter.
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