331 capacitor: 330 pF
A capacitor marked 331 has a capacitance of 330 pF. The first two digits (33) are the value in picofarads and the last digit (1) is the number of zeros to add.
331 in every unit
| Picofarads | 330 pF |
|---|---|
| Nanofarads | 0.33 nF |
| Microfarads | 0.00033 µF |
| Farads | 3.3 × 10^-10 |
How to read 331
- Take the first two digits: 33.
- Add 1 zero: 330 pF.
- Convert: 330 pF ÷ 1,000 = 0.33 nF; ÷ 1,000,000 = 0.00033 µF.
With tolerance and voltage letters
| Marking | Meaning |
|---|---|
331J | 330 pF, ±5% |
331K | 330 pF, ±10% |
331M | 330 pF, ±20% |
1H331K | 50 V, 330 pF, ±10% |
2A331J | 100 V, 330 pF, ±5% |
Typical uses
330 pF capacitors are used in filters, feedback compensation and RF circuits.
Related codes
FAQ
What is the value of a 331 capacitor?
330 pF: 33 × 10^1 pF = 330 pF.
What does 331J, 331K or 331M mean?
The letter is the tolerance: J = ±5%, K = ±10%, M = ±20%. The value is still 330 pF.
Can I replace a 331 capacitor with a different type?
Usually, if the capacitance, voltage rating and temperature characteristic are at least as good. Check the rated voltage, and remember ceramic capacitors lose capacitance at high DC voltage.
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