225 capacitor: 2.2 µF (2,200 nF)
A capacitor marked 225 has a capacitance of 2.2 µF. The first two digits (22) are the value in picofarads and the last digit (5) is the number of zeros to add.
225 in every unit
| Picofarads | 2,200,000 pF |
|---|---|
| Nanofarads | 2,200 nF |
| Microfarads | 2.2 µF |
| Farads | 2.2 × 10^-6 |
How to read 225
- Take the first two digits: 22.
- Add 5 zeros: 2,200,000 pF.
- Convert: 2,200,000 pF ÷ 1,000 = 2,200 nF; ÷ 1,000,000 = 2.2 µF.
With tolerance and voltage letters
| Marking | Meaning |
|---|---|
225J | 2.2 µF, ±5% |
225K | 2.2 µF, ±10% |
225M | 2.2 µF, ±20% |
1H225K | 50 V, 2.2 µF, ±10% |
2A225J | 100 V, 2.2 µF, ±5% |
Typical uses
2.2 µF capacitors are used on regulator outputs, for bulk decoupling and audio coupling.
Related codes
FAQ
What is the value of a 225 capacitor?
2.2 µF (2,200 nF): 22 × 10^5 pF = 2,200,000 pF.
What does 225J, 225K or 225M mean?
The letter is the tolerance: J = ±5%, K = ±10%, M = ±20%. The value is still 2.2 µF.
Can I replace a 225 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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