224 capacitor: 220 nF (0.22 µF)
A capacitor marked 224 has a capacitance of 220 nF. The first two digits (22) are the value in picofarads and the last digit (4) is the number of zeros to add.
224 in every unit
| Picofarads | 220,000 pF |
|---|---|
| Nanofarads | 220 nF |
| Microfarads | 0.22 µF |
| Farads | 2.2 × 10^-7 |
How to read 224
- Take the first two digits: 22.
- Add 4 zeros: 220,000 pF.
- Convert: 220,000 pF ÷ 1,000 = 220 nF; ÷ 1,000,000 = 0.22 µF.
With tolerance and voltage letters
| Marking | Meaning |
|---|---|
224J | 220 nF, ±5% |
224K | 220 nF, ±10% |
224M | 220 nF, ±20% |
1H224K | 50 V, 220 nF, ±10% |
2A224J | 100 V, 220 nF, ±5% |
Typical uses
220 nF capacitors are used for decoupling, audio coupling and as X-class mains suppression capacitors.
Reactance at 50 Hz–10 MHz, RC time constants and how 220 nF is marked in other notations: 220 nF capacitor reference.
Related codes
FAQ
What is the value of a 224 capacitor?
220 nF (0.22 µF): 22 × 10^4 pF = 220,000 pF.
What does 224J, 224K or 224M mean?
The letter is the tolerance: J = ±5%, K = ±10%, M = ±20%. The value is still 220 nF.
Can I replace a 224 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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