Capacitor Code Decoder
Decode ceramic capacitor markings (3-digit code)
104
Capacitance
100 nF
100,000 pF
100 nF
0.1 µF
±10%
Find Code from Value
Enter a capacitance value to find the 3-digit code
Common Capacitor Values
How to Read Capacitor Codes
The 3-digit code on ceramic capacitors represents the value in picofarads (pF):
- First two digits: Significant figures
- Third digit: Multiplier (number of zeros to add)
For example, 104 means 10 × 104 = 100,000 pF = 100 nF = 0.1 µF
Special Cases
Multiplier 8 or 9: These are rare and indicate 0.01 and 0.1 multipliers respectively.
For example, 159 = 15 × 0.1 = 1.5 pF
Two-digit codes: Very small values may use just two digits, representing pF directly.
For example, 47 = 47 pF
Tolerance Codes
| Code | Tolerance | Notes |
|---|---|---|
| B | ±0.1 pF | Very tight, for small values |
| C | ±0.25 pF | Tight, for small values |
| D | ±0.5 pF | For small values |
| F | ±1% | Precision |
| G | ±2% | Precision |
| J | ±5% | Common for quality caps |
| K | ±10% | Most common |
| M | ±20% | Standard |
| Z | +80% / -20% | For electrolytics |