SMD Electrolytic Capacitor Coding
SMD electrolytic capacitors are often marked with their capacitance and working voltage, e.g. 10 6V is 10 µF 6V . Sometimes a code is used instead, which normally consists of a letter and 3 digits. The letter indicates the working voltage and the 3 digits (2 digits and multiplier) give the capacitance in pF.
| Letter | Voltage |
| e | 2.5 |
| G | 4 |
| J | 6.3 |
| A | 10 |
| C | 16 |
| D | 20 |
| E | 25 |
| V | 35 |
| H | 50 |
The band or stripe indicates the positive terminal.
For example, a capacitor marked A475 is a 4.7m F 10V unit.
475 = 47 x 105 pF = 4.7 x 106 pF = 4.7m F