With a tolerance letter
| Marking | Tolerance | Minimum | Maximum |
|---|---|---|---|
683J | ±5% | 0.0646 µF | 0.0714 µF |
683K | ±10% | 0.0612 µF | 0.0748 µF |
683M | ±20% | 0.0544 µF | 0.0816 µF |
Other ways it's marked
On schematics and parts lists, the same capacitor appears as 68n, 68 nF or 0.068 µF.
Where it's used
Values from 1 nF to 1 µF are used for filtering, timing and signal coupling. Ceramic X7R capacitors and film capacitors are the usual choice.