With a tolerance letter
| Marking | Tolerance | Minimum | Maximum |
|---|---|---|---|
151J | ±5% | 0.000142 µF | 0.000158 µF |
151K | ±10% | 0.000135 µF | 0.000165 µF |
151M | ±20% | 0.00012 µF | 0.00018 µF |
Other ways it's marked
On schematics and parts lists, the same capacitor appears as 150p, 0.15 nF or 0.00015 µF.
Where it's used
Values below 1 nF are typical in radio circuits, oscillators and high-frequency filters, usually as C0G (NP0) ceramic capacitors, which stay stable with temperature.