You're routing a high-voltage line and need a cap that won't arc or degrade. This is it. 10nF at a full 3kVDC working voltage. Ceramic dielectric, non-polarised, fixed-value – no orientation headaches, no electrolyte to dry out. Built from alternating ceramic and metal electrode layers, so the composition does the electrical heavy lifting for you. Jaycar RC5380. Solder it in, power up, move on
| brand | JAYCAR |
| capacitance | 10nF |
| voltage_rating | 3kVDC |
| dielectric_type | Ceramic |
| polarity | Non-polarised |
| construction | Alternating ceramic and metal electrode layers |
| application | General purpose, high voltage |
| sku | RC5380 |