You're rebuilding a mains-derived supply or a high-voltage filter stage and the old cap is toast. You need something that'll hold at 450 VDC without flinching. This Jaycar 4.7 microfarad electrolytic, RB PC mount, does exactly that. It sits in your circuit, soaks up the ripple, and smooths the output so the rest of the board stops seeing a bumpy rail. Polarised – stripe goes to the negative side. Solder it in, power up, sorted
| brand | JAYCAR |
| capacitance | 4.7 uF |
| max_voltage | 450 VDC |
| mounting | RB – PC Mount |
| ripple_current | 48 mA |
| type | Electrolytic (polarised) |
| category | ELECTRONICS & COMPONENTS |
| subcategory | ELECTRONIC COMPONENTS |