The schematic demands a 4K3 and you've been substituting a 1/4W that's borderline at the voltage you're running. These Jaycar metal film resistors hit the exact value, sit in the same footprint as your standard 1/4W carbon film, and carry double the wattage so the joint stays cool through long test cycles. Eight in the pack means you've got spares for the next iteration without a second run to the shelf. Solder, test, ship it
| brand | Jaycar |
| resistance | 4.3K Ohm (4K3) |
| power_rating | 0.5 W |
| construction | Metal film |
| pack_quantity | 8 |
| size_equivalent | Standard 1/4W carbon film |
| category | Electronics & Components |
| subcategory | Electronic Components |