You've got a circuit to prototype and you need a blank board that actually holds up. This 300 × 300mm single-sided board is FR4 substrate (TG130, UL94VO rated) with a 0.035mm electrodeposited copper layer on one side. Total thickness 1.61mm — thick enough to etch, drill and solder without flexing out of shape. Cut it to size for your layout or use the full square for a larger build. If you need double-sided or a smaller footprint, the HP9512 (150 × 150) and HP9514 (150 × 75) are in the same range
| brand | Jaycar |
| sku | HP9510 |
| dimensions | 300 x 300mm |
| sidedness | Single-sided |
| substrate | FR4, TG130, UL94VO |
| copper_thickness | 0.035mm |
| copper_type | Electrodeposited (ED) |
| substrate_thickness | 1.575mm (62thou) |
| total_thickness | 1.61mm |
| copper_weight | 1oz |