Double-Sided Universal PCB Prototype Board, 5x7cm, FR4

A universal prototype board (sometimes called perfboard or stripboard, though this specific type has no pre-connected strips) gives a solid, CNC-drilled foundation for soldering a custom circuit together without needing to design and fabricate a dedicated PCB for every one-off project or prototype. This 5x7cm board is built on standard FR4 fiberglass substrate, the same base material used in most commercial PCBs, giving it genuine mechanical rigidity and heat resistance well beyond cheaper cardboard-style perfboard.

Hole spacing follows the standard 0.1 inch (2.54mm) grid, matching the pin spacing of virtually every through-hole component, DIP IC, and standard pin header in common use, so parts drop directly into the holes without needing custom spacing calculations. Being double-sided means both the top and bottom copper layers are usable, with plated-through holes connecting the two sides at each hole location - genuinely useful for more complex circuits needing connections on both faces rather than being limited to single-sided wiring.

Surface finish is HASL (hot air solder leveling), a durable, solderable finish that holds up well to the heat of a soldering iron during assembly and keeps the copper pads from oxidizing in storage. Copper thickness is a standard 1-4oz, with minimum line width and spacing both rated at 6mil, giving reasonable headroom even for somewhat dense manual wiring layouts.

Hobbyists, students, and makers building a one-off custom circuit, prototyping a new project before committing to a dedicated PCB design, or needing a solid soldering surface for a point-to-point wired build will find this 5x7cm FR4 board a practical, inexpensive foundation for that work.