A custom PCB (custom printed circuit board) is a board manufactured to meet specific electrical, mechanical, and reliability requirements beyond standard specifications. Instead of choosing a “one-size-fits-all” build, a custom PCB lets you define key parameters, including base material, layer count, stackup, board thickness, copper weight, surface finish, solder mask, and any special construction notes for your product.

Custom PCB fabrication is commonly used when designs must meet tight performance targets, fit into constrained enclosures, handle higher current or heat, or maintain stable performance in demanding environments. It’s also the best option for projects that require controlled impedance, specialized laminates, edge features, or other build details that directly affect function and long-term reliability.

Typical applications for custom printed circuit boards include industrial controls, medical electronics, communications hardware, power and energy systems, automotive electronics, and other products where design requirements vary, and consistent build quality is critical. With the right material and process controls, custom PCBs help improve yield, reduce field failures, and support a smoother transition from prototype to production.