A prototype is a learning cycle. The goal of the first order is a fast answer, not the lowest price per board.
Hitech Circuits Engineering Desk
Shenzhen, China · PCB fabrication and assembly
2 min read
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Technical review: Process figures checked against our published capability sheet. View capability sheet
Gerbers, drill, stackup, BOM, assembly drawing and test plan. Missing one of these usually costs a day in questions.
Layer count, material, finish, assembly side and test coverage are cheap to decide now and expensive to change later.
Order a small quantity, keep the tooling, and expect a revision. A prototype that is built to learn something is doing its job even if it exposes a design change.
Gerber or ODB++ data, the drill file, the BOM with manufacturer part numbers, the assembly drawing and any test requirements. If impedance or a specific stackup matters, say so in the first message rather than after the boards are made.
Because the same review that catches a 0.05 mm trace error also catches a missing solder-mask opening or a component that cannot be placed. It costs nothing before tooling and a week after.
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