Whether the quotation is reasonable and the processing cost is too high

Quotation comparison is difficult because two figures that look comparable rarely are. One quotation may exclude tooling, another may assume a different surface finish, and a third may be based on a quantity break that will not apply to the real order. The way to judge whether a price is reasonable is to break it into its parts and compare like with like.

What a PCBA quotation is made of

• Component cost against the BOM, including sourcing channel and any approved equivalents.
• Bare board fabrication: layer count, material, copper weight, surface finish and quantity.
• Assembly: stencil and programming setup, SMT and DIP labour, and the number of placement positions.
• Test: fixture cost where one is needed, plus test time per board.
• Packaging, documentation and, where applicable, certification or compliance testing.

How to compare two quotations properly

Fix the BOM revision, the surface finish, the acceptance class and the test specification first. Then check whether each quotation covers tooling and stencil separately or amortises it, whether the component cost is based on the same manufacturer part numbers, and what the stated lead time and minimum order quantity actually are. A lower headline price that omits test coverage or uses a different finish is not cheaper once the omitted items are added back.

Where cost can legitimately come down

Real savings come from design and planning rather than from pressure on the hourly rate. Improving panel utilisation reduces the bare board cost. Replacing an obsolete or single-source part with a pin-to-pin alternative removes a premium. Standardising the surface finish across products reduces setup. Consolidating quantity into fewer builds lowers the per-board setup share. And letting the assembler buy the material turnkey removes the margin stacking of a multi-vendor supply chain.

What to ask for in a quotation

A quotation is only comparable if the scope behind it is stated. Ask for component, board, assembly and test shown as separate lines, for tooling and fixtures identified as included or not, for the surface finish confirmed, and for long-lead parts named with a realistic lead time rather than an optimistic one. A supplier who quotes from an open breakdown can answer those questions without re-pricing the order. More on the drivers is on the PCBA cost page.