engineering checklist

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This tag groups PCBA manufacturing, engineering review, testing, traceability and supplier evaluation content related to engineering checklist.

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DFM File Checklist Before Submitting a PCBA RFQ

Preparing Gerber, BOM, centroid, test requirements and special process notes before RFQ reduces back-and-forth communication and quotation assumptions.

What Validation Should a BOM Alternate Approval Flow Include

BOM alternate approval cannot rely only on package and price; electrical, thermal, software, test and customer-controlled requirements must be validated.

SMT Process Window Basics: From SPI to Reflow Profile

An SMT process window should be judged by solder paste, stencil, placement, reflow, AOI and X-ray data, not final yield alone.

How to Judge Whether ICT/FCT Test Coverage Is Enough

ICT and FCT cover different failure modes; buyers and engineers should review the test matrix instead of only asking whether testing is 100 percent.

Which Fields Should a MES Traceability Report Include

A useful MES traceability report should connect serial number, material lot, process parameters, test results, repair records and shipment lot.

How to Write BGA X-ray Inspection Criteria into PCBA Requirements

For BGA, QFN and LGA hidden-joint components, PCBA requirements should define X-ray scope, criteria, sampling level and reinspection rules early.

Conformal Coating Process Control Is More Than Material Selection

Conformal coating reliability depends on cleanliness, masking, thickness, curing, visual inspection and rework rules, not only material brand.

PCBA Pilot Run Acceptance Checklist: When Is Production Ready

Pilot acceptance should review DFM closure, BOM risk, SMT process, test coverage, defect trend and delivery data, not only whether samples power on.

15 Engineering Questions to Ask When Evaluating a PCBA Supplier

When evaluating a PCBA supplier, questions should cover DFM, BOM, SMT, testing, traceability, issue closure and delivery communication, not quotation only.

PCBA RFQ File Preparation Guide: BOM, Gerber and Test Specification

A clear RFQ package should include BOM, Gerber, centroid, schematic, test specification, annual volume, delivery target and special process notes.