PCB Assembly (PCBA)
Practical PCB assembly guides covering quotation files, BOMs, placement data, approval stages and assembly planning.
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BGA and QFN Voiding: What X-Ray Results Actually Mean
How to interpret BGA and QFN X-ray voiding without relying on a misleading universal percentage, and how to define a production acceptance plan.
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Mixed SMT and Through-Hole Assembly: How Process Sequence Affects Quality
How process order, thermal exposure, component access and soldering method shape the quality of mixed SMT and through-hole assemblies.
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PCBA Panel Design: Rails, Fiducials, Tooling Holes and Breakaway Methods
A practical PCBA panel-design guide covering rails, fiducials, tooling holes, V-score, tab routing, depanelization stress and release data.
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Ionic Contamination: Why a Visually Clean PCBA May Still Carry Reliability Risk
Learn how invisible ionic residues can cause leakage, corrosion and electrochemical migration, and how to build risk-based PCBA cleanliness controls.
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First Article PCBA Approval: What Should Be Checked Before Mass Assembly?
A practical first-article PCBA approval checklist covering revision control, placement, soldering, traceability, programming, test and release decisions.
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Stencil Design for Fine-Pitch, QFN and BGA Assembly: A Practical DFM Guide
A practical guide to stencil thickness, aperture area ratio, QFN window patterns, BGA paste release and mixed-volume assembly requirements.
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What Files Are Required for a PCB Assembly Quotation?
Prepare a consistent Gerber, BOM and placement package, define the assembly scope and learn how to start with incomplete files.