What are common PCBA production blockers?
The most common PCBA production blockers are: missing or misaligned CPL file, BOM with no manufacturer part numbers or no approved alternates, Gerbers exported with incorrect layer naming, no IPC class specified, no surface finish specified, and components on allocation or end-of-life. Any one of these will stop a PCBA quote or production release.
Why this becomes hard
PCBA production involves more interdependent file types than most hardware processes. The Gerber, CPL, BOM, schematic, and fabrication notes have to agree. If they were produced at different times during design iteration, they may have diverged without anyone noticing until the supplier flags it.
What teams usually miss
CPL rotation errors. When footprints are non-standard or were manually placed, the rotation values in the centroid file may not match the actual component orientation. This causes mis-placement on the first run and only shows up after soldering. Cross-checking CPL against schematic before submission prevents this.
What KnowYi does
KnowYi runs a pre-submission check across Gerbers, CPL, BOM, and schematic before routing to any PCBA supplier. We flag CPL alignment issues, missing MPN in BOM, surface finish ambiguity, and component availability before the purchase order is placed.
What to send us
Gerbers, CPL, BOM with MPN and quantity, schematic, and your IPC class and surface finish requirements.
If you already have CAD, drawings, BOM, Gerbers, or even an incomplete file package, send it to KnowYi. We can turn it into a clear manufacturing path with missing inputs identified, quote blockers flagged, supplier routing handled, production records maintained, and delivery evidence returned.
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