What does a PCBA DFM review check?
A PCBA DFM review checks whether the board and assembly data can be manufactured consistently. Typical checks include footprint and pad geometry, component spac…
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8 questions
Should DFM review happen before or after quotation?
Before quotation whenever practical. An initial DFM review can expose design risks that affect cost, tooling, yield or lead time before the production route is…
Read answer →What happens when an engineering issue is found?
The issue should be documented and returned for customer approval, clarification or design correction before affected production steps proceed. EBest PCBA does…
Read answer →What are the most common PCB DFM problems?
Common PCB DFM findings include insufficient annular ring, narrow solder-mask dams, copper too close to the edge, conflicting drill data, unclear board outline,…
Read answer →What are the most common PCBA DFM problems?
Frequent PCBA risks include incorrect footprints, polarity conflicts, missing DNP information, poor component-to-edge clearance, inadequate fiducials, unsuitabl…
Read answer →What is an engineering question or EQ from a PCB manufacturer?
An engineering question is a controlled request to resolve information that is missing, conflicting or outside the agreed production rule. It may concern stack-…
Read answer →Can DFM reduce PCB and PCBA cost?
DFM can reduce avoidable cost by identifying unnecessary process complexity, poor panel utilization, uncommon materials, excessive tolerances, difficult compone…
Read answer →Who approves changes found during DFM review?
The customer or designated design authority approves changes that affect released design data, function, fit or specified requirements. The manufacturer may pro…
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