Blog

PCB fabrication, PCB assembly, PCB materials, DFM, SMT, HDI, ceramic PCB, and electronics manufacturing guides from QueenEMS.

2026年8月1日

How to Use a PCB Solderability Test Before Assembly

Decide when a PCB solderability test belongs in the RFQ and what evidence buyers should request before shipment or assembly….

2026年7月31日

PCB tooling holes requirements for RFQs: panel rails, fixture alignment, non-plated holes, assembly handling, DFM approval, and evidence….

PCB solder mask opening requirements for RFQs: pad exposure, SMD vs NSMD assumptions, mask expansion, assembly risk, DFM approval, and evidence….

PCB copper-to-edge clearance requirements for RFQs: routed edge and V-score limits, depaneling risk, exposed copper, DFM approval, and evidence….

Use PCB deviation request approval to control temporary supplier nonconformances before shipment or repeat orders….

Use PCB golden sample approval to freeze the accepted board baseline before repeat production or supplier qualification….

Define PCB backdrill requirements before RFQ so high-speed vias, residual stub targets, stack-up data, and inspection evidence align….

Use PCB incoming inspection to verify outsourced bare boards before assembly, shipment acceptance, or supplier claims….

2026年7月30日