SMT Tombstoning: Causes, Diagnosis and Prevention
Quick answer: SMT tombstoning happens when one end of a small two-terminal component wets and pulls before the other end...
How to Decide Between AOI vs X-Ray vs ICT Testing
Table of Contents Hardware engineers often struggle to balance defect coverage with testing costs. You do not want field failures,...
How to Fix BGA Voiding: Stencil Design & IPC Limits
Table of Contents Does your assembly partner claim your boards pass the bga voiding acceptable limits simply because they hit...
4 Layer vs 6 Layer PCB: The Ultimate Cost & EMI Guide
Table of Contents Operating a facility with a 99.7% first-pass yield rate teaches you quickly where hardware teams lose money....
How to Compare PCBA Manufacturers in China
Compare PCBA manufacturers in China by engineering review, BOM control, SMT fit, inspection, testing, communication, and repeat-order evidence.
How to Make Controlled Impedance PCB Requirements Clear
Quick answer: A controlled impedance PCB specification needs a target, tolerance, controlled net or structure, signal layer, reference plane, material...
What PCB Fabrication Certifications Buyers Need
Quick Answer: PCB fabrication certifications should match the board's market, failure risk, and customer requirements—not a generic logo list. Most...
How Medical Device PCB Fabrication Costs Stay Controlled
Quick Answer: Medical device PCB fabrication costs stay controlled when the design remains inside a stable fabrication process window while...
Selective Soldering vs Wave Soldering: Cost and Design Guide
Selective soldering vs wave soldering is a process choice for through-hole joints, especially when a PCB also carries SMT parts....
How PCB Manufacturing China vs USA Costs Compare
Quick Answer: PCB manufacturing China vs USA is not a simple unit-price comparison. China often wins on panelized production cost,...
X-Ray Inspection PCB Assembly: When Does Your Board Actually Need It?
Table of Contents You’ve received your assembled boards, powered them up, and three of them instantly failed. The standard optical...
Centroid File（Pick and Place） PCB Assembly: The Complete Pick and Place Guide
Table of Contents You've just finished routing a complex 6-layer board, exported your manufacturing data, and sent it off for...