AOI False Calls: 7 Ways to Cut Them Without Missing Defects AOI false calls are the flagged images that turn out to be acceptable when a person looks at them. They slow the line, consume the attention of the review station and, in the worst case, train operators to pass…

PCB Cycle Time Improvement: Getting Better Each Lot Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB cycle time improvement gives you a practical advantage when…

PCB Cycle Time Traceability: Following One Board Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This article explains PCB…

ESD Control on a PCBA Line: 7 Points Auditors Check First ESD control is the set of measures that stops a static discharge from damaging components during handling, assembly and test. The discharges that cause most of the damage are far below the threshold a person can feel, so the…

PCB Cycle Time Environment: Where It Happens Electronics manufacturing has become a discipline of small details. Solder paste volumes, placement accuracy, temperature profiles and inspection limits all add up to the final result. This guide looks at PCB cycle time environment from the perspective of a PCBA factory floor, covering…

Brown Oxide Before Lamination: Control Points That Matter Brown oxide is the conversion coating grown on inner layer copper before lamination so that the resin has something to grip. Bare copper bonds weakly to prepreg, while an oxide layer with a needle like crystal structure gives the resin a mechanical…

Wave Solder Nozzle Care: 5 Checks Before a Run The wave solder nozzle is the part that turns a pot of molten alloy into a controlled solder wave, and it is also the part that fails quietly. A slot that has eroded, a plate that has warped or a build-up…

Convection Reflow Oven Zones: 7 Settings That Decide Results Convection reflow moves hot gas across a board until the solder paste melts, wets and solidifies. The oven is divided into zones, each with its own set point, so the board passes through a sequence of temperatures rather than a single…

Component Tape Splicing: 6 Rules for a Safe Splice Component tape splicing joins the end of a spent reel to the start of a new one so the line keeps running while the feeder stays loaded. The joint travels through the feeder at the same speed as the pockets around…

Pink Ring on ENIG Boards: 5 Causes and Fixes A pink ring is a band of exposed copper around a drilled hole on an ENIG board, revealed when the gold and the nickel are removed during sectioning or after a chemical strip. The copper shows its natural colour instead of…