PCB Router Audit: Checking the Practice 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 router audit from the perspective of a PCBA factory floor, covering auditing router…

PCB Router Cost: What It Adds Up To 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 router cost from the perspective of a PCBA factory floor, covering…

PCB Router Checklist: What to Check 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 router checklist from the perspective of a PCBA factory floor, covering checking router…

Solder Ball Inspection Criteria for Assembled Boards A solder ball is a small sphere of alloy sitting on or beside a joint where no joint should be. It might be a stray particle shaken from the paste, a bead expelled from under a component, or a fragment thrown clear by…

Stencil Aperture Design For Paste Printing The stencil is a thin metal sheet with a hole for every pad, and the aperture is that hole. The deposit that reaches the board is the volume of the aperture minus whatever paste stays stuck to its walls, so the size and shape…

Lamination Cycle Control In PCB Pressing Lamination is the step in which the layers of a multilayer board are bonded into a single panel. The stack is placed in a press, heated and held under pressure, and the resin in the prepreg flows, fills the spaces around the copper and…

Connector Pinout Design for PCBs A connector pinout is a small piece of design work with a disproportionate effect on how well a board performs. The same set of signals can be assigned to the same connector in several ways, and the choices determine how much crosstalk the cable carries,…

PCB Router Traceability: Following One Board 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 router traceability from the perspective of a PCBA factory floor, covering tracing router…

Differential Via: Key Checks Before Release A differential pair that runs cleanly on one layer and then changes layer through a via is no longer a differential pair at that point. The transition introduces an impedance discontinuity, an opportunity for the two halves of the pair to become slightly different,…

PCB Router Improvement: Getting Better Each Lot 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…