PCB Statement of Work Setup: Process Details and Inspection Points 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 statement of work setup gives you a…

PCB Statement of Work Defects: A Practical Review for Manufacturing Teams 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 statement of work defects gives you…

Panel Cleaning Before Plating: 4 Steps That Decide Adhesion Panel cleaning before plating is the sequence that makes the copper receptive to a deposit. Oils from drilling and handling, oxides from storage and organic residues from earlier steps all sit between the metal and the plating bath, and none of…

Etch Line Conveyor Speed: 4 Checks for Dwell Control Etch line conveyor speed is the parameter that converts chemistry into geometry. It sets how long a panel spends under the spray, and therefore how much copper is removed and how much the side wall is undercut while it happens. It…

Copper Anode Corrosion: 4 Checks for a Clean Plating Bath Copper anode corrosion is the reaction that keeps an acid copper bath supplied with metal. The anode dissolves as the panel plates, and in a balanced bath the two rates match so that the copper concentration stays where the process…

Heat Sink Bonding: 6 Rules for a Reliable Thermal Joint Heat sink bonding attaches a metal sink, a stiffener or a shield to a board with a filled adhesive that has to conduct heat, hold mechanically and survive the thermal cycles of service. It replaces screws and clips where the…

ICT Fixture Probe Alignment: Keeping Probes on the Pad Probe alignment is the tolerance stack that decides whether every spring probe in an in-circuit test fixture lands on its intended pad, on every board, for the whole life of the fixture. When alignment drifts, the fixture does not simply stop…

Plating Tank Heater: 4 Checks for Uniform Temperature A plating tank heater does more than raise the bath to temperature. It has to hold the whole working volume at one value, from the surface to the bottom and from one end of the tank to the other, because the deposition…

Laminate Handling: 4 Rules That Protect the Stack Laminate handling is everything that happens to a core between the store and the press. Cutting, moving, stacking and pinning all leave their mark on the material, and the marks are easiest to see after lamination, when they have been bonded into…

Pad Cratering Inspection: Dye and Pry vs Cross Section Pad cratering is a fracture that begins in the resin-rich region of the laminate directly beneath a surface mount pad, and it grows outward under thermal or mechanical load. The solder joint usually survives, which is what makes the defect so…