PCB Hole Wall Quality Criteria And How To Measure Them A plated hole is the weakest structural element on most boards, and its quality is decided by a wall that cannot be seen without cutting the board open. Because the evidence is destructive, hole quality is judged through a combination…

Conformal Coating Thickness Control and Verification Conformal coating is specified as a thickness for a reason: the film has to be thick enough to exclude moisture and ionic contamination for the life of the product, and thin enough that it does not crack, trap stress or interfere with connectors. A…

PCB ESD Control Specification: Writing It Down Precisely 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 ESD control specification gives you a practical advantage when…

PCB ESD Control Sample: Checking a Small Piece 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 ESD control sample gives you a practical advantage when…

Wave Solder Flux Application and Dross Control Practice Wave soldering succeeds or fails on two things that are easy to underestimate: how much flux reaches the board before it hits the wave, and how much dross has built up in the pot. Both change slowly, both are visible in the…

Adhesive Dispensing: Design Rules and Process Limits SMT adhesive exists for one reason: to hold components on the underside of a board while it passes over a wave. Everything about the process, from the dot size to the cure schedule, follows from that duty. The adhesive has to survive the…

PCB ESD Control Review: A Second Look 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 ESD control review gives you a practical advantage when you…

PCB ESD Control Data: What the Numbers Say 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 ESD control data gives you a practical advantage when…

PCB ESD Control Risks: What Could Go Wrong 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 ESD control risks gives you a practical advantage when…

Copper Thieving Pattern Design For Even Etching A thieving pattern is copper added to a layer purely for process reasons. It carries no signal and connects to nothing, yet it changes how the etchant flows, how the plating current distributes, and how the finished panel behaves under heat. On boards…