Test Point Placement For PCB Assemblies A test point is a defined place on the board where a probe can make contact for electrical test. It is the interface between the design and the test fixture, and its placement decides whether the board can be tested at all on automatic…

CTE Mismatch Design in PCB Assembly Every joint on a board is made between materials that expand at different rates. The board expands in the plane, the package expands less, the solder expands more, and the plated hole expands in a direction that the surrounding laminate does not follow. A…

PCB ENIG Finish 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 ENIG finish environment from the perspective of a PCBA factory floor, covering…

PCB ENIG Finish Specification: Writing It Down Precisely 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…

Copper Foil Types for PCB Laminates The copper on a board is supplied as a foil that is laminated to the dielectric, and there are two families of foil with different manufacturing routes and different properties. One is rolled from a cast ingot and the other is electrodeposited onto a…

PCB ENIG Finish 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 ENIG finish review gives you a practical advantage when you…

PCB ENIG Finish Risks: What Could Go Wrong 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 ENIG Finish Limits: Where the Edges Are 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 ENIG finish limits gives you a practical advantage when…

PCB ENIG Finish 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 ENIG finish data gives you a practical advantage when…

Resin Content Control in Laminates Resin content is the fraction of a laminate that is not glass fabric, expressed as a percentage by weight or by volume. It sounds like a manufacturing detail, but it is the variable that sets the effective dielectric constant, the flow during lamination, the finished…