PCB Laser Drilling: UV, CO2, and Hybrid Systems Compared Microvias are what make high-density interconnect possible, and almost all of them are formed by PCB laser drilling rather than by a mechanical bit. A laser removes dielectric without applying mechanical force, which allows holes far too small for a drill…

PCB Vibration and Shock Testing: What Buyers and Engineers Should 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 vibration and shock testing from the perspective of…

PCB Salt Spray Testing: Design, Process, and Quality Notes 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 salt spray testing gives you a practical advantage…

Laser Drilling Defects in PCB Microvia Fabrication As conductor widths fall and pad pitches shrink, the mechanical drill reaches a limit. A bit that is small enough to produce a 0.15 mm hole is fragile, slow, and difficult to control to the depth required for a blind via. Laser drilling…

PCB Thermal Cycling Test Plan: A Practical Manufacturing Guide 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…

Clearance Rules: Electrical and Non-Electrical Spacing Every pair of copper features on a board has a spacing between them, and that spacing is either dictated by electricity or by manufacturing. Designers who treat all clearances as one category tend to over-constrain the layout in some places and under-constrain it in…

Conformal Coating and Surface Insulation Resistance The purpose of a coating is usually described in terms of water and dust, and those are real threats. The mechanism that actually destroys assemblies, however, is more specific: a thin film of moisture on the surface of the board, combined with contamination, forms…

PCB Thermal Shock Testing: Hot, Cold, Repeat 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 thermal shock testing from the perspective of a PCBA factory floor, covering…

PCB Layout Design: Grid, Placement and Spacing Rules Routing gets the attention, but most of a board’s electrical and manufacturing problems are decided before the first trace is drawn. A PCB layout design that begins with placement and finishes with routing costs less to complete, is easier to inspect, and…

PCB Design and Production: Schematic to Volume Manufacturing Every electronic product passes through the same sequence: a specification becomes a schematic, the schematic becomes a physical board, a prototype proves the concept, and a factory reproduces it thousands of times. What makes that sequence interesting is that PCB design and…