Drill Chart: 5 Checks Before the Drill Runs A drill chart is the document that lists every hole in a design together with its diameter, its plating requirement and the tolerance that applies. It is the bridge between the design file and the drilling machine, and it is also the…

Backup Board: 6 Rules for Drill Entry and Exit A backup board sits under the panel during drilling, and entry material sits on top. Neither ends up in the finished product, and both have more influence on hole quality than their cost suggests. They control where the drill exits, how…

PCB Quotation Limits: Where the Edges Are 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…

CAM Engineering: 5 Reviews Before Fabrication CAM engineering is the step between a finished design and a shop that can build it. The design file arrives as artwork, drill data and a stackup, and CAM engineering turns that into the films, programs and instructions the line will work from. Everything…

PCB Quotation Maintenance: What Matters on the Production Line 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…

Selective Nozzle: 6 Setup Rules for Mini Waves A selective nozzle is a small pump driven fountain that wets one joint at a time, and it exists because a wave is too coarse for a board that mixes fine surface mount parts with a few connectors. The nozzle produces a…

PCB Quotation Setup: From Prototype to Volume Production 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 quotation setup from the perspective of a PCBA factory floor, covering…

Outgassing: 6 Checks for Board Materials Outgassing is the release of trapped gas from a material as it is heated or placed under vacuum, and on a circuit board it comes from laminate, solder mask, legend ink, coating and even from the plating chemistry left in a hole. The gas…

Hold Time Between Steps: 5 Rules That Protect Yield Hold time is the interval a panel spends waiting between one process step and the next, and on a PCB line it is a process parameter even though it is not written on any machine. A panel that waits an hour…

PCB Quotation Defects: What Goes 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 quotation…