Wire Bonding: Design Rules and Process Limits Wire bonding attaches a die to a board with fine wires that are welded by heat, pressure and ultrasonic energy. The weld only forms if the surface it is made to is clean, metallurgically correct and flat. A board that is perfectly good…

PCB Feeder Setup Control: 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 explains…

PCB Feeder Setup Improvement: A Practical Manufacturing Guide 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 feeder setup improvement from the perspective of a PCBA factory floor,…

PCB Silkscreen Legibility and Print Tolerance Silkscreen is a printed legend, and the printing process has a resolution and a registration of its own. A legend that is drawn at the limit of what the screen can resolve is a legend that is partly missing on some panels, and the…

Solder Mask Defined vs Copper Defined Pads A pad can be defined by the mask or defined as copper with the mask pulled back from it, and the two choices behave differently at the joint. The difference is small on a large pad and decisive on a small one. What…

Solder Paste Deposit Area Ratio Limits An aperture releases paste when the friction between the paste and the wall is small compared with the force pulling the paste out. The two figures that describe this are the area ratio and the aspect ratio. What the Two Ratios Describe The area…

PCB Feeder Setup Specification: From Prototype to Volume Production 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 feeder setup specification gives you a practical advantage…

PCB Feeder Setup Handover: Key Process and Quality Checks 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 feeder setup handover gives you a practical advantage…

PCB Feeder Setup Limits: Practical Process Controls 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 feeder setup limits gives you a practical advantage when you…

PCB Feeder Setup Traceability: Practical Process Controls 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…