Thermocouple Attachment for Reliable PCB Thermal Profiles A thermal profile describes the product, not the oven, and the difference between the two is entirely in how the thermocouple is attached. A bead taped to the solder mask reports the mask temperature, while one bonded to a pad beneath a component…

Press-Fit Connectors: Hole Tolerance and Barrel Plating A press-fit joint is made without solder, and that is precisely why it demands more of the board than a soldered joint does. The connection depends on the hole wall deforming against the pin and staying in contact for the life of the…

Cleaning Chemistry Compatibility Testing A cleaning process has to remove flux residue without damaging anything else on the board, and the list of things that can be damaged is longer than most process engineers expect. Labels peel, connector housings craze, relay seals take on water, laser markings fade, and a…

Solder Joint Inspection Under Low-Angle Light Solder is a mirror. What an inspector sees on a joint is mostly the reflection of whatever light is aimed at it, which is why the same joint can look perfect under one lamp and defective under another. Low-angle light, directed across the board…

PCB Cleanroom Improvement: Design and Assembly Considerations 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 cleanroom improvement from the perspective of a PCBA factory floor, covering improving…

PCB Cleanroom Environment: Design and Assembly Considerations 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 cleanroom environment gives you a practical advantage when you choose…

PCB Cleanroom Traceability: Process Details and Inspection Points 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 cleanroom traceability from the perspective of a PCBA factory floor, covering…

PCB ESD Control Maintenance: A Practical Review for Manufacturing Teams 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 ESD control maintenance from the perspective of a PCBA…

PCB Cleanroom Timing: A Practical Review for Manufacturing Teams 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…

PCB ESD Control Limits: Process Details and Inspection Points 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 limits gives you a practical advantage…