MOSFET Soldering and Temperature Rise on a 3D Printer Board A 3D printer control board drives a heater, fans, motors and other outputs, so it carries several power transistors, driver devices, terminals and power components. If a load test shows that the device on one channel runs noticeably hotter than…

FPC Connector Assembly on Commercial Printer Boards A commercial printer control board connects to a display panel, sensors, a scanning assembly, motors and an operating keypad, and several flexible printed cable connectors are normally needed to do it. After assembly the joints can look perfectly acceptable, and then the cable…

PCB Mixed Alloy Assembly: Two Solders in One Build 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 mixed alloy assembly gives you a practical advantage…

PCB Low Temperature Solder Assembly: Saving the Sensitive Parts 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 low temperature solder assembly from the perspective of a PCBA…

Selective Conformal Coating for Industrial Display Boards An industrial display board carries a display interface, keys, a buzzer, communication terminals, the main controller and the power circuit, and a customer may ask for a coating so that the board survives the environment it will be installed in. The request is…

PCB Solder Alloy Selection: Which Metal Melts 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 solder alloy selection from the perspective of a PCBA factory floor, covering…

01005 Assembly on a Bluetooth Earbud Charging Case Board A charging case for wireless earbuds is small, and everything that makes the product work has to fit inside it: the power management device, the charging circuit, memory, the USB-C socket, the battery contacts and a large number of small passives.…

Embedded Firmware Development for Hardware Products Hardware is the skeleton of a product, but it does not do anything on its own. A board can be designed, fabricated and assembled correctly and still fail to perform because the code that is supposed to drive it was written late, written by…

PCB Nitrogen Reflow Benefit: Less Oxygen in the Oven 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 nitrogen reflow benefit gives you a practical advantage…

PCB Cooling Rate After Reflow: Slowing the Drop to Room 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…