Solder Paste Printing Defects And How To Clear Them Solder paste printing is the step that decides how much of the rest of the assembly process will go smoothly. The stencil deposits paste on every pad at once, and if the deposit is wrong on one pad, no amount of…

PCB Design Problems That Block Production Most boards that a fabricator or an assembly house rejects are not rejected for being electrically wrong. They are rejected because something in the pcb design cannot be built or assembled reliably, and the problems repeat across companies and projects. The list below covers…

Solder Paste Storage: Cold Chain, Shelf Life and Stirring Solder paste is a perishable material with a short shelf life, and the way it is stored and handled changes the printing result more than most operators expect. Paste that has been warmed badly, stirred at the wrong moment or left…

PCB Outsourced Assembly Control: 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 outsourced assembly control gives you a practical advantage…

PCB Prototype to Production: From One to Many 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 prototype to production gives you a practical advantage when…

PCB Quality Agreement: 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 quality agreement from the perspective of a PCBA factory floor, covering…

PCB Statement of Work: From Prototype to Volume Production 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…

Low Temperature Solder: Low Temperature Lead Free Soldering on Flexible Circuits Soldering a flexible circuit with a lead free alloy is a compromise between the process temperature and the materials of the cable. A conventional lead free alloy melts near 217 degrees Celsius, which means a peak above 240, and…

Assembling MEMS Microphone Packages on a PCB A micro electro mechanical microphone contains a moving membrane a few hundred nanometres thick, a back plate with acoustic holes, and an application specific integrated circuit that buffers and digitises the signal. The three are packaged together in a cavity with a sound…

PCB Ramp Up Plan: 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 ramp up plan gives you a practical advantage when you…