Discussion on the situation of cracks on the surface of power inductors after reflow soldering.The soldering curve is normal. it is purchasing time too long in 2019, it crack itself.Use X-Ray to see if it affects the magnetic circuit.
The IPC of the welded PCBA is based on reliability requirements, and its warpage is below 0.75% or 0.5%. The thermal correction of the electric assembly is equivalent to the aging of mechanical heat treatment.
Analysis of the causes of cracks in repaired BGA, I only used a soldering iron and flux to remove the tin, and did not use a wick.After the BGA machine was used for repair, it was cooled on the machine for 5 minutes before being removed. All operations were performed according to normal techniques.
USB warps up after reflow, how to solve it?according to the principle of reliable electronic product assembly process, for parts of this kind of product that are subject to repeated plugging and unplugging during service, we usually require mechanical installation and fixation before soldering.
PCB splitter is a kind of equipment for splitting PCB panels. It has greater quality assurance than manual and pliers splitting. PCBA splitter is mainly used to separate the assembled PCBA boards in the PCBA factory.
the circuit board surface solder mask and plugging holes are completed with white mesh. Stable production and reliable quality. Implementation of the conductive hole plugging process, Plug process after hot air leveling, Plug hole process before hot air leveling
Next to this circuit board is a measuring probe with a magnetic suction cup. It is very convenient to use. The first one is this gooseneck universal knot.or the measurement of ordinary low-frequency signals, this magnetic probe is very easy to use.
It is normal for the SMT machine to have PCBA missing parts, but if the PCBA missing parts rate is high, it will seriously affect the production efficiency and production cost, and must be solved.eeder problem, incorrect feeder setting, position deformation, and poor feeding mechanism
