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Pcb board mounting technics

Pcb board mounting technics

The early pcb assembly components were mainly chip-shaped resistors, capacitors, inductors, transistors, and integrated circuit SOPs, SOJ, etc., SMT has developed to the present, some large-scale integrated circuits have emerged, such as PLCC, LCCC, QFP. , BGA CSP, FC, etc., which puts higher requirements on the placement accuracy of the placement machine, and large-scale production also puts higher requirements on the placement speed of the placement machine. Therefore, placement technology is a key technology in SMT, which directly affects the assembly quality and assembly efficiency of SMA.

The pcb assembly technics is to place the pcb assembly components onto the corresponding printed circuit board pads in an orderly manner through the placement machine according to a certain placement procedure. It mainly includes two actions:suction and placement, so the English description technics as “Pick and Place”, it is the second important process in the SMT process. The basic technics flow is as follows:

Mounting technics → patch preparation → programming → (installing feeder, installing PCB) → SMT → (inspection repair, defect analysis, process summary)

Programming is an important factor affecting placement accuracy and placement efficiency.

8月-09-2019

FASTPCBA