Detailed Explanation Of The Desoldering Principles And Work Points Of PCBA Processing

In PCBA processing, after checking the soldering quality of electronic components, it is necessary to disassemble and solder the poorly soldered electronic components. If you want to remove the wrongly soldered electronic components without damaging other components and the PCB board, you must master PCBA processing and disassembly and soldering skills. Next, the editor will introduce to you the desoldering principles and work points of PCBA processing.

1. Basic principles of desoldering:

Be sure to figure out the characteristics of the original solder joints before desoldering, and don't do it lightly.

(1) Do not damage the components, wires and surrounding components to be removed;

(2) Do not damage the pads and printed wires on the pcb during desoldering;

(3) For electronic components that have been judged to be damaged, the pins can be cut first and then removed, which can reduce damage;

(4) Try to avoid moving the positions of other original components, and if necessary, restore them.

2. Main points of desoldering work:

(1) Strictly control the heating temperature and time to avoid high temperature damage to other components. Generally, the time and temperature of desoldering is longer than that of soldering.

(2) Do not use excessive force when desoldering. The package strength of components under high temperature decreases, and excessive pulling, twisting, and twisting will damage components and pads.

(3) Absorb the solder on the desoldering point. You can use the solder suction tool to absorb the solder and unplug the components directly, reducing the desoldering time and the possibility of damaging the pcb.

This is the principle of desoldering and the main points of work in PCBA processing. I hope to provide you with some help.