source:Industry News release time:2022-09-01 Article author:yu Popular:pcb
With the development of the market economy and the growth of all aspects of life, you may not know much about PCBA processing. Today, I will talk to you about the topic of PCBA processing. Do you know the desoldering methods for PCBA processing? What are the common problems? Let's learn more about it with the editor of Zhongke Circuit Board Factory.
1. The basic principles of PCBA processing and desoldering:
Before desoldering, be sure to figure out the characteristics of the original solder joints, and don't do it lightly.
(1) Do not damage the pads and printed wires on the pcb circuit board (multilayer circuit board) during desoldering;
(2) Do not damage the electronic components, wires and surrounding components to be removed;
(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 position of other original devices. If necessary, you must do the restoration work.
2. Main points of PCBA processing and desoldering:
(1) Strictly control the heating temperature and time to avoid high temperature damage to other components. Generally, the time and temperature for desoldering are longer than those for soldering.
(2) Do not use excessive force when desoldering. The packaging strength of components under high temperature decreases, and excessive pulling, pressing and twisting will damage components and pads.
(3) Absorb the solder on the desoldering point. You can use a tinning tool to absorb the solder and unplug the components directly, reducing the desoldering time and the possibility of damaging the pcb circuit board (multilayer circuit board).
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