In the process of PCB copying-board, due to the split of the circuit board, remove the integrated circuit and other components to make BOM list, and the bare board PCB split down the scan and copy board, therefore, in this process, the correct disassembly integrated circuit on the circuit board of PCB is also an important topic.

Not only is in the process of PCB copy board, is in the circuit maintenance, often need to remove from the integrated circuit on a printed circuit board, and the integrated circuit pin and even remove difficult, sometimes damage the integrated circuit and circuit board. Here, we provide several accurate disassembly integrated circuit is an effective method, we want to help.

Tin suctioner tin removing method
The use of tin suctioner disassembly integrated block, which is a commonly used professional method, using tools for absorbing, soldering electric iron, the power is more than 35W. Remove the integrated block, as long as the chip pin dual-use iron head electric heating on to the demolition, to solder melted by inhalation of fine tin, soldering all pins after the suction manifold can be removed.

Medical hollow needle removal method
Take medical 8 to 12 hollow needle. When in use, the inner ring of the needle is suitable for the integrated block pin. When removing the soldering iron with a soldering iron, the needle will be melted in a timely manner, with the needle on the pin, and then open the iron and rotate the needle, such as the solidification of the solder after pulling out the needle. Thus, the pin is completely separated from the printed circuit board. After all pins are done, the integration block can be removed easily.

Electric iron brush combined with dismounting method
The method is simple and convenient, as long as an electric iron and a small brush can be used. Remove the integrated block when the first electric iron heating, to be dissolved tin temperature will be on the solder melting on the pin, the opportunity to brush off the molten solder. Thus, the pin of the integrated block is separated from the printed circuit board. The method can be divided into feet can also be carried out. Finally, the integrated block is broken with a sharp tweezers or a small "one" screwdriver.

Melt removal method
The method is a convenient way, as long as the integration of the block to be removed to add a number of solder, so that each column of the solder joints connected, so as to facilitate heat transfer, easy disassembly. When dismantling the use of electric iron heating each column with a sharp tweezers or a small "one" screwdriver to pry a pry, two columns of rotation heating, until the removal of. Under normal circumstances, each column can be removed two times heating.

Multiple copper wire tin removal method
The use of multi - stranded copper core plastic wire, remove plastic sheath, the use of multi - copper core wire (can use the short - term head). The multi strand copper core wire on the rosin alcohol solution before use, the electric iron wok and the multi strand copper core wire on the chip pin on the heating, this pin soldering will be copper adsorption, absorption of solder can be cut off, repeated several times can be solder pin on the whole suck. Conditional wire can also be used within the shielded wire. As long as the solder is absorbed, with tweezers or small "one" word screwdriver gently pry, integrated block that is desirable.