Removal method of multi pin IC of circuit board

Removal method of multi pin IC of circuit board

● Medical hollow needle disassembly method.

Take several medical hollow needles 8 to 12. When PCB board is used, the internal diameter of the needle just covers the integrated block pin. When disassembling, use a soldering iron to melt the soldering tin of the pin, cover the pin with a needle in time, remove the soldering iron and rotate the needle, and pull out the needle after the soldering tin has solidified. In this way, the pin is completely separated from the printed board. After all pins are done once, the integrated block can be easily removed.

● Solder suction disassembly method.

It is a common professional method to disassemble the integrated block by using a tin suction device. The tool used is an ordinary electric soldering iron with a power of more than 35W. When disassembling the integrated block, place the heated dual-purpose electric soldering iron head on the pins of the integrated block to be disassembled. When the PCB soldering tin melts, it is sucked into the tin finisher. After the soldering tin of all pins is sucked, the integrated block can be removed.

● Demolition method with electric iron brush.

The method is simple and feasible, as long as there is an electric iron and a small brush. When disassembling the manifold block, first heat the electric soldering iron. When the tin melting temperature is reached, melt the solder on the pin, and then use a brush to remove the melted solder. In this way, the pins of the integrated block can be separated from the PCB printed board. This method can be carried out by foot or by column. Finally, pry off the manifold block with sharp tweezers or a small "straight" screwdriver.

● Multi strand copper wire tin absorption disassembly method.

It is to use multiple strands of copper core plastic wire to remove the plastic skin and use multiple strands of copper core wire (short wire head can be used). Before use, put the rosin alcohol solution on the multi strand copper core wire. After the electric soldering iron is heated, put the multi strand copper core wire on the integrated block pin for heating. In this way, the solder on the pin will be absorbed by the copper wire. The part that absorbs the solder can be cut off. Repeat several times to absorb all the solder on the PCB pin. If possible, braided wires in shielded wires can also be used. As long as the soldering tin is sucked up, the integrated block can be removed by gently prying with tweezers or a small "straight" screwdriver.

● Solder melting disassembly method.

This method is a convenient method. PCBA OEM OEM substitute only needs to add some solder to the integrated block pins to be disassembled, so that the solder joints of each row of pins can be connected, which is conducive to heat transfer and disassembly. When disassembling, use an electric soldering iron to heat each row of pins, pry them with a sharp pair of tweezers or a small "straight" screwdriver, and heat the two rows of pins alternately until they are removed. Generally, each row of pins can be removed after heating twice.

This article mainly introduces seven methods for disassembling multi pin IC in PCBA processing plant