Several methods of disassembling integrated circuits
During circuit maintenance, it is often necessary to disassemble the integrated circuit from the printed circuit board. Due to the many and dense pins of the integrated circuit, it is difficult to disassemble and sometimes damage the integrated circuit and the circuit board. Here is a summary of several effective integrated circuit disassembly methods for your reference.
The method of sucking and disassembling the tin is to use a sucker to disassemble the integrated block. This is a common professional method. The tool used is an ordinary electric soldering iron with a power of 35W or more. When disassembling the integrated block, just put the heated dual-purpose electric soldering iron tip on the pins of the integrated block to be disassembled. After the solder joints melt, they will be sucked into the thinner. After the solder of all the pins is sucked, the integrated block will be ready. Can be removed.
The medical hollow needle disassembly method takes several medical hollow needles of 8 to 12 gauge. When using, the inner warp of the needle should just cover the pins of the integrated block. When disassembling, use a soldering iron to melt the pin solder, put the needle on the pin in time, then remove the soldering iron and rotate the needle, and then pull out the needle after the solder solidifies. In this way, the pin is completely separated from the printed board. After doing this for all pins, the integrated block can be easily removed.
The method of disassembly with electric soldering iron brush is simple and easy, as long as there is an electric soldering iron and a small brush. When disassembling the integrated block, heat the electric soldering iron first. When the solder on the pins is melted by the melting temperature, take the opportunity to wipe off the melted solder with a brush. In this way, the pins of the integrated block can be separated from the printed circuit board. This method can be carried out separately or separately. Finally, use sharp tweezers or a small "flat" screwdriver to pry off the integrated block.
Adding solder melting and disassembly method This method is a time-saving method. Just add some solder to the pins of the integrated block to be disassembled to connect the solder joints of each column of pins, so as to facilitate heat transfer and facilitate disassembly. When disassembling, use an electric soldering iron to heat each row of pins with a sharp tweezers or a small "flat screwdriver" to pry it, and the two rows of pins are heated alternately until they are removed. Generally, each column of pins can be removed by heating them twice.
The multi-strand copper wire suction and disassembly method is to use a multi-strand copper core plastic wire to remove the plastic sheath and use a multi-strand copper core wire (short wire ends can be used). Before use, put the rosin alcohol solution on the multiple copper core wires. After the electric soldering iron is heated, put the multiple copper core wires on the pins of the integrated block and heat them, so that the solder on the pins will be absorbed by the copper wires. The upper part of the solder can be cut off, and the solder on the pins can be completely sucked away by repeating it several times. Conditions can also use the braided wire in the shielded wire. As long as the solder is sucked up, use tweezers or a small "flat" screwdriver to gently pry, and the integrated block can be removed.
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