Integrated circuit board welding and manufacturing process

Generally speaking, integrated circuit board is the integrated circuit board, which is widely used in the fields of computer, TV, air conditioning and other electronic products to be automatically controlled. 25 (1) https://www.kingfordpcb.com/yuan.php?time=1685377305

1. Welding of integrated circuit board

1, dual in-line integrated circuit, can use two electric iron, at the same time adding tin to the two columns of pins for simultaneous heating disassembly.

2. Butt welding the next plug-in integrated circuit, the circuit board must be left with solder, resulting in the welding hole is blocked, we generally use a suction gun to clean up the residual welding hole.

3. For the damaged integrated circuit, you can use a sharp tool to cut off the pin of the integrated circuit, and then clean the remaining pin on the circuit board with a soldering iron.

4, in the process of disassembling integrated circuit, need to prepare tweezers, magnifying glass and other tools.

5, the hot air gun can make each welding spot evenly heated, very conducive to the welding and disassembly of integrated circuit.

Two, integrated circuit board production process

1. Print the drawn circuit board with transfer paper, print two circuit boards on a piece of paper, and choose the best printed circuit board.

2, cutting copper clad plate with sensitive plate to make circuit board diagram, copper clad plate, that is, both sides are covered with copper film circuit board, copper clad plate cut into the size of the circuit board, not too large, in order to save materials.

3. Polish off the oxide layer on the surface of the copper coated plate with fine sandpaper to ensure that the carbon powder on the heat transfer paper can be firmly printed on the copper coated plate when transferring the circuit board.

4. Cut the printed circuit board to the appropriate size, paste the printed circuit board on the copper plate, and put the copper plate into the heat transfer machine after alignment, and ensure that the transfer paper is not misplaced.

5, first check whether the circuit board transfer complete, if there are a few no transfer good place can be repaired with black oil pen. Then it is ready to corrode. When the exposed copper film on the circuit board is completely corroded away, the circuit board is removed from the etching solution and cleaned.

6, according to the thickness of the electronic component pin choose different drilling needle, in the use of drill drilling, the circuit board must be stable, the speed of the drill can not open too slow.

7. After drilling, polish off the toner covered on the circuit board with fine sandpaper, clean the circuit board with water, and then coat with rosin.

8. After welding the electronic components on the plate, power on, function realization, production is completed.