Effective Methods for Disassembling Integrated Circuits from PCBs
In the process of PCB copying, it is essential to split the circuit board, which involves removing integrated circuits and other components to generate a BOM list. The separated PCB is then scanned and duplicated. Properly removing integrated circuits from PCBs is a critical step in this process.
Challenges of Integrated Circuit Disassembly
During maintenance or copying procedures, disassembling circuit boards becomes necessary. However, the densely packed pins of integrated circuits can make this task challenging and risky, potentially causing damage to both the circuit and the integrated circuit itself.
Methods for Accurate Disassembly
- Method 1: Solder Sucker Technique
- Method 2: Medical Hollow Needle Removal
- Method 3: Electric Soldering Iron Brush Disassembly
- Method 4: Solder Addition and Disassembly
- Method 5: Multi-Strand Copper Wire Suction
Utilize a standard electric soldering iron with a power rating of 35W or higher. Heat the solder on the pins of the integrated circuit and use a solder sucker to remove the molten solder, allowing for easy extraction of the integrated block.
Employ medical hollow needles of appropriate sizes to cover the pins of the integrated block. Heat the pins with a soldering iron, place the needle over the pin, rotate, and remove once the solder solidifies, effectively detaching the pin from the PCB.
Heat the pins with a soldering iron and use a small brush to wipe off the molten solder, separating the pins from the circuit board. This method allows for individual or collective pin removal using tweezers or a screwdriver.
Add solder to the pins to aid in heat transfer, making disassembly easier. Heat each column of pins with a soldering iron while prying with tweezers or a screwdriver to remove the integrated block.
Strip copper core plastic wire, apply rosin alcohol solution, and place the wires on the pins of the integrated block. Heat the wires with a soldering iron to absorb the solder, then remove the integrated block using tweezers or a screwdriver.
Conclusion
By employing these effective methods for disassembling integrated circuits from PCBs, you can ensure a smooth and damage-free process. Choose the method that best suits your needs and equipment availability for successful disassembly.
