How to check short circuit of a circuit board during manual soldering
Identify the polarity of electronic components during PCBA processing
Means Which Can Prevent Component Shifting in SMT Processing
Skills of PCB prototype manual soldering
Reasons for the shift of Components in the SMT Process
Seven Types of PCB Probes
What Should Be Paid Attention to in Layout of High-frequency PCB
Precautions for PCB CCL Selection
Advantages of LED Plant growth light
Advantages of using LED grow lights to grow industrial hemp
Detailed explanation of PCB manufacturing process and precautions
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SMT Component Placement Process Of Parts : Manual Placement
SMT factory incoming PCB material inspection
Basic concepts commonly used in PCB design
Ideas and principles of High speed PCB layout
Component layout rules and safety distance considerations
SMT assembly process quality specification
5 points in PCB layout
Professional interpretation of SMT
Advantages and disadvantages of different PCB surface treatment
Special process in PCB prototype
Why the via hole become open after component assembly
Keep the cost of the PCB as low as possible
what are the causes of PCB board heating radiation problem
Pad size and via diameter dimensions consideration in PCB prototyping
How to Judge the Acceptance of PCB Quality
Which Color Circuit Board Sells the Most Expensive
Method to Solve the Noise Interference of Power Supply on High-frequency PCB Board
Disassembly Skills of Chip Components on PCB
What Factors Should Be Considered in the Selection of High-frequency PCB CCL
How to Place Special Components during PCB Layout
What Are the Functions of Capacitors in Circuits?
Testing Techniques for Common Electronics Components
What to do if There is a Short Circuit on the PCB
Desoldering Principles and knowhow during PCBA Processing
Black Oxidation of the Inner Layer of the Multilayer PCB
How to Ensure the High-performance Design of PCB
What Is the Printing Process of SMT Solder Paste?
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What Are the Differences Between PCB Paste Mask and Solder Mask?
How PCBA Is Packaged and Shipped
How long can PCBA finished products be stored?
What Are the Differences and Relations Between PCB, PCBA, and SMT?
PCB Baking Specifications
PCB "Solder Mask Tenting" and "Solder Mask Opening"
Five reasons for PCB deformation and six solutions
Importance of first article inspection of PCBA board
Temperature zone standard for SMT reflow soldering
Small and medium volume PCB manufacturers in China
The main reason for PCBA cleaning
For power filter, the more capacitors, the better?
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Content of PCB incoming testing
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Why choose Shenzhen SMT processing factory?
How long does it take to calculate the quotation for PCBA manufacturing?
Introduction of PCB design clearance requirements
Explanation of BOM, DIP, SMT, SMD
Introduction of the process of PCBA prototype
How to prevent pseudo soldering or cold soldering defects in PCBA manufacturing?
Factors that affect the Price of FPCB
What information is required for SMT processing at PCBA factory?
Skills of using 0ohm resistor in PCB design
How to select a PCBA manufacturer
SMT processing solder joint quality inspection
Characteristics difference between immersion gold PCB and gold plating PCB
Common malfunctions of Circuit Board Caused by Moisture
A Few Rules about PCB Panelization
Compare of multi-layer PCB with single/double layer PCB
Why do we need to introduce so many subdivided GND
Difference between immersion gold boards and gold plating boards
Aluminum PCB structure
Classification of different GND in circuit
Why PCB baking is necessary during manufacturing process

Desoldering Principles and knowhow during PCBA Processing

In PCBA processing, after checking the soldering quality of electronic components, it is necessary to disassemble and re-solder the poorly soldered electronic components. If you want to remove the wrongly soldered electronic components without damaging other components and the board, you must master PCBA soldering and de-soldering skills. Next, China PCBA factory SYS Tech will introduce the desoldering principles and working points of PCBA processing.


1. Basic principles of desoldering:


Be sure to figure out the characteristics of the original solder joints before desoldering, and don't do it casually.


 (1) Do not damage the components, wires and surrounding components around the components to be removed;


 (2) Do not damage the pads and printed wires on the PCB during desoldering;


 (3) For electronic components that have been judged to be damaged, the pins can be cut first and then removed, which can reduce damage;


 (4) Try to avoid moving the positions of other components, and if necessary, restoration must be done well.



2. Knowhow of desoldering:


 (1) Strictly control the heating temperature and time to avoid high temperature damage to PCB or other components. Generally, the time and temperature of desoldering is longer than that of soldering.


 (2) Do not use excessive force when desoldering. The package strength of components under high temperature decreases, and excessive pulling, shaking, and twisting will damage components and pads.


 (3) Absorb the solder on the desoldering points. You can use the solder suction tool to suck the solder and unplug the components directly, reducing the desoldering time and the possibility of damaging the PCB.

BGA desoldering 

Above are the desoldering principles and the knowhow in PCBA processing. hope it can provide you with some help.