PCBA Tech - Causes and solutions of PCBA solder joints in Shenzhen

Causes and solutions of PCBA solder joints in Shenzhen
PCBA virtual soldering is also commonly referred to as cold soldering. The surface seems to be soldered, but there is no actual internal connection, or it is in an intermediate unstable state that may or may not be connected, which affects circuit characteristics and may cause PCB board quality to be unqualified. Or scrap. Therefore, we must pay attention to the phenomenon of PCBA virtual soldering. Baiqiancheng is a professional PCBA processing factory with rich experience in PCBA production and processing. Below, I will introduce the causes and solutions of PCBA virtual soldering.

PCBA processing

1. PCBA virtual soldering is a common line fault. The common causes of virtual soldering are the following two:

1. During the production process, caused by improper production process, such as poor soldering or lack of tin, the component feet and solder pads are not conductive, etc., and the circuit board is in an unstable state where it is not connected at all times;

2. Due to the long-term use of electrical appliances, some parts with severe heat generation are extremely prone to aging and peeling or impurity in the solder joints at the solder feet.

2. Method of judging the PCBA's virtual soldering position:

1. Judge the approximate fault range based on the fault phenomenon that appears;

2. Appearance observation, focus on viewing larger components and components with large heat generation;

3. Use a magnifying glass to observe;

4. Shake the suspicious component by hand, and observe whether the solder joints of its pins are loose.

Three, the method to solve the PCBA virtual soldering:

1. The components must be stored away from moisture;

2. The in-line electrical appliances can be slightly polished;

3. When soldering, solder paste and flux can be used, preferably a reflow soldering machine, manual soldering requires good technology;

4. Reasonably choose a good PCB substrate material.

About the causes and solutions of PCBA virtual soldering, I will introduce it here today. In the process of PCBA processing, virtual soldering is an important reason that affects the quality of the circuit board. Once the virtual soldering phenomenon occurs, it needs to be reworked. This will not only increase labor pressure, but also reduce production efficiency and cause losses to the enterprise. Therefore, it is necessary to avoid virtual soldering as much as possible. The occurrence of the phenomenon should be inspected well, and once the false welding occurs, the cause needs to be found and solved immediately. At present, the country has higher and higher requirements for environmental protection and greater efforts in link governance. This is a challenge but also an opportunity for PCB factories. If PCB factories are determined to solve the problem of environmental pollution, then FPC flexible circuit board products can be at the forefront of the market, and PCB factories can get opportunities for further development.
The Internet era has broken the traditional marketing model, and a large number of resources have been gathered together to the greatest extent through the Internet, which has also accelerated the development speed of FPC flexible circuit boards, and then as the development speed accelerates, environmental problems will continue to appear inPCB factories. In front of him. However, with the development of the Internet, environmental protection and environmental informatization have also been developed by leaps and bounds. Environmental information data centers and green electronic procurement are gradually being applied to the actual production and operation fields.