PCBA Tech - How to judge whether the SMT patch proofing is qualified?

After electronic product manufacturers hand over the SMT patch proofing work to SMT patch manufacturers, it does not mean that they have nothing to do. On the contrary, in order to ensure that there is no problem with the product and will not affect the performance of the electronic product, the electronic manufacturer must learn to appraise the qualified standard of SMT patch proofing, so as to avoid receiving defective products.

So, how to judge whether the SMT patch proofing is qualified? Below, PCBA manufacturers will give you a brief introduction from two aspects.

1. Check the appearance of PCBA board solder joints

For PCBA boards of good quality, the solder joints on the surface must be clean, smooth and metallic. If there is dirt or residue, it may have a certain impact on electronic products, such as easy leakage and frequent short circuits. This is a problem that often occurred in the early stage of mobile phone electronic products, and later, with the emergence of SMT patch technology, this phenomenon has slowly disappeared. However, if the company does not know this, this problem may also arise.

In addition, to determine whether the PCBA board is qualified, it depends on whether there are burrs, gaps, and tin drag on the surface. If there are, it will affect the beauty of the SMT patch proofing, and it will also bring other hazards, especially in high-voltage power supplies. During construction, tip discharge may occur, causing damage to electronic products.

The surface of the PCBA board solder joints must also be guaranteed to be free of abnormalities, otherwise it is easy to cause false soldering, false soldering, and unreliable SMT patch proofing. This is well known by experienced masters.

SMT chip processing

Second, check the reliability of the electrical connection of the PCBA board

When the surface of the component forms a virtual solder or a small amount of alloy layer, it is difficult to find this situation in the test or initial work, but as the use time increases, the contact layer is completely oxidized, it is easy to appear Desoldering, when the circuit is off and on, not working, etc. At this time, visually inspect the appearance of the circuit board, the circuit is connected, but it cannot work normally.

This is a very troublesome problem in SMT patch proofing, and it is also a situation that PCBA manufacturers will deal with carefully. In order to solve this problem, SMT patch proofing will ensure a reliable electrical connection during the manufacturing process, which can greatly reduce the occurrence of this situation.

The above two points are the criteria for judging whether the SMT patch proofing is qualified, just for your reference. In fact, many people are reluctant to hand over SMT patch proofing to other manufacturers. They think they can do it by themselves, and finding outsiders to do it will only increase the cost. But did you know? Really qualified SMT patch proofing products require not only technology, but also inspection, especially testing equipment, which must be kept up. The latter is very expensive, and it is difficult for ordinary small and medium-sized electronic companies to afford it.

Furthermore, handing over SMT patch proofing to professional manufacturers not only saves time, guarantees product quality, but also improves work efficiency. Although it is necessary to pay, the reliability of later electronic products is guaranteed, and the company's development is more smoothly. Therefore, instead of spending hard work in an industry that you are not familiar with, it is better to contract directly to a professional SMT chip processing manufacturer, which is more reliable and safer.