PCB proofing

The Causes and Solutions of White Spots in Circuit Board SMT Chip

In the SMT patch proofing process of the SMT small-batch patch processing plant, a white spot or white spots in Circuit Board will appear on some circuit boards. What is going on? The appearance inspection also accounts for a large part of the quality inspection of electronic processing. The circuit board with white spots is …

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What are the Differences Between HASL and Lead-Free HASL on PCB Board?

With the continuous development of the electronics industry, the technical level of PCB boards is also constantly improving. Common processes mainly include tin spraying, immersion gold, gold plating, OSP, etc. In fact, spraying is divided into HASL and Lead-Free HASL on PCB Board, so what is the difference between them? 1. From the surface of …

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