国产精品好好热av在线观看 I 中文字幕有码在线播放 I 婷婷色亚洲 I 秋霞伊人 I 九九色图 I 最新国产精品视频 I 国产丰满乱子伦无码专区 I 国产午夜福利精品一区 I 美女内射视频www网站午夜 I 中文字幕一区在线观看视频 I 美国av毛片 I 干干日日 I 国产精品久久久久久久久ktv I 成人免费久久网 I 国产亚洲精品自在久久蜜tv I 亚洲性生活视频 I 免费乱码人妻系列无码专区 I xnxx国产 I 干干人人 I 大伊香蕉精品视频在线 I www.毛片.com I 免费一级在线观看 I 欧美国产一区在线 I 六十路高龄老熟女m I 少妇高清一区二区免费看 I 国产aⅴ精品一区二区三理论片 I 黄色三级毛片视频 I 黄网站色视频 I 国内外成人激情视频 I 成人做爰在线观看

Many customers have reported that the samples of some touch switches they purchased outside are very useful. But when it comes to actual mass production, the product exhibits significant abnormalities.

So where exactly do these anomalies come from? Many people don't understand, including the business of some manufacturers. Today, we will talk in detail about touch technology for everyone

Why does the switch get stuck?

During our production process, our switches need to be soldered to the PCB board. The welding methods are divided into wave soldering and reflow soldering. Wave soldering is a welding method used directly for connectors,

The normal temperature for use is 230 ° C and the time is 3 seconds; Reflow soldering is a direct soldering method for SMT components, which is usually used in segments. The temperature is generally controlled at 250 ° C and the time is 3 seconds

A process takes about 10 seconds. We have already discussed the issue of blistering on the touch switch earlier, so I won't go into further detail today. The switches commonly used in the market are imported from South Korea

The phosphor copper shrapnel, which has been hyped up online, is characterized by its low price and standard lifespan. Simply put, it has a high cost performance ratio, but its drawbacks

When encountering high temperatures, the curvature of the shrapnel is relatively large, and the feel will become lighter. If there is flux flowing in during the welding process, it will cause jamming. The problem does not occur in a single place

The sealing of the switch body on the product shrapnel is also very important. If the sealing of the switch body is not good, there will be flux flowing into the product during the welding process. So, in summary and analysis,

The problems that cause the light touch switch to get stuck are these two points.