男女吃奶做爰猛烈紧视频,狠干狠狠干靠逼,亚洲理论电影在线观看,亚洲福利在线无码天天看

Welcome to the official website of Legret Metal Company
Focus on electronic welding for 20 yearsDONGGUAN LEGRET METAL.,LTD
National consultation hotline:135-2799-2739
Contact US
mobile phone: 135-2799-2739
Service hotline: 0769-38893080
Email: lzd@dglzd.com
Address: Dongguan lvzhidao Metal Co., Ltd
Contact person: Manager Zeng
Industry information

What are the factors that affect the thickness of the laser steel mesh of the red paste used in the placement process?

作者:Lvzhidao solder factory 2021-04-24 0

What are the usual considerations for the thickness of laser wire mesh with red glue solder paste?


The thickness of the paste wire mesh is considered by the precision of the welding layer of electronic components. High precision electronic components are made of thin steel sheet, and large welding layer components are made of thick steel sheet. The thickness of solder paste mesh is usually between 0.08-0.18mm, and that of red glue mesh is between 0.15-0.3mm. Which components are high precision?


Generally, 0201 components can use 0.08mm thin steel plate, 0402 components can use 0.1mm thin steel plate, 0603 components can use 0.12mm thin steel plate... It is based on the size of resistance and capacitance components to judge, then a PCB board is not only such, but also IC, BGA and other components, in this case, it must be based on the minimum IC interval to judge the thickness of wire mesh, Otherwise, too thin will be less tin, too thick will be more tin. The thickness of steel wire mesh is one of the most important factors affecting the quality of steel wire mesh.

er=http___i03.c.aliimg.jpg

博白县| 康定县| 资源县| 卓资县| 梅河口市| 望奎县| 墨脱县| 潼南县| 邵武市| 博乐市| 永州市| 高雄县| 仁寿县| 海城市| 韶关市| 和田市| 车致| 济宁市| 海原县| 南乐县| 合川市| 旬阳县| 白银市| 莱芜市| 宕昌县| 武山县| 玉树县| 盐亭县| 石棉县| 福安市| 莱州市| 利辛县| 昌平区| 靖远县| 九龙坡区| 蓬莱市| 积石山| 上思县| 吐鲁番市| 东兰县| 博野县|