亚洲欧洲日产无码综合_地铁被陌生人做到高潮小黄文_黑森林精选av导航_免费人成网站在线观看

Welcome,Shenzhen VTA Electronics Equipment CO.,LTD. Official Website!

Official Weibo Official WeChatShenzhen VTA Electronics Equipment CO.,LTD.Official WeChat Feedback Chinese English

Shenzhen VTA Electronics Equipment CO.,LTD.

Shenzhen VTA Electronics Equipment CO.,LTD.QR Code

Contact Number:400-0755-098

Process Plan

Several lead-free alternatives currently in common use

Author: adminPublication Time:2018-12-06Reading volume:1282SmallMediumLarge

1. Alloys used in solder paste: 96, 5Sn/3, 5Ag Melting point is 221°C95, 5Sn/4, 0Ag/0, 5Cu Melting point is 217°C 2. Alloy solder used in wave soldering and hand soldering: 99, 3Sa/0, 7Cu melting point is 227 ° C (In terms of materials, several new solder pastes have been put on the market, but they cannot replace the existing lead-tin solders. They all need to be adjusted accordingly. The main difference between the new solder pastes and the traditional solder pastes is that the melting point is relatively high. High, commonly used lead-free solder paste melting point is usually 217 ° C -225 ° C)
Text label:
1. Alloys used in solder paste: 96, 5Sn/3, 5Ag Melting point is 221°C95, 5Sn/4, 0Ag/0, 5Cu Melting point is 217°C
2. Alloy solder used in wave soldering and hand soldering: 99, 3Sa/0, 7Cu melting point is 227 ° C
(In terms of materials, several new solder pastes have been put on the market, but they cannot replace the existing lead-tin solders. They all need to be adjusted accordingly. The main difference between the new solder pastes and the traditional solder pastes is that the melting point is relatively high. High, commonly used lead-free solder paste melting point is usually 217 ° C -225 ° C)

2018-10-24 166Reading volum