久久久久久久精品成人热小说,亚洲 欧美 激情 小说 另类,亚洲精品国产精华液,激烈 痉挛 抽搐 潮喷 MP4

News

Analysis of BGA soldering station knowledge

Release Date:2016-08-16

The meaning of BGA
BGA means chips packaged using BGA packaging technology.
There are four basic types of BGA: PBGA, CBGA, CCGA, and TBGA, which are generally connected to the bottom of the package as solder ball arrays for I/O output terminals
BGA soldering station
BGA soldering station, also known as BGA rework station, is a specialized equipment used when BGA chips have soldering problems or need to be replaced with new BGA chips
Classification of BGA soldering stations
1. Manual low-end models: suitable for BGA chip repair with a large pitch (0.6 or more) between BGA solder balls.
2. Semi automatic optical alignment model:
Using the principle of optical alignment to avoid errors in surface mounting.
3. Fully automatic machine vision alignment model: Based on the high-tech technology of machine vision alignment, a fully automatic repair process is achieved
The determining factors for choosing BGA soldering stations:
1. The size of the circuit board that needs to be repaired;
2. The size of the chip that needs to be soldered
3. Size of power supply
Requirements for BGA soldering stations:
Is there only three constant temperature zones;
2. Can the upper and lower heating heads be moved;
3. Does it have only curve settings;
4. Whether it has welding function;
5. Whether it has cooling function;
6. Is there a built-in vacuum pump
Reliability, testability, and ease of use of the equipment
1. The equipment should have safety protection functions, such as preventing safety accidents in the event of thermocouple, fan, or heating device failure.
2. The material selection of equipment components must be excellent and the wiring must be standardized.
3. The device has self testing function, which facilitates users to locate faults.
4. The interface settings are reasonable, the operation is convenient, and the various functional buttons are easy to find.
展開
久久99国产精品成人| 欧美人与牲动交XXXX| 麻豆国产AV超爽剧情系列| 亚洲AV乱码一区二区三区香蕉| 日本美女图片| 国产精品无码一区二区三区| 他揉捏她两乳不停呻吟人妻| 美女学校丰满毛片免费看爽| 九色少妇丨porny丨自拍 | 国产AV无码专区亚洲精品| 国产性生大片免费观看性| 丰满乳亲伦小说| 欧美《熟妇的荡欲》未删减版| 中文字幕AV人妻互换久久| 免费网站安全软件大全| 熟妇五十路六十路息与子 | 亚洲毛片| 一本大道熟女人妻中文字幕在线| 东北女人毛多水多牲交视频 | 日日狠狠久久偷偷色综合96| 浪荡女的被cao日常np| 国产真实偷人视频| 亚洲熟妇色自偷自拍另类| 精品成品国色天香卡一卡二| 亚洲精品中文字幕无码专区一| 爽灬爽灬爽灬毛及a片| 色戒假戏真做7分27秒视频| 久久夜色精品国产欧美乱| 一本一道精品欧美中文字幕| 99精品国产综合久久久久五月天| 日本a级毛片| 破苞xxxx出血| 丰满多毛的大隂户毛茸茸| 欧美人与性动交α欧美精品| 最近中文字幕高清字幕| 国产精品视频永久免费播放 | 岳丰满多毛的大隂户| 亚洲日韩国产一区二区三区| 亚洲日韩一区二区三区四区高清| 在线精品国产一区二区三区| 亚洲人成色777777在线观看|