91精品啪在线观看国产_精品另类_HD中字幕在线观看,海外最开放的浏览器,美景之屋2吻戏裸乳,皇上捏住宫女的3p双乳

SZSE:002741
Surface Finishing
Information
Application:

Immersion silver, as a lead-free PCB finished surface treatment process, serves for depositing a layer of silver with thickness of 6~16μ inch on copper surface through replacement reaction to ensure flat surface; it has good conductivity and solderability.

Advantage introduction:

Smooth surface, suitable for package of SMD and BGA;
Standard surface for Au-wire & Al-wire bond, can replace electroplating nickel/gold or ENIG;
Can replace electroplating nickel or silver for bonding, good reflexes as surface;
Good electroconductivity for contact conduction application;
Low risk of electromigration and low galvanic effect.
 
 
 

Related Products

Copyright ? Guangdong?Guanghua?Sci-Tech?Co.,?Ltd. GuangDong ICP No. 14033791-1