ewa's user avatar
ewa's user avatar
ewa's user avatar
ewa
Unregistered
  • Member for 11 years, 8 months
  • Last seen more than 11 years ago
  • Beijing, China
Stats
31
reputation
14k
reached
0
answers
1
question
About

I'm an electronical engineer for designing the process of manufacturing railway signal controll equipements.

I have been working at refolw soldering for 3years,and can't solve 2problems.:one is solder ball(30um~130um) on a very simple double layer PCB,the other is AgPaalloy finished solder joint suface is not shiny as it supposed to .

Badges
1
gold badge
1
silver badge
3
bronze badges
Top tags
0
Score
1
Posts
100
Posts %
0
Score
1
Posts
100
Posts %