日本語
I'm using GC10 lead free paste and pupulate boards with fair number of switches.
For some reasons some of the buttons are not soldered at all even though the paste fully melted. The leads are kind of sitting in an indentation of the pillow if solder in the end. Sometimes they just not connected at all and can be removed with no effort.
Should I switch the paste?
- Comments(1)
A****min
May 17.2019, 19:23:54
That's called hea d in pillow, a common problem. Generally, it is caused by not getting the board and component leads hot enough for long enough for the flux to break down the oxide layer on the part. With switches like that, they are probably real sensitive to heat, so you can't raise the temperature too much or the plastic might melt. Really, the only things you can do are up the temperature or the soak time while the solder is at full liquidus, or to get a more active flux.
