- #1
fiedel
- 12
- 0
Hi there,
I have a tiny 48-QFN chip that I have to solder manually. The pin width of the chip is .28mm and the clearance of the pins is .22mm. The pins are totally under the chip and from side I can only see little metal indicating the positions of the pins, which makes it impossible to solder with iron... There is also a huge ground pad under the chip.
I set the air gun's temperature to 750F and blew the chip on the board for almost 2 min... Nothing happened. I guess the solder didn't even melt, probably due to the ground pad, or the ground plane... What can I do with it?
Btw, where can I send the chips and the boards for soldering if I can't make it...?
Thanks.
-fiedel
I have a tiny 48-QFN chip that I have to solder manually. The pin width of the chip is .28mm and the clearance of the pins is .22mm. The pins are totally under the chip and from side I can only see little metal indicating the positions of the pins, which makes it impossible to solder with iron... There is also a huge ground pad under the chip.
I set the air gun's temperature to 750F and blew the chip on the board for almost 2 min... Nothing happened. I guess the solder didn't even melt, probably due to the ground pad, or the ground plane... What can I do with it?
Btw, where can I send the chips and the boards for soldering if I can't make it...?
Thanks.
-fiedel