Hi guys
So after best part of a year doing other stuff, I'm back to master this BGA reworking, 2nd time lucky I hope
So I thought the best place to start was with the steps that were giving me problems last time.
With this type of reballing jig and stencils:
https://www.aliexpress.com/item/3303...archweb201603_
What is the best tyoe of flux to use to get the balls to stick to the BGA. Amtech NC559-ASM?
Once I have applied the balls, how do I melt them without them rolling away? Even with my Hot Air (Quick 861DW) on minimum airflow once the flux liquidizes the balls start floating around.
I did try last time using this little hot air preheater I have, and putting a square sheet of metal over the hot air vent then using it like a hot plate to put the BGA on top, but I still had trouble with the balls moving, though it was more successful than the Quick 861.
https://www.aliexpress.com/item/3270...archweb201603_
Is this due vibration from the heater?
Is there some way to do this reliably with what I have or do I need to get something like this?
https://www.aliexpress.com/item/3303...archweb201603_
Cheers
So after best part of a year doing other stuff, I'm back to master this BGA reworking, 2nd time lucky I hope
So I thought the best place to start was with the steps that were giving me problems last time.
With this type of reballing jig and stencils:
https://www.aliexpress.com/item/3303...archweb201603_
What is the best tyoe of flux to use to get the balls to stick to the BGA. Amtech NC559-ASM?
Once I have applied the balls, how do I melt them without them rolling away? Even with my Hot Air (Quick 861DW) on minimum airflow once the flux liquidizes the balls start floating around.
I did try last time using this little hot air preheater I have, and putting a square sheet of metal over the hot air vent then using it like a hot plate to put the BGA on top, but I still had trouble with the balls moving, though it was more successful than the Quick 861.
https://www.aliexpress.com/item/3270...archweb201603_
Is this due vibration from the heater?
Is there some way to do this reliably with what I have or do I need to get something like this?
https://www.aliexpress.com/item/3303...archweb201603_
Cheers
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