2015年5月28日星期四

bga reballing

http://www.intel.com/content/www/us/en/ ... video.html

Great video ! bga reballing

Things:
- Need the right soldering iron with high heat recovery.
- 10mm tip.
- Proper no clean flux.
- Lint free wipes and alcohol.
- Hot air station.
- Jig.
- BRAND NEW BGA'S (LEAD FREE).
- Solder paste.
- Printing jig.
- squeegees.
- Some good solder wick (i think the junk I have is exactly that).
- Skill.

- Remove BGA.
- Toss BGA
- Clean site in few strokes with proper flux and wick (should be 100% clean).
- Print solder paste on balls (creates strong fillets as stated). After reading an intel rework paper. I clearly see why its uses.
- Reattach chip perfectly so no solder paste is smeared or in places unwanted.
- Rework to intel specs
- Flush chip
- Perfect repair!

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