Hi everyone, I am still learning to do microsoldering but I am really old hats to electronic repair (had a full time job before that repairing TV and other electronics. Many of the electronics do have SMD repair but not BGA, SMT semiconductors (gullwing leads mostly) and SMD passives were larger.
Well, now I have to work with this at extremely smaller scale than before and lead free more tricky than before especially microsoldering, BGA is easy part. I have done both lead and lead-free soldering extensively for decades till now. Still have dislike for lead-free but you have to turn with the punch. Did use sufficient flux of good quality but still looking for tips and suggestions for better solder that is easier to deal with.
I know part of this usually the pad connected to ground plane stays colder while other pad to VCC plane warms up first and melts first causing passive component to tombstone using hot air rework.
I do have hot tweezers (small one, also do have larger one as well, new tips) also but still having not enough heat input to melt to put on but pads wouldn't melt easily or remove as easily. I do have PCB heater but this is for iphone circuit board size only and find this really useful.
Still, having problems with tombstoning. Any best tips? The solder we have is poor quality and is 1mm dia or bit less. Is there a really nice solder wire? I know this from electronics repair background a best solder wire is real moneymaker and pleasure to work with. For example SAC305 of good brand and multicore solder.
One more thing, is this really true that tips comes in two types, one for lead-free and other one for lead solders?
Reason for this is I wanted to know what is best out there and your tips is appreciated:
I was recently hired few weeks ago to do the micro-solder jobs and repair computer and cellphones, tablets, still learning the ropes on microsoldering. Well business provided me with their tools is Hakko model FM-203 station with soldering iron and hot tweezers and chinese brand hot air handle but pretty good for what can do with. I intend to invest myself better micro soldering station (JBC, Metalcal, or Thermaltronics or pretty best one, that can instantly melt solder on solder pad connected to the heaviest power planes?) to replace my failing Weller (they are expensive to repair and does not wear very well but works for most part but I really wanted something real nice this time.
Also another problem had to deal with this constantly with any Hakko tips (even new) tarnishing rapidly and easily and could not melt solder even with sufficient flux. Problem is from my experience this is too hot but no choice working with fine tips and working around where there is excessive heat sink. Another problem, I would have to tin the tip with solder but end up too much solder and hard to control soldering on the circuit board.
Tips?
Cheers,
Well, now I have to work with this at extremely smaller scale than before and lead free more tricky than before especially microsoldering, BGA is easy part. I have done both lead and lead-free soldering extensively for decades till now. Still have dislike for lead-free but you have to turn with the punch. Did use sufficient flux of good quality but still looking for tips and suggestions for better solder that is easier to deal with.
I know part of this usually the pad connected to ground plane stays colder while other pad to VCC plane warms up first and melts first causing passive component to tombstone using hot air rework.
I do have hot tweezers (small one, also do have larger one as well, new tips) also but still having not enough heat input to melt to put on but pads wouldn't melt easily or remove as easily. I do have PCB heater but this is for iphone circuit board size only and find this really useful.
Still, having problems with tombstoning. Any best tips? The solder we have is poor quality and is 1mm dia or bit less. Is there a really nice solder wire? I know this from electronics repair background a best solder wire is real moneymaker and pleasure to work with. For example SAC305 of good brand and multicore solder.

One more thing, is this really true that tips comes in two types, one for lead-free and other one for lead solders?
Reason for this is I wanted to know what is best out there and your tips is appreciated:
I was recently hired few weeks ago to do the micro-solder jobs and repair computer and cellphones, tablets, still learning the ropes on microsoldering. Well business provided me with their tools is Hakko model FM-203 station with soldering iron and hot tweezers and chinese brand hot air handle but pretty good for what can do with. I intend to invest myself better micro soldering station (JBC, Metalcal, or Thermaltronics or pretty best one, that can instantly melt solder on solder pad connected to the heaviest power planes?) to replace my failing Weller (they are expensive to repair and does not wear very well but works for most part but I really wanted something real nice this time.
Also another problem had to deal with this constantly with any Hakko tips (even new) tarnishing rapidly and easily and could not melt solder even with sufficient flux. Problem is from my experience this is too hot but no choice working with fine tips and working around where there is excessive heat sink. Another problem, I would have to tin the tip with solder but end up too much solder and hard to control soldering on the circuit board.
Tips?
Cheers,
Comment