karesz
Advanced Member level 5
Hi Azeri,
In my opinion is better a sort/type "special quadrate tip" to have (maybe you can "home-made" it with some tool), than these jet/nozzle is on all side of IC works in same time and so is more efficient, & spares stress for components & board...
These nozzle is optimally cca. 1mm oversized to the measures of IC sizes and is only from a thin metal sheet_ as your round nozzles too...
Otherwise you can with some smaller nozzle (at 3-5mm diameter) make hot the IC pads; guided, in circle, around your chip to (de)solder more times (you must become a fieling for that)...
I have a fine tweezers befor the "action" to hand placed & if check that tinn is molded; rash pick up the IC & clean after that the PCB...
In one case I have desoldered i.e. a 5x5mm 30pin PQFN with normal hot air gun too_thick nozzle on_, but it was a SOS situation & you must be care for not overheating PCB & nearby components_in these case are some neighbor chips light overheated (you can see it on leads optic) on solder pads:I have all resoldered it functions good...
K.
In my opinion is better a sort/type "special quadrate tip" to have (maybe you can "home-made" it with some tool), than these jet/nozzle is on all side of IC works in same time and so is more efficient, & spares stress for components & board...
These nozzle is optimally cca. 1mm oversized to the measures of IC sizes and is only from a thin metal sheet_ as your round nozzles too...
Otherwise you can with some smaller nozzle (at 3-5mm diameter) make hot the IC pads; guided, in circle, around your chip to (de)solder more times (you must become a fieling for that)...
I have a fine tweezers befor the "action" to hand placed & if check that tinn is molded; rash pick up the IC & clean after that the PCB...
In one case I have desoldered i.e. a 5x5mm 30pin PQFN with normal hot air gun too_thick nozzle on_, but it was a SOS situation & you must be care for not overheating PCB & nearby components_in these case are some neighbor chips light overheated (you can see it on leads optic) on solder pads:I have all resoldered it functions good...
K.