lead free and tombstoning

Subscribe to Thread

Hey folks, I was interested in any information that yo... - Feb 16, 2006 by RFredericks

... - Feb 16, 2006 by RFredericks

proper pad geometries, accurate placement, and good reflow p... - Feb 17, 2006 by RDR

with lead-free solders, one would expect to find less instan... - Feb 17, 2006 by Amol Kane

RFredericks

#39753

lead free and tombstoning | 16 February, 2006

Hey folks, I was interested in any information that you might have on tombstone reduction when using a lead free solder and profile. Thanks for any input that you may have! -Russ #x

reply »

RFredericks

#39754

lead free and tombstoning | 16 February, 2006

reply »

RDR

#39772

lead free and tombstoning | 17 February, 2006

proper pad geometries, accurate placement, and good reflow profile. Are you having problems right now?

reply »

Amol Kane

#39776

lead free and tombstoning | 17 February, 2006

with lead-free solders, one would expect to find less instances of tombstoning. this is because SAC alloys are not eutectic and melt over a range of temp (usually 217-220 deg C) instead of at a single temperature. therefore the forces due to solder surface tension are more gradual and there is lesser chance of force mismatch.

reply »