Electronics Forum | Mon Jun 28 10:17:44 EDT 2004 | davef
People like flat surfaces for placing and reflowing certain components, like fine pitch devices. Some board suppliers can supply HASL that is flat and well controlled from an amount of material stand-point. Unlike OSP, HASL has a wonderful shelf-li
Electronics Forum | Tue Mar 15 17:58:56 EST 2005 | darby
Mat, Are you sure you should be using SnPb HASL boards if you are doing prep for lead free? If you aren't actually going to comply with RoHS then fire away. Nearly all of our assemblies are now ENIG and as any re-design comes up on a HASL board it is
Electronics Forum | Fri Jun 17 10:06:13 EDT 2005 | Doug
We have had some experience with the immersion tin. The appearance can be "bright" or "dull". Don't discount the fact that it is "bright" doesn't necessarily make it HASL. Furthermore, I personally have never heard of a board manufacturer "stripping
Electronics Forum | Tue Oct 03 22:42:49 EDT 2006 | C.K. the Flip
Cuculi, I'll have to go ahead and disagree with you. Very few PCB Suppliers (if any, and if there are any, they're lying) will promise an exact thickness spec. be it Sn/Pb HASL or this fancy, schmancy Sn100c HASL balogna. After all, the HASL proce
Electronics Forum | Tue Sep 14 10:10:39 EDT 2010 | teamcanada
We are having an issue with a PCB supplier. Their Tin HASL layer seems to be the problem. We have triedworking with them to correct their process. What seems to have helped is lowering their temperature of the Tin dip from 540 F to 510 F.We still ha
Electronics Forum | Wed Dec 22 07:20:21 EST 2010 | piter
HI I used both of solder leveling HASL and ENIG, HASL I can recommended for biger pitch is cheaper solder leveling than ENIG but problem with that solder leveling is during the reflow process HASL isn't flat and during reflow process component move
Electronics Forum | Wed Jun 28 12:29:59 EDT 2000 | Christopher Lampron
Does anyone know what the min-max plating thickness for HASL is? Is there a specification that defines this requirement? We have had problems with PCB's that have excessive solder plating on the pads. This wreaks havok with our QFP's. Any help would
Electronics Forum | Wed Jun 28 12:29:56 EDT 2000 | Christopher Lampron
Does anyone know what the min-max plating thickness for HASL is? Is there a specification that defines this requirement? We have had problems with PCB's that have excessive solder plating on the pads. This wreaks havok with our QFP's. Any help would
Electronics Forum | Fri Aug 21 08:33:17 EDT 1998 | Dave F
| Will somebody please explain HASL (here). Thanks. Tryin': Check the following thread on SMTNet. Dave F Green coating and through-hole plating - Xingsheng 15:13:05 8/11/98 (3)
Electronics Forum | Mon Jan 19 10:13:37 EST 1998 | John Haman Jr.
We are currently investigating alternatives to HASL for circuit boards with 20 mil pitch smt pads and below. If you have experience with this product or simular immersion tin products with respect to manufacturing or assembly I am very interested i
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