Electronics Forum | Sun Mar 31 22:50:28 EST 2002 | ianchan
Nope, we do not have solder beads, like we said, what we have are near perfect solder fillets except for the portion where the component is "floating OFF" the pcb pads. We are now mucking through the IPC-A-610C for specifications dictation on "tilted
Electronics Forum | Mon Apr 15 21:27:16 EDT 2002 | djarvis
Everything we do is RF and have had no problems in the last 7 years with - Indium NC-SMQ92J, Sn63 Pb 37, 90.25% Metal, -325+500 mesh. Stencils are always 0.005" thick. However I will qualify that by adding we are an OEM and each new product may requi
Electronics Forum | Sat Apr 23 19:31:25 EDT 2005 | molosse21
Hi, Is there a solder paste alloy espacially done to solder components on a pcb gold plated ??? I am using the AIM 297DX SN63/PB37 no clean and i had a comments from my customer telling me that i am not using the right alloy. Personally i never he
Electronics Forum | Sun Apr 24 09:12:00 EDT 2005 | davef
We're not sure what your customer is talking about either. Gold and tin form an intermetallic compound [IMC] that can cause poor solder connections. To minimize the potential of a problem, keep gold to less than 3 percent of the metal. [Search the
Electronics Forum | Sat Dec 10 20:58:05 EST 2005 | Mike
How about this scenario: Need to rework a BGA on a 2 year old board. Originally the board was assembled with Sn63/Pb37 and the BGA has eutectic spheres. Now this package only comes with lead free balls. I believe that the board finish is not idea
Electronics Forum | Tue Mar 28 13:29:45 EST 2006 | solderiron
SN100C, not as aggressive towards other metals as are other High tin lead free alloys. Why? Sn63/pb37 The lead prevented the tin from being very aggressive. SAC305 no lead, silver instead. Silver doesnt block Tin from it's aggresiveness. SN100C no si
Electronics Forum | Sun Apr 15 18:06:16 EDT 2007 | greg york
You may need slightly longer dwell times and a little more heat in the reflow and wave to ensure proper alloying/wetting. Also consider if you are using a nickel doped and high copper alloy on bare boards in Leaded wave solder bath you will pick up c
Electronics Forum | Tue May 22 11:03:11 EDT 2007 | Michelle
We now have an AOI in our process after printing and have noticed that all the small aperatures are getting clogged by solder paste. Mainly on all fine pitch parts. We are using Kester ws R562 SN63/PB37 mesh -325+500 90% metal. It was manufactu
Electronics Forum | Mon Jul 16 16:02:08 EDT 2007 | ck_the_flip
I have zero experience with SN100c, but hey, how much different can it be from Sn63Pb37?! We solder large connectors all the time - sometimes these connectors reside on a ground plane area. We've been able to overcome hole fill issues (on 63/37) th
Electronics Forum | Wed Oct 10 02:04:10 EDT 2007 | omidjuve
hi we use a no clean solder paste with the sn63pb37 alloy and our high frquency board doesn`t have any problem in test but after this product is finished now we use 2 different solder pastes 1. sn62 pb36 Ag.4 RA tape 2. NC type lead free with Ag i
