601 alpha results

Electronics Forum: alpha (Page 16 of 61)

Lead Free Solder Paste Evaluation

Electronics Forum | Mon Apr 06 12:57:49 EDT 2009 | jdumont

We are using Alpha's OM-338-PT with great results. The PT means pin testable which was selected because its residues are a little softer and clean slightly better.

SN100C Nickel Content

Electronics Forum | Mon Aug 03 04:51:58 EDT 2009 | lococost

From alpha metals lead free alloy impurities bulletin: "Levels greater than 0.025% may start to slow the wetting speed and could affect the hole fill performance. If process performance is OK then levels up to 0.05% are OK."

SN100C Nickel Content

Electronics Forum | Mon Aug 03 12:04:39 EDT 2009 | davef

Loco: Your post seems to be pasted from a Alpha Metals SACX0807 application sheet. We don't understand the relationship between your SACX0807 and Hoss67 SN100C. They're different alloys.

SN100C Nickel Content

Electronics Forum | Thu Aug 06 05:57:10 EDT 2009 | lococost

Indeed Dave, But I can't image the extra .5% silver that alpha adds to sn100c will make a huge impact on the difference between the behaviour of the 2 alloys, especially considering SAC gets exactly the same recommendation.

SAC305 soldering to 58Bi/42Sn

Electronics Forum | Tue Nov 24 10:43:06 EST 2009 | isd_jwendell

I have used SnBi from Alpha, and it worked well. The only issue I found is that you cannot have ANY Pb contamination.

Mixing No-clean and water soluble processes

Electronics Forum | Wed Feb 24 11:28:09 EST 2010 | vleasher

I apologize for being so vague. It is a standard leaded process using ALPHA OM-5100 for the SMT. So would a reduction in wash temp result in less white residue?

BGA Voids

Electronics Forum | Thu May 20 14:38:09 EDT 2010 | davef

Unfilled vias consistently produce higher quantities and larger voids than filled vias, in some cases 5 times as much. [Effect of Filling Via-in-Pad on Voiding Rates in PWB Assembly for BGA Components; C Shea, R Raut, L Piccione; ALPHA -A Cookson Ele