Electronics Forum | Thu Aug 07 11:58:36 EDT 2008 | pbarton
We have experienced the same problem with Pd/AG and P/Ag terminations on precision resistive parts. The problem is dissolution of the termination metallisation into the bulk solder. This is exacerbated by the higher thermal profiles required for RoHS
Electronics Forum | Thu May 09 17:16:16 EDT 2002 | davef
Russ makes a good point. While your profile probably meets your paste supplier recommendations, it may not be proper for the component. * Paste suppliers offer general recommendations for tin / lead interconnects. You need to modify that for board
Electronics Forum | Mon Jul 22 14:01:31 EDT 2013 | jax
HMP can mean a lot of things, although it is normally used as the generic name for one of the following alloys: Pb93.5 Ag1.5 Sn5 (296°C-301°C) Pb95 Sn5 (308°C-312°C) Pb97.5 Ag1.5 Sn1 (309°C) If you are talking abou
Electronics Forum | Sat Apr 14 08:23:29 EDT 2007 | davef
Laser soldering suppliers are: * Seica [low cost firefly A-30]; 45 Osgood St 1st Flr, Methuen, MA 01844; 978-683-8356 F8357 seicatestsolutions.com/pages/24/A30-Firefly-Solder-Station.php; Dave Sigillo [GM] sigillo@seicausa.com * Leister Process Tech
Electronics Forum | Wed Nov 02 11:14:45 EST 2005 | Doug
I am doing lead free testing on a Vitronics selective machine with a 4 mm nozzle. The finishes I am testing are ENIG, ImSn, and ImAg. The problem I am encountering is achieving good top side wetting. Has anyone had any luck with this type of an ap
Electronics Forum | Thu Dec 22 12:05:37 EST 2005 | Tony
Currently we are using a 2 step vapor soldering process to manufacture our std. lead soldered parts. The first step was done with a ls240 vapor fluid and the second was done with a ls200 fluid. Using a 221 deg C sn95/Ag5 solder for the first step a
Electronics Forum | Fri Aug 24 01:25:58 EDT 2018 | cupet
Hi everybody, please advise in case of soldering problems after the reflow soldering. The problem occurs randomly at different locations on different PCB's (not the complete surface of the board). These places are very difficult for rework. Could you
Electronics Forum | Tue Nov 24 18:45:12 EST 2009 | gregoryyork
We put it in one flow soldering machine probably 12 years ago now worked really well but was extremely brittle you maybe better off with the 1% Ag alloy as its more ductile. Look at AIM Solders site if you want further information on the alloy Itis a
Electronics Forum | Fri Apr 24 20:33:06 EDT 1998 | D.Lange
| Looking for anyone who has experience with high temperature soldering. Need to determine why solder joints are failing. Thermocycling of unit is -40C to +140C, 30 minute dwell time, 10 sec. transition time | Your help is appreciated | Ed Holton |
Electronics Forum | Thu May 05 09:50:29 EDT 2005 | patrickbruneel
Hi Hannu, You just gave a very realistic and practical view of the lead-free dilemma. The main reason that your coil coating doesn't get removed is because of the inability of lead free alloys to wet the surface and conduct the heat. Higher temperat
