Electronics Forum | Wed Feb 12 14:38:18 EST 2020 | SMTA-Alex
There are several areas you can check. Your profile is very fast. You reach the peak at around 3 minute mark. That's not enough time for the fillet to form. Try to slow down your belt speed to around 90-95, to give it more time. Also, your temperatur
Electronics Forum | Tue Apr 05 12:31:05 EDT 2022 | proceng1
A while back, we had a yellow coating showing up on some solder joints at Selective Solder (LEAD alloy). I contacted the company for our machine and he looked into it. One change we had made not too long before is we switched from Superior 75 to Sup
Electronics Forum | Thu May 18 21:46:21 EDT 2000 | Dave F
Scott: First, it's neat that you do cartridge monitoring on you staff. We do that once a year. We (and I assume others) are responding to OSHA requirements: Lead CFR 1910.1025 permissible exposure limits for lead, provisions for medical examinati
Electronics Forum | Fri Apr 02 11:18:02 EST 1999 | Scott McKee
| | We've been using a newly installed DI re-circulating system. | | It's been a big headache. Mostly understanding what causes our resistivity to be unpredictable. I think I've got a handle on that part now. The system consists of a Carbon,HMR(cheal
Electronics Forum | Thu Jan 08 16:16:09 EST 2004 | Dean
My first concern would be the choice of solder paste you have. There are better chemistries out there that far exceed the capabilities of the 609 2. Yes, the part will partially float on the solder (assuming plastic qfp). Cross sectioning would sho
Electronics Forum | Thu Dec 03 21:40:01 EST 2020 | itmconsulting
Hey Kyle - Good for you for pushing your horizons and considering pin-in-paste (aka "Intrusive Soldering"). Don't let the nay-sayers out there discourage you. When I encounter mixed tech PCBAs (SMT and through-hole) my first choice, if the design a
Electronics Forum | Wed Aug 09 19:14:41 EDT 2023 | solderingpro
In today's fast-paced manufacturing landscape, Surface Mount Technology (SMT) factories are seeking ways to enhance efficiency and flexibility while maintaining high-quality standards. The evolution of Autonomous Mobile Robots (AMRs) has provided an
Electronics Forum | Thu Mar 02 13:17:00 EST 2000 | Russ
Jack, a couple of questions first, 1. What pitch are these leads? 2. What are the lead footprint dimensions? 3. Orientation of component? I personally have never had much luck soldering QFPs in the wave unless they are 50 mil pitch or greater, we o
Electronics Forum | Sat Nov 04 22:26:33 EST 2000 | Aoki Laboratories Ltd.
Greg, The operating parameters for Wave Soldering are: 1. Preheat Temp. (80-110 c, board surface); 2. 1.5-3 secs dwell time in solder. This, 1.5 second, is the time required for both the lead and solder to gain sufficient heat and as a result "tinn
Electronics Forum | Mon Sep 25 10:18:00 EDT 2000 | Vic Lau
Dear Friends, I am handling a new project, and search for a solder paste stencil printer (automatic or semi-automatic) for lead free solder paste. The one I had looked for is MPM3000 series, however, what I heard from other freinds, those model is
