Electronics Forum | Wed Feb 10 18:26:04 EST 1999 | Earl Moon
| Has anyone had any experience in using SMT to mount an organic (FR-4, Getek) rider card onto an organic (FR-4, Getek) mother board? By SMT I mean the attachment of the rider card would be through pads directly to pads on the mother board. | | Than
Electronics Forum | Fri Oct 23 16:01:18 EDT 1998 | Earl Moon
| I need some info on how to stop the bridges I'm having on | radial and axial parts that are in the same place on every board. I'm also having problems with sot-25 bridging. I'm using a Electrovert E-pak. I tried leveling the machine,solder pot, an
Electronics Forum | Wed Jan 28 19:39:08 EST 1998 | Steve Gregory
| | What is the lifetime for a typical solder paste ? | | How long can boards be stacked waiting before the paste goes off ? | Lifetime and tack time depends on: | - Manufacturer | - Flux/mixture | - Environmental conditions | Typical lifetime is dep
Electronics Forum | Thu Apr 18 16:52:15 EDT 2002 | davef
General comments are: * First place I would look is the supplier of the pins that you are trying to install. Most suppliers that sell press fit components have done a good deal of work to qualify the component and will have all the specifications yo
Electronics Forum | Mon Mar 03 11:06:13 EST 2003 | msivigny
Hi floydl, I completely understand when it comes to data crunching after long hours of performing measurements, it's the last and most important arduous task in obtaining performance data. If a measurement and evaluation process that traditionally to
Electronics Forum | Fri Jun 10 10:49:06 EDT 2005 | jbrower
Hi James, As my companys process/manufacturing engineer, I set up a program that dramaticly reduced machine down time. Some base numbers; we went from an average of 4-6 hrs set up on our Mydata to setups of under 15 minutes on average and some belo
Electronics Forum | Fri Feb 24 13:04:17 EST 2006 | patrickbruneel
Hi All, The change over to lead-free is as easy or as difficult as you want to make it The big problem I see with this lead-free transition is that there is no benchmark of acceptability and no defect data (yet) related to visual appearance of a sol
Electronics Forum | Wed May 13 03:22:26 EDT 2009 | J.Hall
We use SAC387 (or 96SC) and I found that the SelectX was only marginally effective and that other factors (varying the wave height mainly - we use pallets) affected bridging more. Also, because we run different products at the same time through the
Electronics Forum | Fri Apr 23 17:59:54 EDT 2010 | hegemon
Therein lies the issue. Unknown storage conditions before we received the PCBs, date codes just expired (2 weeks), first article is de-lam city! Had a bad feeling about it. Have read some studies showing that there is no linear tie in of visual cha
Electronics Forum | Sat Sep 29 02:58:18 EDT 2012 | ericrr
I tried to look for "H890" on Internet and went nuts, (Thanks to Google) I would think H890 is part of a diode manufacturer part number. Have you tested it for a diode function? or maybe you have this is why you want a replacement. Tantalum capacito
