Electronics Forum | Wed Mar 15 08:18:29 EDT 2017 | rob
It's well documented in higher power semiconductors where thermal interface materials are used, such as SIL pads, thermal grease etc. There are a couple of papers on the effects of voiding on MOSFET performance, but I haven't got around to reading
Electronics Forum | Mon Jul 08 22:03:39 EDT 2019 | eddy2019
Many beginners do not know how to start learning hardware circuits. In fact, the "hardware circuit" is composed of a part of the "unit module circuit". The so-called "unit module circuit" includes: various regulated power supply circuits (like the LM
Electronics Forum | Sun May 21 23:29:38 EDT 2017 | zsoden
Hi all, We run an old Seho 1135C wave solder with a 63/37 pot at 250°C. It has been running well for a couple of years but we have noticed lately that all of the larger pads (terminal blocks, transformers, etc.) require additional solder to be appli
Electronics Forum | Tue Jun 13 16:53:35 EDT 2017 | sean87
For many moons, I have used IPA for our cleaning > tanks within out DEK systems. Now we have a new > engineering team and he would like to try a > stencil cleaning solution (DEK PRO XF). Can > everyone tell me there pros and cons of using > each
Electronics Forum | Fri Jul 07 15:18:45 EDT 2017 | emeto
Tony, I will throw some thoughts here: 1. When we speak about shrink/stretch i start thinking about temperature right away. How do you store PCBs and or Stencils? Is your stencil getting hot or cold in the stencil printer? Are the boards on a room
Electronics Forum | Tue Jul 25 14:18:21 EDT 2017 | emeto
John, programming can be done easier, but you have to pay the price somewhere. I would recommend using the following sequence if you see a lot of new products all the time. 1. Use your own part number system. With these numbers you will fill up you
Electronics Forum | Tue Jul 25 16:08:52 EDT 2017 | dontfeedphils
I'm currently working on bringing a manual coating process/workcenter online and my QA team is giving me some grief. For background, we're using Humiseal 1B31 thinned with thinner 521, mixed at 1:1 by volume. Spraying through a Binks HVLP with 10 P
Electronics Forum | Thu Aug 10 13:26:02 EDT 2017 | dleeper
In my past life, I worked at a CM that used Mirae "Meridian" machines Universal Instruments "Genesis" machines. The universal instruments machines were much, much faster. What sort of head configuration did your Advantis machines have? The 30 spindl
Electronics Forum | Thu Jun 21 09:02:40 EDT 2018 | spoiltforchoice
I'd be tempted to say you buy whatever is most consistent with what you paid for the rest of the machine.... And if you can source Chinese copies& they aren't expensive it can't hurt to try a few. More generally (I don't know how these particluar ma
Electronics Forum | Tue Mar 20 08:04:47 EDT 2018 | spoiltforchoice
Those of us doing low volume with mesh ovens and double sided boards will often use the titanium strips used for making boards more rigid for wave soldering. Gives you enough clearance for lower profile items that you would typically find on the firs
