Electronics Forum | Mon Jan 22 15:01:32 EST 2001 | aiscorp
CIM systems for electronics assembly have traditionally considered the PCB only. Final assembly "modules" are often attached to traditional systems to accommodate this common requirement for pre-PCB assembly, mechanical assembly, and final assembly
Electronics Forum | Fri Feb 03 16:40:24 EST 2006 | Mike
At my last employer, we ran a number of tests to make a "Hybrid" profile work (same profile Joe lists) . It worked great for everything but BGAs. The problem (6 months ago) was using parts not rated for lead free reflow temps. As the market fills wit
Electronics Forum | Wed Sep 08 11:03:02 EDT 2004 | dj_jago
Peter, The Siemens placement equipment has a simple coding structure: HS50 - 50,000 CPH S20 - 20,000 CPH S23 - 23,000 CPH S27 - 27,000 CPH Well... you get the idea. I have no idea about the speed of the 'F' machines. We get around 70-80% of this
Electronics Forum | Mon May 10 15:02:37 EDT 2004 | davef
There's no such specification. Not should there be. Shear tests [in our opinion] are senseless, because: * Solder joint strength in pull/shear varies with lead geometry, solder volume, lead metal/metallization, and the way the test is done. * She
Electronics Forum | Thu Oct 26 09:10:30 EDT 2000 | ptvianc
I am not familiar with the "HALT" terminology. Do you mean HAST testing? As for thermal fatigue, the most severe conditions are typically those cited for military and/or satellite applications. There are several temperature ranges that are used to
Electronics Forum | Fri Aug 08 12:46:02 EDT 2003 | davef
When I was a salty old fart in the Navy, we sent the babes from the turnip patch off on snipe hunts. Shear tests are [in my opinion] senseless. The shear stress you measure depends more on the shear rate and on the point where the force is applied
Electronics Forum | Tue Jun 06 13:47:10 EDT 2023 | oxygensmd
In Hungary there are many EKRAs. Bosch, Zollner and many big/small company are using them. I also saw the latest DEK but I think DEK is over-complicated, fast and good printer - but if you have any problem, it cost a lot. MPM also nice machine but I
Electronics Forum | Tue Feb 19 10:09:48 EST 2002 | caldon
I always look at the support structure. This is where I feel the real Dollars and cents come into play. Sure you can calculate the derated value over months or years. But If your machine is in a "machine down" situation the derated value does not cha
Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F
=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so
Electronics Forum | Wed Jun 07 12:11:42 EDT 2000 | Rex Breunsbach
First of all I would like to thank you for your candid comments on this subject. ECD listens to its customers and values their input. Yes, our experience shows the coupons have a 30 to 60 run life depending on application. This works out to between
