Electronics Forum | Thu Jan 15 15:16:56 EST 2009 | jsherrow
We recently had our customer report a component failure trend of a few percent. Analysis indicates wire bond failure internal to a d-pak caused by what appears to be chlorine contamination. We're running a lead free process with aqueous wash. 700 co
Electronics Forum | Mon Jul 11 13:49:34 EDT 2011 | sarason
The program reads the Altium PCB directly and does some preprocessing, like centreing DPAK's etc. The ordering of components can be sorted by Designator. Top, bottom, SMT only components can be selected. There are 2 variation on VIOS :- JH_YM100_VIOS
Electronics Forum | Fri Aug 10 06:40:20 EDT 2012 | thmeier
The unique heat on the PCB is the big advantage and you also can´t exceed the temperature of the boiling point of your medium (we use a 240°C Galden). So small components are not "overheated" until the bigger ones like DPAKS are soldered. You also ne
Electronics Forum | Mon May 06 11:49:20 EDT 2002 | Jacob
Hello all, I am having soldering issues with an Everlight component it is a TM4201/TR2 (Right angle IRDA with a 1mm pitch). The problem I have is that after reflow the solder joints look perfect, but during test we are losing 7 micro amps as soon as
Electronics Forum | Thu Aug 13 14:10:01 EDT 2015 | markhoch
Hi Sam, I have a feeling that what you're trying to communicate is that your DPAK's are skewing off the pad during reflow. This is caused by a thermal "mismatch" where the solder paste on one side of the DPAK becomes molten before the other, then th
Electronics Forum | Fri Jan 19 06:52:36 EST 2001 | pteerink
We have had the same problem with several boards, and the problem was with the land pattern design on the PCB, not the stencil. We found that the part tends to center itself on the one large pad, and if the two smaller pads are not the right distance
Electronics Forum | Wed Aug 26 07:00:16 EDT 1998 | Wayne Bracy
| I am looking for advice on feeders for the MPAV Panasonic machine. We are about to encounter our first experience with Panasonic. We are unsure of which style feeders to buy for tube parts. Parts mix includes all sizes of D-paks, SOICs, PLCCs and
Electronics Forum | Thu Mar 21 21:21:37 EST 2002 | davef
In the beginning, there was TO-5. And it was good. Flushed with success, they created TO-220. It too was good. Then came SMT. It was better than some things, but then again ... In these early days, there was a haze on the horizon that blocked t
Electronics Forum | Fri Mar 22 10:55:11 EST 2002 | slthomas
Dave, you are THE master of the search. I made the lame assumption that if they'd had layout specs. for a part, it would be part of the spec. Bad assumption. The layout for the decal from that page you linked to is exactly what I needed. I look
Electronics Forum | Fri Mar 29 10:51:20 EST 2002 | lsmith
The IPC-EM-782 reads as follows: the adjustment factor is usually intended to increase the Z dimension slightly, but brings the Z maximum up to an even equivalent. Example if Zmax is 2.100mm then you would enter an adjustment factor of .100mm. The ad
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