Electronics Forum | Fri Mar 19 15:44:35 EDT 2010 | cisridn
Coins are sometimes used on PCB's with RF Power Field Effect Transistors. These boards are usually mounted in an housing. They provide a ground path for the transistor to the PCB and thermal path to the housing. The coins are usually made of aluminu
Electronics Forum | Tue Aug 31 11:13:39 EDT 2010 | davef
Aluminum tape suppliers: * Chomerics Inc (T405 aluminum tape); 77 Dragon Ct # A, Woburn, MA 01801; 781-935-4850 http://www.chomerics.com * CS Hyde Company; 1351 North Milwaukee Ave., Lake Villa, IL 60046; 800-461-4161 / 847-265-6903 F800-441-806
Electronics Forum | Mon Sep 09 15:38:02 EDT 2013 | arendonk
Hi, We are having issues aluminum wirebonding on ENEPIG plated PCB by a too low pull force and or having lifts (1% range). Could any body advice how to solve this problem? Is there a special wire bond grade required? How to best clean contaminant
Electronics Forum | Wed Feb 13 16:38:56 EST 2019 | spitkis2
BTW - in our testing on housings with Sn42Bi57 paste, it took 240 seconds to reach 140C on an aluminum module with a mass of 0.75 lbs. This was from ambient and only using machine preheating before having the top heater turn on to peak at 162C. Sa
Electronics Forum | Wed Aug 20 18:07:13 EDT 2003 | davef
If you desire fairly uniform paste deposits, consider dispensing your solder paste. Neither a screen, nor a stencil will conform to the rough surface commonly seen in cast aluminum blocks, as you mention. Just out of curiosity: * What flux type and
Electronics Forum | Wed Aug 11 18:35:17 EDT 2010 | julie1
Anyone work with or have knowledge about metal core/clad boards? The board I'm working with is approximately 2" X 3/4" aluminum core pcb, in a 56 up array. There are 3 LED placements per board. I'm having trouble getting a consistent screen print.
Electronics Forum | Wed Mar 17 21:42:19 EST 1999 | Chuck Garth
We are presently aluminum wirebonding to gold plated lands. Our board manufacturer has been very inconsistient in the quality. It seems as though theey are over etched by about half the amount they should be. Can anyone give me the spec's that normal
Electronics Forum | Wed Aug 20 09:15:10 EDT 2003 | John S
My company is developing a product that will require solder paste to be printed on a piece of cast aluminum. The surface of the casting is not completely flat. It has been recommended that one way to work around this might be to use a screen instea
Electronics Forum | Fri Sep 26 08:15:01 EDT 2003 | Gabriele
Forced gas (hot air or N2 according to solder paste or flux) will be the solution. To rework Ceramic (Aluminum lid Heat Sink)BGA (32 mm square ) or Ceramic Colum Grid Array C-CGA 1,25 and 1,00 mm colum (pitch 42,5mm square), also them capped with a
Electronics Forum | Fri Apr 30 11:55:55 EDT 2004 | Chris Lampron
Hello Fredrick, I have used several methods of TC attachment including quick set adheasives (not good at reflow temps as Dave suggests) long set two part epoxies (work well if you have the time to wait for a sufficiant cure) temprobes, tape (kapton
