Electronics Forum | Mon Dec 20 08:23:30 EST 2010 | johanhuizing
The buyers in our company like to change the PCB finishing because of reducing costs. The proposed change is going from Ni/Au to HASL lead free, I know that in the beginning of the lead free period there where a lot of problems to use the HASL especi
Electronics Forum | Mon Dec 20 16:22:45 EST 2010 | rkondner
When you say Fine Pitch is this .5mm or is it smaller? I wonder what problems they experienced with HASL, the only problem I recall hearing was the surface was not flat. When applying paste with a stencil I can not see how the flatness is an issue.
Electronics Forum | Tue Dec 21 12:28:27 EST 2010 | wrongway
I know when we used them we had problems when one pad is 7 mils tall nest to a flat pad one lead touches the pad the lead next to it isnt touching anything so then have an open I don't see how anybody dosnt have problems with it that use quad flatpa
Electronics Forum | Tue Jan 04 10:40:41 EST 2011 | johanhuizing
Hello Piter, I don't know which type of HASL we will be using, we decided to do some test and I have to decide together with two other people which material we will try. Searching on the internet i discovered that it's not so easy to find a good sol
Electronics Forum | Mon Dec 20 09:46:21 EST 2010 | azbvc
I have to make a few fixtures using durostone Material. I would like to know what end would be best to use for milling pockets out. I tried using HSS 1/4 in all I did was burn it up. Also I tried to use a 1/4 " carbide end and burnt that up too. any
Electronics Forum | Wed Dec 22 13:04:41 EST 2010 | wingding
I have a FUJI MCS-30 and no way to print from it. I need a cable that goes from the printer to the connector on the back of the computer, or an adaptor that will allow me to use my dot matrix printer. The printer is new so I don’t want to replace it
Electronics Forum | Sun Dec 26 15:57:49 EST 2010 | darlur
Hi, I got LS3000 but Im missing of some following parts: -Fiber-optic rigid probe -Flexible Optical Probe, 0.4mm (.015”)diameter P/N 106-0047-P1 Does anyone know where can I get them? All the best,
Electronics Forum | Mon Dec 27 10:03:35 EST 2010 | duso02
Contact your distributor for the coating or Humiseal directly. Humiseal has had a recent issue with batches of 1B31. The specific problem is lack of adhesion, which is what you have as well. You need to find out if your batch # is one of the affected
Electronics Forum | Tue Dec 28 09:52:28 EST 2010 | flipit
Use a 0.002" to 0.003" thick stencil. Use an electroformed stencil from Photo Stencil or one of the others. Use -500 +635 paste or a -500 paste or type 5 or greater paste. I have printed at 0.008" pitch with 0.004" pads. It can be done.
Electronics Forum | Tue Dec 28 03:54:50 EST 2010 | riscy00
Hi Has anyone has thermal capacitance model for QFN (9x9) package with exposed pad 7 x 7 (or 6 x 6). Ideally between junction and case, junction case and board (JESD51-7 or similar). I wish to do transient with spice, to established how long it tak
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