Electronics Forum | Wed Oct 01 15:45:35 EDT 2003 | Jalinous Esfandayri
Hi Everyone: Does anyone know what the right silicone for bonding the pressure sensor bare die on PCB is? How do I prevent the fracture and keep good adhesive? Any help would greatly be appreciated. Regards, Jalinous Esfandyari Intelligent
Electronics Forum | Mon Oct 06 18:41:47 EDT 2003 | davef
In addition to our earlier comments, do not be misled into thinking that silicone materials, being rubbery, will transmit shock less. Nothing is farther from the truth. Many silicone rubbers are almost totally incompressible in the short time scale.
Electronics Forum | Fri Oct 03 08:41:00 EDT 2003 | gregp
JEDEC and IPC for instance do have conventions. But they are only typically for existing part types and do not coincide with one another. I think the bigger problem is the new components and the unusual components that don't seem to fall into any p
Electronics Forum | Wed Oct 01 21:22:37 EDT 2003 | ramanandkini
We have a 1.6 mm thick automotive PCB board of size 35x70mm. One of our vendor has given us a batch with lesser soldermask thickness 5~8 microns. Will this affect the circuit board on a long term. What should be standard for the soldermask thickness?
Electronics Forum | Thu Oct 02 10:55:37 EDT 2003 | caldon
Brad- The Spec can be downloaded free from IPC at http://www.smema.org/smema1.2.pdf (or IPC.org search for SMEMA Standards). As per Conveyor edge clearance should be .187" or 4.7mm. Regards, Cal Communications Test Design, Inc. www.ctdi.com
Electronics Forum | Thu Oct 02 11:08:45 EDT 2003 | russ
We verify each reels P/N prior to placing into the machine for any reason. I have been bit even harder than John. We built 80 boards with 672 per 0402s when we discontinued the two operator process. We now even have them read the numbers backwards
Electronics Forum | Thu Oct 02 11:09:57 EDT 2003 | James
Yes we verify every reel by some other operator. We hardly make mistakes now, due to the fact that they have to also write the initials of who verified it. There used to be many mistakes due to wrong reels, but now it is slim to none. It is better t
Electronics Forum | Fri Oct 03 11:11:29 EDT 2003 | Claude_Couture
We fired an operator because he used to initial a whole sheet of reel change tracking sheet at the start of his shift "to save time!" Some people just don't get the picture. A whole reel of resistors (20,000) went through because he did not bother to
Electronics Forum | Thu Oct 02 09:03:42 EDT 2003 | cardinal
The Accuflex is a machine that MPM has evolved into from a SM Tech platform. They purchased the product from SM Tech. The man who designed the platform designed Dek printers; essentially the Accuflex is a DEK platform. If you are looking for a UP
Electronics Forum | Tue Oct 14 11:24:12 EDT 2003 | Axl
OK guys thanks for the input! I went to a factory recently to get upclose and personal, it seems like a good machine. Now here is the ultimate question: If you stand this next to the DEK Infinity assuming you could get the Infinity for around the sam
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