Electronics Forum | Wed May 29 14:17:01 EDT 2013 | ericrr
OK the plot thickens: Yesterday used brand new paste, as it comes out, nothing added. Did about 13 panels, (or about 60 wipes) extra wipes because the PCB registration varies from panel panel. SAME PROBLEM ~ SAME PLACE. Took all the paste off the s
Electronics Forum | Sat Jun 01 10:48:37 EDT 2013 | aemery
Z.Runkle, Gnus is absolutely correct in telling us how to find out the old passwords through DOS. However you asked for the "Calibration" mode password which is a default password and cannot be changed. This password was never given out readily be
Electronics Forum | Tue Jun 18 07:14:49 EDT 2013 | jlawson
Yes Aegis and Valor are good choices in terms of NPI, SMT programming , which one you choose will depend on other factors, Valor offers I feel a more rounded product, ie under one platform. Both offer CAD-BOM to SMT and Documentation, but Valor offer
Electronics Forum | Fri Jun 14 13:43:02 EDT 2013 | rway
The low value will be 0.624uF. You have to factor it from the low tolerance (-10%). So: 0.9 x 0.92 (machine tolerance) x 0.91 x 0.91 x 0.91 (3 decade aging factor for X7R dielectric). We factor hours at the 3rd decade (10,000 hours), but you can
Electronics Forum | Tue Jun 18 09:51:53 EDT 2013 | rway
If they're 1 1/2 years old, they are definitely aged parts. Either send them back for newer or widen your tolerances on the ICT to compensate. You are at the 3rd decade now (10,000 hours) and you will need to compensate for this. These parts are n
Electronics Forum | Wed Jun 12 13:27:28 EDT 2013 | joeherz
Our customer wants to do an overmold operation (3rd party to us) on the non-populated side of a rigid flex assembly. Their inquiry below: "We are going to end up over molding plastic over the back of this rigid flex to form an enclosure but wanted
Electronics Forum | Wed Jun 12 14:42:40 EDT 2013 | armandogomez
Hello guys ! I am here again with a problem, right now we have a problem with a new product, the problems are with voids with the PTH we put a receptacle with terminal blades that are 1.3mm width in a pth with a diameter of 1.5mm we use a pallet to
Electronics Forum | Mon Jun 17 19:10:04 EDT 2013 | hegemon
You have not mentioned exactly how the BGA was reflowed onto the board. Was it sent through the oven again after the mini-stencil, or was it heateed up and reflowed using a BGA rework station, or other hot air device?? From the sound of it (outside
Electronics Forum | Mon Oct 21 19:17:23 EDT 2013 | hegemon
The first picture shows an issue. Note that the vias adjacent to the interior rows are filled with solder. At the outside rows this is not evident. What you might have are interior spheres that are smaller in volume than the rows on the outide, si
Electronics Forum | Thu Nov 07 15:06:11 EST 2013 | hegemon
1st X-Ray looks pretty good. One instance of what looks like solder migration in the lower left quadrant. 2nd X-Ray shows a number of locations where the solder has migrated into the vias, shown by the small dark circles between the main spheres.
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