Electronics Forum | Wed Oct 25 10:42:07 EDT 2000 | slowe
We currently have the first version of formflex and had nothing but problems with the pins sticking. Dek now has a new version which is supposed to have eliminated the sticky pin problem. These will be replacing the first generation formflex. Until w
Electronics Forum | Tue Oct 17 14:40:04 EDT 2000 | Glenn Robertson
Jason - I have only one thing to add to Dave's excellent (as usual) information. Some time back we had a similar problem and we removed the dross bits with a soldering iron and solder wick. Yes, it's tedious and you have to look closely to be
Electronics Forum | Fri Oct 13 07:25:48 EDT 2000 | yeo
Any one have any experience on solder fillet problem on 0603 chip capacitor ? The phenomenon is solder wetting on one terminal is very good and totally no solder wetting on the other terminal. The positing of capacitor is right at the centre of the
Electronics Forum | Thu Oct 12 12:59:06 EDT 2000 | jackofalltrades
Does anyone know of a manufacturer of a Small Bench Top Convection Oven that could be used to reball BGAs? Right now we use Winslow Preforms and an Air-Vac DRS24 or our reflow ovens, but this ties them up too much and I'd like to keep reballing seper
Electronics Forum | Wed Oct 18 17:11:27 EDT 2000 | Dave F
Stephano: Our supplier specification sheets define 0 to 50�C operating temperature for most devices. Sheets for other devices to 70(75?)�C. Storage for the first group is 0 to 65�C. Heck, why don't you float a couple the puppies and check their o
Electronics Forum | Wed Oct 11 12:52:10 EDT 2000 | Antonio A. Medina
Hello all, I'm new at this so forgive me if my question seems common knowledge to everyone else. I've searched the archives but found no clear answer to what exactly is aspect ratio and what the best ratio is. All I really know is that it has to d
Electronics Forum | Wed Oct 11 09:23:06 EDT 2000 | Roger Squires
Has anyone had any success in finding open circuits (i.e. ball present but not soldered to PCB) under collapsible BGA's using an Agilent HP5DX x-ray tester and the BGA2 algorithm? Can anyone recommend an elongated pad design which produces the neces
Electronics Forum | Thu Oct 05 16:48:41 EDT 2000 | LarryK
Has anyone ever used the circuit repair kits? The type where you can replace a PTH or SMT pad that has been lifted or damaged? It appears that you just select a pad, trace or whatever needs replacing from a panel and heat or glue it onto the board.
Electronics Forum | Thu Oct 05 17:05:36 EDT 2000 | JAX
These types of foil kits work just fine as long as they are used before expiration. Scraping off the epoxy coat gets a little tough on fine pitch pads and etches. I have always like to use a solder sample board to retrieve my bits & pieces from whene
Electronics Forum | Fri Oct 06 08:22:05 EDT 2000 | jackofalltrades
BGA's are not difficult, but should be inspected no matter how careful you are. Here we have been doing bga's forever and x-ray 100%. Without an x-ray there is no good way to ensure the BGA is placed properly, without bridging or insufficients. If yo
