Electronics Forum | Mon Oct 16 11:53:35 EDT 2000 | Howard C. Ohlhous
I would like to know what type of glue is used to hold down surface mount devices to boards before/during solder reflow. I would like to obtain said glue for evaluation and possible use in an assembly procedure. Please Advise: What company manufactur
Electronics Forum | Tue Oct 17 01:12:50 EDT 2000 | Darby
Try "Amicon D125 F". Good for both dispensing and screen printing. I like the yellow colour, it shows up better on green pcbs. Most smd adhesives are single part, heat cured epoxies, UV curing having gone out of fashion some years ago. Amicon used to
Electronics Forum | Mon Oct 16 20:42:22 EDT 2000 | Dave F
Pete: It sound like somewhere through all that you should have gotten good product. Here�s a couple of questions on your board: * How are the SOIC positioned relative to the wave? * How are you controlling the flatness of the second wave? * What
Electronics Forum | Mon Oct 23 14:05:08 EDT 2000 | Aokilab
Hi Soza: As Dave F mentioned, there are lot of factors involving the formation of residue, after cleaning. Factors, (such as: solvent's cleaning power, presence of metal oxides, type of soldering flux, etc...). One thing pretty sure, IPC is usually
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
