Electronics Forum: bottom (Page 159 of 231)

Looks like we'll be BGAing in the near future

Electronics Forum | Wed Feb 06 14:36:07 EST 2008 | dphilbrick

We had a customer that had 5 BGA's top and 2 bottom and several other assemblies that had 4-7 total BGA's that required WS. Our average build quantity was 2200 boards a month. We used high end Maytag dishwashers and a little Amterge(SP?) Took them t

Tented Via's

Electronics Forum | Fri Feb 22 14:22:07 EST 2008 | stevek

Are you using nocleans, especially when you get to SMT? Years ago, I had OA wave flux get into vias that were plugged from the top under parts. It is really difficult to clean small, high aspect ratio vias. Cross sections showed that the copper in

Prototype SMT & Ltd Prod Line Choices & Advice

Electronics Forum | Mon Mar 17 11:56:38 EDT 2008 | dyoungquist

We have had VERY GOOD free tech support from Mydata. However, we bought a refurbished TP9 directly from them. I believe if you by a used MyData machine from someone else there is a fee to register your company and the machine in their system before

Rollback the Lead-Free Initiative by Dr. Howard Johnson

Electronics Forum | Tue Jul 08 12:04:31 EDT 2008 | patrickbruneel

Military is outside the scope of the directive. The RoHS directive is mainly focused on electronic equipment with a high potential to end up in the normal waste stream such as consumer products. The EU commission also knows that removing lead from a

ive solder profiles

Electronics Forum | Mon Aug 04 16:20:35 EDT 2008 | patrickbruneel

After analyzing the pictures I don't think the solder balls are caused by the solder mask. If the problem would be solder mask related the solder balls would only show up on the solder mask but there are also solder balls on the plastic tabs. To me i

Taintalum Caps

Electronics Forum | Wed Aug 20 08:23:36 EDT 2008 | davef

Your tantalum capacitor supplier offers the best advice. We're not sure of the package that you plan to use. * If you are referring to molded package, surface mount, tantalum caps, yes, they can be wave soldered. Smaller case size chips (eg, Kemet A

Solder not reflowing properly

Electronics Forum | Wed Aug 27 14:19:40 EDT 2008 | grics

Have you given this information to your paste manufacturer???(Profile, Pics of defects?) The profile seems to look ok(without knowing paste info...) I think the ramprate looks a little aggressive but it could be the scaling of the profile and the i

BGA Rework - flux dispensinx issue

Electronics Forum | Tue Nov 04 07:50:14 EST 2008 | davef

Sure. Here's what you should do to apply repeatable amounts of flux on BGA during rework: * Squirt some gel flux on a plate or something like that that has a flat bottom and raised sides to corral the flux. * Cut notches into one edge of an old credi

WHat software do you guys use to convert files?

Electronics Forum | Fri Nov 14 08:06:43 EST 2008 | jdengler

Have you figued out how to import the gerber data into Camtastic? Once that is done click the tool menu at the top then the assembly utilities then create and group parts. This will allow you to select the pads for a given package and name it the

PBF BGA or PB BGA

Electronics Forum | Mon Dec 01 12:39:06 EST 2008 | tsvetan

this is really nice one ;) paper and cotton have lowest potential to generate static electricity see below, and usually is good practice to wear cotton glowe at least to one of your hands to not leave greasy finger spots on the gold finish of the PC


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