Electronics Forum: /02 (Page 986 of 1283)

no-clean flux vs. impedance

Electronics Forum | Tue Feb 19 09:26:54 EST 2008 | jdengler

The low solids flux that is commonly called no-clean can affect some circuits. We are building a PCB that measures pico amps. The customer required that it be cleaned. We would rather used the low solids and eliminate a step. The customer had

titanium pallets

Electronics Forum | Mon Feb 18 17:18:54 EST 2008 | slootj

Has anyone experienced problems with using Titanium pallets when they get hot? I have a product that solders with no defects when the Ti is first used or warm but then have leads that are not soldered when the pallet is hot. By hot I mean it has been

Dendrite growth

Electronics Forum | Wed Feb 20 08:57:13 EST 2008 | tonyamenson

We test for board cleanliness using an ionic tester. It's been my experience that if your board is clean you take away the possibility of growth even if the unit encounters moisture. We actaully had a problem where our wash lost pressure due to a mi

Fuji Programming

Electronics Forum | Thu Feb 21 15:11:29 EST 2008 | jlawson

Gerber standard has been around for long time as a fabrication data model for PCB makers, but not very useful for assemblers as no centroid data is actually present in the data. Also netlists are no supported and have to be calcualated with software

Tented Via's

Electronics Forum | Fri Feb 22 16:49:44 EST 2008 | pms

Steve, Trying to keep wave solder from coming up the via' from the bottom and adhering to the via's and via's pads during wave. We use WS flux thru-out the whole process. I have been concerned about possible flux intrapment in the via's. That's a g

0201

Electronics Forum | Wed Feb 27 04:23:13 EST 2008 | fujillews

Hi It is best to fit the VGA camera for 0201 parts make sure your software is high enough..above v1.33 although you can place without but no so good. 0.4mm tapered nozzles are best. 0201 feeder the locator base in increased by aprox 0.3mm and the ind

0201

Electronics Forum | Wed Feb 27 15:14:52 EST 2008 | gregf912

Senior, below, is correct. THe narrow view camera has to be upgraded in order to place 0201 components. Also to pick the parts you need the 0201 feeders. These feeders present the part 0.3 mm higher than the standard 0402 feeder. The part pickup heig

THT manual assembly worker instructions

Electronics Forum | Mon Feb 25 11:33:49 EST 2008 | ck_the_flip

Poor reading skills......that being said, with good resolution (3 megapixel and up) digital cameras so readily available, and cheap, why not use real pictures? After all, a picture's worth a thousand words... In the '90s, I used to translate CAD/Ge

THT manual assembly worker instructions

Electronics Forum | Mon Feb 25 17:01:38 EST 2008 | slthomas

In that case the same tools can apply, just different implementation. We might use any a number of visual aids for an assembly, one for each component type (resisors, capacitors, ICs, etc.). In the case you're describing we might color code the lo

THT manual assembly worker instructions

Electronics Forum | Mon Feb 25 18:36:52 EST 2008 | jmelson

Our people have EXCELLENT reading skills, and for some stuff I do have a list of the order to assemble the parts, with some tricks, etc. called out. But, a color-coded assembly drawing is what we use the most. I use Sharpie markers to color-code th


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