Electronics Forum | Wed Apr 21 17:34:48 EDT 2010 | stepheniii
Does it have to be one for both 1D and 2D? We scan barcodes we print with a 200 DPI printer which works out to 5 mil wide lines with no problem. 2D barcodes need a completely different kind of scanner. I know there are scanners that can do both but
Electronics Forum | Mon Apr 26 18:09:07 EDT 2010 | hegemon
Obviously knowledge in this area is still in a bit of a 'flux'. Dave, you had the right idea, the "putz"s signed off on the responsibility, and sent a new batch o'boards. FAST. This new batch were at least date code in 2010, and we had no issues so
Electronics Forum | Fri Apr 30 07:39:54 EDT 2010 | jdengler
We do a similar part on a Fuji IP3. Set table speed to low. I do not know the QP, but if it's similar to the IP make sure the board clamp/unclamp is smooth. On our IP it got dirty and was jerking causing the board to jump a little which bounced ou
Electronics Forum | Sun May 02 11:36:27 EDT 2010 | jdeluna
I do agree with Jerry: you should apply more paste on it, either with a step stencil, or doing overprint on it by, let's say 120% on Transformer's pad. Also, you need to check : a) there's smooth movement on transport process after the placement, no
Electronics Forum | Fri May 07 05:26:07 EDT 2010 | jlawson
Best have a chat to Rehm from their perspective. But galden does cost money. All depends on your production. Basically the more you run the machine, depending on design of machine, the more galden it uses... Open fixed mass galden type machines try
Electronics Forum | Mon May 03 11:20:43 EDT 2010 | mikesewell
A good guideline is keep it similar to your wave solder process, for example 2-3 sec. This assumes you're preheating the assembly. While polyimide boards are fairly robust at some point you will begin to see copper dissolution - the solder side pad
Electronics Forum | Thu May 13 21:24:16 EDT 2010 | davef
Jacki: That's exactly what we need to know, so that we can start slogging through this. [See we don't do well with broad, generalized questions. We don't have time to write dissertations. This is a task-oriented group.] Let's focus further: * Is
Electronics Forum | Tue May 04 12:43:55 EDT 2010 | rgduval
Good point on the shop air. Shop air can also generate a tremendous amount of ESD. There are special nozzles you can get to minimize it. We use our shop air mostly for blowing out connectors, and larger components that have a history of trapping w
Electronics Forum | Thu May 06 11:37:48 EDT 2010 | davef
There is no specification. Shear tests are very material / operator dependent. BALL SHEAR TESTING OF RAW BGA DEVICES: A total of 3 devices were subjected to ball shear testing. Results of the testing indicated shear values in the range of 0.7-1.25
Electronics Forum | Wed May 12 11:55:08 EDT 2010 | pbarton
We are using VPS, but only for high mass assemblies. As the other respondent has suggested if the mass of the assemblies is very low then difficult to control temp. rise times to within the normally accepted parameters. The Rehm equipment does seem
