Electronics Forum | Tue Jul 14 15:02:38 EDT 1998 | Brian Conner
Dave: Wayne is correct with his analysis of ultrasonic spraying - we also use Sonoteks. However, your post didn't ask for a different system, just a clarification regarding your problem. What type of flux system are you currently using - spray, f
Electronics Forum | Tue Jul 07 12:52:02 EDT 1998 | Upinder Singh
Thanks Earl. Well following is the data regarding the product. 1. The panel consists of 21 boards. 2. The surface I mentioned would have 3 SMds and 1 T/hole connector. 3. PCB thickness is 55 mils and the width of the hole on the PCB for the thru-
Electronics Forum | Thu Jul 02 19:18:31 EDT 1998 | Rin
| | | | I am looking for a little enlightenment with an issue that we have been seeing. We have SMT assemblies with poor solderability on TSOP and mini-QFP type devices. The solder appears to have incomplete reflow and/or grainyness to the joints. E
Electronics Forum | Sat Jun 27 02:30:41 EDT 1998 | Erhard
You will have to forget about the idea of finding ONE algorithm to optimize SMT placement. For pick and place, collect and place, turret type "chip shooters" with moving feeder cartridge and moving board you will each have to find your own algorithm
Electronics Forum | Tue Jun 02 12:58:07 EDT 1998 | Michael Allen
"...the part is aligned to the pads with in 10% before going into the IR oven." Sounds like the pad pitch might be okay (?). If that's not the problem, then what? I wish I had the answer, because I've struggled with heavy QFPs for some time now (2
Electronics Forum | Tue Jun 02 17:52:06 EDT 1998 | Dave F
| Is there someone who can tell me where I can buy rolls of leader tape for SMT component tapes. Is there a good way of bonding leader tapes, maybe a special instrument to do the job. Thanks for any help. Igmar: The following companies supply SMT co
Electronics Forum | Tue Jun 09 17:01:02 EDT 1998 | Earl Moon
1/8" cutters, although they can only be used | with our newer height-controlled machines. | 3. Reduction of operating parameters. Reduced Z-axis plunge rates for the | larger cutter sizes. | 4. Addition of a 1/2 sec. dwell at the plunges. The small
Electronics Forum | Thu May 28 22:02:09 EDT 1998 | Ian Bates
Jerry, I have been using the QP in a Proto and Production environment for about a Year and once the PD is Created(which may take some time) and vision processes. I rarely ever need to make further changes. As far as BGA Pd's. They are a Little
Electronics Forum | Sat May 16 05:48:02 EDT 1998 | Wayne
| Don't ya' just hate that kinda' stuff? The ones that always get me is when some company is advertizing a pick and place machine, and they have a picture of a board in the machine, under the nozzles, that's supposedly getting placed... the only prob
Electronics Forum | Thu May 14 19:05:02 EDT 1998 | Mike Konrad
Dave, Ionic contamination testers are considered to be a valuable tool to determine the cleanliness of both bare boards and post solder boards. There are some instances when SIR testing is more suitable for determining cleanliness than ionic contamin
