Electronics Forum | Wed Aug 17 21:58:35 EDT 2005 | plcc
Does anyone familiar with COB process? I hv a PCBA product with one of the photodiode (size 26mmx1mm) which needs to be bonded directly on the pcb using COB technology. The wires that need to be bonded are 2, goldwires for about 100microAmp current.
Electronics Forum | Fri Oct 21 09:13:50 EDT 2005 | rlackey
Hi AJ, Depends on what machines you are running, how you run them, and if you have the spare components on feeders lined up ready to go. On a volume job using CP's using both feeder banks on change over I'd be upset if they stopped for more than a
Electronics Forum | Tue May 02 12:07:26 EDT 2006 | Sheldon Stewart (Process Engineer)
I am curious if everyone else is seeing the same dramatically reduced tip life with lead-free that I am? We have purchased new irones with controlled temperatures up to 800F. We are doing more hand soldering on our lead-free at the present while wait
Electronics Forum | Thu Aug 17 23:24:34 EDT 2006 | guest
I suggest you do the ff prior the machines arrival at your site. - Get all the dimensions of purchased machines from their catalogue. - Lay out / draw their footprints in the manufacturing floor. - Drop down air and power supply. Unpacking, level
Electronics Forum | Thu May 29 14:43:58 EDT 2008 | rgduval
We charge a flat rate that covers Programming, Documentation, and Engineering fees. We arrived at the number by estimating an average time spent on these activities over a period of about a year. I lifted this method from a company that I used to w
Electronics Forum | Mon Aug 06 14:44:07 EDT 2012 | joefosho
Hey guys, I'm new to this forum and registered to ask a question about PCB assembly cost. I was hoping to design a PCB that will be approximately 6" by 6" with about 1100 0805 SMD components on it. Half of them being resistors (3 different values) a
Electronics Forum | Fri Jul 19 10:19:01 EDT 2013 | rway
We have inline reworkers, so this time has been factored in. We currently use Siemens S25/20 machines with M1 systems. The placement machines run a little slower than the AOI at times so there is time to perform review, most of the time. It's not
Electronics Forum | Fri Jan 31 09:38:58 EST 2014 | pavel_murtishev
Hello, I am trying to estimate hole filling after PiH process using phoenix x|aminer X-Ray Machine. The question is how to select correct inspection voltage? Inspecting at 60kV 40uA all PiH holes appear to be completely black, that means completely
Electronics Forum | Sat Jun 28 07:19:32 EDT 2014 | sramos
Based on your knowledge and experience, could you tell me about speed differences when placing a mix of SMD at mass production? We could consider packages like the small R & C chips, then SOD323, SOT-23, SOT-23-5, SOT23-6, SON6, QFN8, SOIC-8, SOIC-16
Electronics Forum | Mon Mar 30 09:52:56 EDT 2015 | rgduval
Seems like you've got it about right....though, it's a rather complex equation. Loaded labor cost is only a part of it, if you're trying to estimate down to the last cent. You have to account for energy utilization, space utilization in the factory
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