484 2,3 2,3 6.7 results

Electronics Forum: 2

chemical etching

Electronics Forum | Wed Oct 16 13:16:11 EDT 2002 | davef

Hey Mar, Sounds serious!!! Poke around Buehler, Leco, or Struers Try IPC TM-650 Test Methods Manual: 2.3.6A Etching, Ammonium Persulfate Method - 7/75 2.3.7A Etching, Ferric Chloride Method - 7/75 2.3.7.1A Cupric Chloride Etching Method - 12/94

UIC Radial Inserter

Electronics Forum | Fri Jul 11 00:31:31 EDT 2003 | swuicsup

Marcel, Reconfiguring your machine from 80 to 20 stations is quite easy. In the sequencer portion of your machine, it has it's own I/O box. in it, there's the MIT card, location (1). The bit switches are there to inform the controller in the in

Real power consumption of Heller 1707

Electronics Forum | Sat Dec 17 16:46:45 EST 2011 | eadthem

Startup current depends on your configuration. ours dose zones 1,2/ 3,4/ 5/ 6,7 last i checked it pulled about 40-55 ish on start up and 25-35 during run. our profile is a slow ramp till 170c then a fast ramp to 285c 280c(last 2 zones). 1707's

Machine ICOM 5000

Electronics Forum | Wed Dec 05 20:58:21 EST 2012 | davef

Look here IPC-TM-650 2.3.25 [http://www.ipc.org/4.0_Knowledge/4.1_Standards/test/2-3_2-3-25-1.pdf ]

Re: PCB fab supplier supplier/evaluation

Electronics Forum | Sun Aug 08 11:15:32 EDT 1999 | Earl Moon

| | Mike, | | | | Got your message and those of others concerning PCB fab supplier evaluation and qualification check lists, etc. I have a severe problem here in WI as I can hardly access the internet, and when I do it is cut off abruptly for no goo

Microvias

Electronics Forum | Wed Aug 18 02:17:37 EDT 2010 | tennythomas

I heard that one can create the stacked/staggered microvias in the layers 1-2 & 2-3 and skip microvia in the layer 1-3 of 6 layer stack up, when the prepreg is between layers 1 & 2 and the other prepreg is between the layers 2 & 3. I want to know w