Electronics Forum | Mon Jun 12 10:34:47 EDT 2006 | Bob R.
What's wrong with 10E10? 100 Mohms (1E8) is a pretty standard lower limit so you're a few orders of magnitude better than needed.
Electronics Forum | Tue Sep 30 09:21:08 EDT 2008 | eedlund
Anyone using a No-clean solder paste on a pcb with a 100 Mbps Ethernet chip? Will the residue cause any signal degradation? Any issues with a no-clean solder paste and 1000 Mbps Gigabit Ethernet? Device: National Semiconductor DP83848 10/100 Mb
Electronics Forum | Thu Mar 05 09:46:12 EST 2009 | davef
Solder mask requirements: * IPC-6012 and IPC-SM-840 contain detailed specifications and information regarding solder mask requirements. * IPC-A-600 defines acceptability of printed boards [analog of A-610 for board assemblies]. Why can't you use A-6
Electronics Forum | Thu Jun 16 09:13:46 EDT 2005 | russ
We use a 5 mil for 16mil pitch QFPs, Make sure that the stencil has been polished. Type 3 paste. We have used lead free no-clean, lead no-clean, and water soluble lead pastes for these packages. We set the printer for a slow stroke .7 in/min. wi
Electronics Forum | Mon Aug 20 07:17:36 EDT 2012 | ericrr
Hi we have Juki KE-750L's is there any program to work out how many parts left on the reel, on the machine, the placement program does have a option to keep this number, but once you finish the run and start a new run the figure is lost. Unless I mis
Electronics Forum | Wed Aug 25 15:54:46 EDT 2010 | blnorman
I previously did a search on "peel back force" > and there were a few results, and there were a > few hits that say EIA-481 is the standard, but > nothing on what the standard force range is. A > search on "cover tape" yeilds many hits about >
Electronics Forum | Wed Aug 30 07:45:08 EDT 2006 | davef
18-30*C, 30-70%RH * Particle count: ** Institute of Environmental Science and Technology (IEST) sets up the criteria and measurement methods to determine cleanroom class [eg, 10, 100, 1000, etc]. Consult their web site and perhaps take one of their
Electronics Forum | Thu Sep 19 18:10:53 EDT 2013 | spoiltforchoice
Don't let quoted speeds affect your decision too much. Send copies of pick and place files for actual products you intend to build and ask for simulated placement rates that would be achieved. Our machine has a rated max placement rate of 15,000cph a
Electronics Forum | Thu May 26 19:32:13 EDT 2005 | Mike Konrad
Three popular methods: Resistivity of Solvent Extract (ROSE) Test Method IPC-TM-650 2.3.25: The ROSE test method is used as a process control tool to detect the presence of bulk ionics. The IPC upper limit is set at 10.0 *g/NaCl/in2. This test is p
Electronics Forum | Mon Feb 07 08:26:38 EST 2022 | micropak
So you only rebuilt the MC HDD and didn't rebuild the Station PC? Am I right ? The Installer Floppy disks for MC software will install a default IP address and the Node Name. You have to change not only the IP addresses (in HOSTS file) but also the
