Electronics Forum: 10-100 (Page 1 of 2)

No clean with higher SIR values

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.

No clean and 100 Mbps Fast Ethernet Transceiver

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

PCB Burned after reflow?

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

fine pitch QFP

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

parts left on a reel

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

Peel Back Force

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 >

IPC Questions........

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

Pick and place machine for small productions. Any suggestions?

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

how clean is clean?

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

SiPlace S25 Machine Controller HDD rebuild - error Software booting

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

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