Electronics Forum: min (Page 1 of 56)

min kV requirement

Electronics Forum | Mon Jun 03 11:51:44 EDT 2002 | Troy

A 50KV machine will allow you to see solder bridges and balls under the BGA. It will also allow you to check placement and can "see" through the metal housing. If you want to inspect for voids, then you what to look at equipment in the 100KV range.

min kV requirement

Electronics Forum | Fri May 31 14:36:12 EDT 2002 | russ

does anybody have any info on what the minimum kV power should be on an X-Ray machine to handle general BGA inspection? I have heard that you need a minimum of 100 kV for the Metal top packages but have also heard of people using 50-60 kV but I don't

min kV requirement

Electronics Forum | Fri May 31 16:36:57 EDT 2002 | davef

If you know about 'BIG DADDY', you know what I know. A nearby thread [ http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=2&Thread_ID=1678&mc=2&forum_idx=40 ] addressed your question more directly, but certainly didn't drill-down t

Min spacing for land patterns from PCB edge

Electronics Forum | Thu Mar 20 16:53:32 EDT 2008 | guhansub

Min spacing will be 0.75'' on all the 4 edges

Squeegee speed for Sn/Pb

Electronics Forum | Tue Sep 13 09:08:15 EDT 2005 | russ

Squeege speeds can vary from .5 in/min to 6-8 in/min. It really depends on what the prints look like. For ultra fine pitch I usually start at .8 in/min and take it from there.

Max and Min nozzle settings on CP7

Electronics Forum | Sat Jul 24 04:02:18 EDT 2004 | kent_peterson

Two ways at it.You could just put the same nozzle for both the min and max.Or you could move the feeder into a location that has similar parts using the nozzle you want. With the feeder setup it should be optimized for the least amount of nozzle ch

Max and Min nozzle settings on CP7

Electronics Forum | Sat Jul 24 04:02:21 EDT 2004 | kent_peterson

Two ways at it.You could just put the same nozzle for both the min and max.Or you could move the feeder into a location that has similar parts using the nozzle you want. With the feeder setup it should be optimized for the least amount of nozzle ch

Parylene coating - spots defect around via holes & other flat surface

Electronics Forum | Wed Oct 05 04:32:49 EDT 2016 | piyakorn

Rinse IPA 5 Min --> Treathment/soak IPA50%+SILENT50% 5Min --> Baking 60C/30Min --> Parylene coating (around 8Hr in chamber) --> Found defect spot. We have simulated and ensure board drying before parylene that still have spots. Need help - Thank y

Throughput Calculation

Electronics Forum | Wed Jun 04 18:57:37 EDT 2003 | Rivkin

Hi Guys, How do you calculate throughput? and what's the standard allowance for some hidden downtimes like pick-up miss, pick-up errors, parts/feeder replenishment etc. say i have 4 machines that are not properly balanced in tact time: A= 3 mins

Reflow Incoming Chilled Water Temp

Electronics Forum | Tue Jul 13 13:37:23 EDT 2010 | pjc

That's cold compared with this specification from a leading oven mfr.: Flow Rate - 1.0 - 3.0 US gal/min (3.79 - 11.4 l/ min) • Inlet size and pressure - 0.5 in. male NPT; 310 - 483 kPA (45 - 70 psi) • Pressure drop - 200 kPa @ 11.4 l/min (30 psi @ 3

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