Electronics Forum | Fri Feb 02 08:22:10 EST 2007 | davef
Try: * IPC-2221, 5.4.3 Datum Features * http://www-ese.fnal.gov/ese-dfe/SMEMA%20fiducial%20mark%20standard.pdf
Electronics Forum | Wed Feb 21 15:31:18 EST 2007 | wavemasterlarry
I talked to our quality director and he says every solder joint had to be 50% of the way up on all the parts to be consisdered good.
Electronics Forum | Fri Feb 02 13:27:59 EST 2007 | jdengler
Daxman, Make sure the clutches engage the nozzle holders properly. Sometimes the holders do not slip into the recess of new clutches as easily as they should. Jerry
Electronics Forum | Mon Feb 05 12:57:35 EST 2007 | cyber_wolf
Take the nozzles out and let the indicator tip touch the metal face the nozzle pushes up into. This will tell you whether the variation is in the shaft or the nozzles. Also while your indicator is touching the holder, manually grab the shaft assy a
Electronics Forum | Wed Feb 07 23:33:13 EST 2007 | KEN
It's been a while on that platform, but isn't there supposed to be a 0.3mm nozzle compliance when at Z0?
Electronics Forum | Fri Feb 02 10:16:27 EST 2007 | tglenn
IPC standard 2221A for board design specifies that through hole leads shall be mounted such that there is only one lead in any one hole. Does anyone the reasons for this requirement?
Electronics Forum | Fri Feb 02 12:37:11 EST 2007 | kennyg
For pads such as a d-pack... what is the effect on heat dissipation of leaving the unsoldered portion of the pad exposed metal or covering with solder mask? Is there a percentage of heat dissipation that is inhibited by covering with mask?
Electronics Forum | Fri Feb 02 14:40:39 EST 2007 | gregcr
Hi All, Has anyone out there used an Airvac DRS-22 for RoHS rework on lead free BGA's?
Electronics Forum | Fri Feb 02 16:44:57 EST 2007 | russ
preheat unit can is a little underpowered on some heavier assemblies, works foine for low mass .050 and thinnner though and have done some 062 as well Russ
Electronics Forum | Fri Feb 02 18:05:19 EST 2007 | MarinaG
I'm looking for the user manuals and the service manuals, and if it's possible some advice to start, I had just purchased one, but I don't know how to do. Thanks
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