Electronics Forum | Wed Apr 08 07:16:21 EDT 2009 | arrowvale
We have just switched to Almit (www.almit.com)LFM48 W TM-HP-S lead free solder paste. In general terms it is an easy printing paste, with great slump properties, wide reflow process window and offers excellent solderability on all pcb / component pa
Electronics Forum | Mon Apr 06 11:46:10 EDT 2009 | c111
I agree the longer soak will help provided you are not applying to much heat/time to the board now. -are the pads that lift connected to anything? This has happened to me in the past where un-connected pads would come of far easier than those connec
Electronics Forum | Thu Apr 09 15:39:08 EDT 2009 | dilogic
USOS software has ability to detect bad marks on the PCB. Just select an arbitrary area clear of components and apply a sticker to that place. The size of the sticker is not important, as you can define the search area. In the Product Editor, go to c
Electronics Forum | Wed Apr 22 07:54:18 EDT 2009 | clampron
Cood Morning, We have a similar situation. We have had a large volume (5K) of RoHS BGA's reballed with 63/37. We have had only a few failures most of which do not appear to be related to that particular BGA. Potential BGA failures are running under
Electronics Forum | Tue Apr 28 09:06:19 EDT 2009 | nibirta
Well the only spec is 10.88% flux, 89.12% metal. the problem is only at one specific capacitor we have this issue. Sn over Ni finish. Sn-Ag solder paste. I have read all the arhives from the site, but nothing explains me what is happening.everything
Electronics Forum | Thu Apr 30 01:44:45 EDT 2009 | nibirta
sorry. i forgot to mention. we have now two cases! one with two different lots of solder paste and one with a bad lot of components. May be u are right. Somebody did something. By the solder ball test on glass no solder balls were found. Only in the
Electronics Forum | Wed Apr 29 17:51:44 EDT 2009 | smt_guy
One more thing: I have a Panelized PCB with 8 boards on the X directions. As I move to the next PCB towards the right my misalignment moves to the right by 0.02mm. By the time I reach the 8th PCB I'm Off by between 0.12mm to 0.14mm. My fine pitch
Electronics Forum | Fri May 08 17:17:39 EDT 2009 | dilogic
All GSM files are in proprietary binary format and you can't easily extract needed data directly. As you said you have off-line sw. you can backup all the relevant folders (if you are affraid to mess up current feeder/component databases) and restore
Electronics Forum | Thu May 14 13:25:14 EDT 2009 | cyber_wolf
Me thinks generic profile + desktop and laptop computer boards= not happy time. Attach thermo-couple to appropriate location on said part/pcb. Make profile same as solder manufacturer / component manufacturer spec. There is no magic heater set poin
Electronics Forum | Wed May 20 07:51:42 EDT 2009 | Jeff
We have a GSM1 with version 1.4. The machine has the old VME chassis. So to upgrade the software (to use enhanced component setup) the VME chassis has to be upgraded. We had UIC in last year to look at this and they would upgrade the VME and software
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