Electronics Forum | Mon Oct 31 01:52:44 EST 2005 | milroyperera
Hi, I`m having some troubles with reflow soldering RQFP-208 pin IC with 0.5mm pitch. The profile is done according the solder paste supplier specs but still this RQFP is shifting in the reflow process. What could be the cause of this and what would
Electronics Forum | Mon Feb 14 18:04:29 EST 2000 | John Thorup
Try Integrated Ideas and Technologies for the UniSite. www.integratedideas.com 208/762-5533
Electronics Forum | Thu Jan 11 08:24:34 EST 2001 | C.K.
What kind of flux is that: no-clean, water soluble, or rosin?
Electronics Forum | Thu Jan 11 09:53:14 EST 2001 | Peter Barton
What type of spray fluxing system are you trying to implement?
Electronics Forum | Tue Nov 09 16:27:21 EST 2004 | davef
A PQFP208 is 20 thou [0.5 mm] pitch.
Electronics Forum | Tue Nov 01 12:18:09 EST 2005 | chunks
Is this causing shorts? Or are your pads that wide?
Electronics Forum | Mon Oct 31 08:29:51 EST 2005 | chunks
Shifting? Please describe the "Shifting". I.E. is it centering, sliding to cause shorts..... Most 208s will self center. If it's causing shorts, first check your print to make sure it is on the pads. Next check placement. Another area to check
Electronics Forum | Mon Oct 31 09:52:23 EST 2005 | slthomas
The only problems I've ever had with 208's shifting out of alignment was with a board with too much HASL thickness. The lands had a convex profile and the parts kept slipping downslope. We put down a glue dot and ranted at our board supplier. Both
Electronics Forum | Thu Jul 15 15:37:04 EDT 1999 | David
| i have worked with the universal gsm in the past and am now helping out a contracting company who is setting up one in their facility. My question is: the power requirments for the machine calls for 3-phase 230V, does it really need 230V or is the
Electronics Forum | Tue Aug 05 12:05:20 EDT 2003 | dougt
It looks like I could setup a UPS on this machine one of two ways. The first would be a 3 phase, 208V UPS in series with the machine (sounds big and expensive). The second is a single phase 208V UPS to just the 2 computers. I have a safety concern