Electronics Forum | Mon May 19 09:29:59 EDT 2003 | bradlanger
Dave, We are using Kester Easy Profile 256 No clean Sn62Pb36Ag02. The oven itself is a Dima SMRO-0252 which is a short oven, it has 13" of preheat, 13.5" of soak, 6.25" of reflow, and 10" of cooling on the way out of the oven. We are soldering multi
Electronics Forum | Wed Jul 23 05:47:53 EDT 2003 | iman
Yo Thanks! right on the money pad, the pinhole occurs mainly in the (fillet's) top-surface central of the whole solder (fillet surface) area. Like you said, large surface area, lowest surface tension. that's a possible cause, that the potential voi
Electronics Forum | Tue Aug 05 12:05:15 EDT 2003 | mleber
Through hole question - what methods can be used to obtain upflow on multi layer pwbs with huge ground planes. We are using a water soluble flux with a max temp of 220 topside. I am pushing the limits of the flux and hitting 250 topside in an attempt
Electronics Forum | Wed Feb 18 16:38:47 EST 2004 | agp
Dean,Chris,Steven, Thanks for all your inputs. I have met with our smt staff and scheduled an evaluation by early next week based on your suggestions. I'll be happy to relay positive feedback afterwards. To be more detailed, here are our set-ups as
Electronics Forum | Mon Aug 16 04:55:30 EDT 2004 | roel
Concerning the solder-balls, there are a few causes for this. Try to slow down your solder-speed (P.e 80cm/min). Can you measure temperature after the pre-heat zone? Are there also blow-holes in the joints? Personally I think there is some water in t
Electronics Forum | Thu Sep 02 10:41:41 EDT 2004 | dj_jago
Other way around Dave. We decided that the Delta had more in common with the Electra rather than the Vectra, the Electra being much more expensive. For example, we wanted 3 preheat zones for lead free and this would mean an exernal fluxer unit if
Electronics Forum | Tue Dec 28 09:21:22 EST 2004 | pjc
In almost every application an ultrasonic spray fluxer will out perform foam fluxing. Better soldering results are what most expereince after making the change to U/S spray. There are good ultrasonic units from USI and Sono-Tek. www.ultraspray.com w
Electronics Forum | Fri Jan 07 09:56:04 EST 2005 | davef
Electroformed stencil suppliers follow. The describe the stencil production process on their sites. * Aplpha Metals [ http://www.alphametals.com/products/ stencils/pdf/PG_Electroform_Stencils.pdf ] * Chepaume [ http://www.chepaume.com/electroforming
Electronics Forum | Thu Jan 27 11:23:45 EST 2005 | russ
Well first off I wouldn't evaluate paste for a wave process. I would use solder bar instead. Flux - top side fillets and no shorting on the solder side, does it clean well after processing if using water soluble flux. How wide is the process win
Electronics Forum | Tue Mar 29 13:51:17 EST 2005 | jdumont
Finally, another soul with one of these waves! We have had ours since bought new in 1983. Great machine. Unfourtunately I do not have the manual either. I can tell you now to find preheater elements and hourd them. A few of them go bad every 6-12 mon
