Electronics Forum | Tue Dec 23 19:27:01 EST 2003 | davef
A more active flux may help, but if the nickel underplate on the component body is corroded [and not soldering], if could require a VERY active flux. Just an off-the-wall thought, are you sure that your heat recipe activates the flux properly? Slow
Electronics Forum | Wed Dec 17 18:56:02 EST 2003 | Chandler
Kev, You seem to have a very good knowledge of your process and can convey it clearly and precisely. My advise to you is to dis-regard the BS most of these guys churn out and follow your own gut. They will ask a s**t load of irrelevant Q's in some fu
Electronics Forum | Tue Dec 16 16:14:20 EST 2003 | Bill
We are in need of a replacement conveyor belt for an unload-end conveyor(post wave solder). The part number we had at one point (formerly PCT automation) was 65-4008-4 (Belt, Flat-W=23.75 L=171.70) green high temp conveyor belt. Any help would be g
Electronics Forum | Tue Dec 16 17:30:05 EST 2003 | davef
Tech-Mation International 952 Alton Parkway Irondale, Al 35210 205-833-4277 (fax) 4377 Phil Higgins, Mathew Bennett (sales) Eric Ford (sales) tiusa@bellsouth.net http://www.tech-mation.com We have no relationship, nor receive benefit from the comp
Electronics Forum | Fri Dec 19 10:15:24 EST 2003 | haviland
Bill--Good morning. We have several decline conveyors w/ conductive black belt Plus cool down units w/ banks of (8) fans. I believe the belt widths are 18". Would that work? Everything is in Illinois. Thanks, Nick Haviland, Electronic Assembly Machin
Electronics Forum | Tue Jan 13 22:43:11 EST 2004 | davef
We have seen this in reflowed parts, where there is flux res collected in the dimple in the solder, where the lead 'presses' in the solder. Generally, we attack this as a thermal issue: * Thermal pads sucking the heat away from the leads. * Leads no
Electronics Forum | Tue Jan 13 15:16:12 EST 2004 | drewhmi
A small benchtop system uses a mask, tooled for your part, to arrange the solder spheres onto the BGA, after it has had the excess solder heat-vacuumed off and a new layer of flux applied. The spheres are poured into the cavity, excess decanted off.
Electronics Forum | Wed Jan 14 03:45:45 EST 2004 | Bryan
Whether could we add some heating or cooling modules to the 8 zone reflow oven and convert the 8 zone to 12 zone or more?I 've never heard of anybody successfully done this.I think, this way, we could get more cost down.What's your opinions? Thanks®a
Electronics Forum | Wed Feb 18 12:18:28 EST 2004 | babe
Sometimes this is related to oxidized paste or paste that has sat onthe board too long before reflow. However most likely this is related to your reflow process. either too slow or too fast of a reflow ramp rate. Heating up an assembly too quickly wi
Electronics Forum | Thu Feb 19 13:43:01 EST 2004 | northern
What would cause this? Too much pre-heat, not enough, too much dwell, not enough? I am staying within the flux specs for preheat and can't seem to affect it much. Can board/parts contamination lead to this? I think that is a reach but I'm runnin out