Electronics Forum | Tue May 02 02:45:14 EDT 2017 | Rob
Hi Evtimov, I've seen lower cost versions around depending on your volume - Inertec Cube being the one most recently "introduced" to us. The Sales Engineer described a custom fixture for us called a stamp that would hit every joint at once. Noth
Electronics Forum | Thu Dec 17 10:04:28 EST 1998 | Chrys
Necessity is the mother of invention... The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. So I ran out to the local Radio Shack to see if the
Electronics Forum | Fri May 14 00:28:09 EDT 1999 | Mike D.
| I am seeing reflow around my signal pins after being subjected | to a profile of 204c for 1 minute and 225c for a min of 30 seconds. Signal pins are soldered into a copper plated alum. case with SB5 and then silver plated. The pins have a hot oil
Electronics Forum | Sat Nov 21 12:28:00 EST 2009 | flipit
There is evidence of lead being used in soldering 5000 years ago in Mesopotamia. Not a big issue for most people doing SMT but the poster should also understand why percent metal is adjusted for different solder paste alloys. You print by volume b
Electronics Forum | Thu Jul 03 13:10:39 EDT 2003 | slthomas
I snapped a board in half at a cracked solder joint, and the component pulled free of the solder and still has a very thin layer of metal on the termination end. Based on the construction spec.(solder over nickel over palladium), it looks like it
Electronics Forum | Mon Jul 14 12:24:02 EDT 2003 | MA/NY DDave
Hi So Steve, I must have missed something from your last subject topic. "solder fillet peeling" Are you saying you or they, Ultrasonic Clean for 20 to 30 minutes after soldering and that is suspected as causing the cracking at the top of the compo
Electronics Forum | Thu Nov 19 20:05:14 EST 2009 | davef
Density. There is a difference between lead (.410 lbs. per cubic inch) and tin (.254 lbs. per cubic inch). The same volume of tin-based solder, therefore, weighs approximately 1/4 less than a lead-based material. This adds up to more joints per pound
Electronics Forum | Fri Nov 23 18:16:08 EST 2007 | g2garyg2
I may be able to help but would need to understasnd more about your application. The rating on the diode laser can directly effect its ability to refelct or penetrate the solder, but I would lnot to rule out beam placement at the joint either. If yo
Electronics Forum | Mon Jun 01 17:41:20 EDT 2009 | gregoryyork
What is your squeegee pressure and size. Also does the pad sit on a ground plane, as it looks like it is partially reflowed so surface has gone but not coallesced properly which would indicate it is more a problem with reflow above 217-219C OR obviou
Electronics Forum | Mon Jan 19 20:25:52 EST 1998 | Steve Gregory
| I have a problem! The solder on my pc boards look great comeing out | of my reflow oven. They go thrue the rest of the prossese | and at the end at the qc station it's cold or whitish or gray not shiny. | does any one have a idea on how to correct
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