Electronics Forum | Mon Apr 09 19:50:33 EDT 2012 | action_101
Hello, We're building some boards with 01005's and the only issue we are running into is the solder is not reflowing. It's the damnest thing, we are having no issues with the printing process or placing the components, the two areas we thought we wo
Electronics Forum | Wed Jun 27 03:43:24 EDT 2012 | allgood
Very interesting - esp that you have removed the temperature variable by being airconditioned. We defeinitely do not get strikes at 74 but do at 80 - but also we dont start the machine when its 80, that is the afternoon tempertaure on a rare hot day
Electronics Forum | Thu Jun 28 15:22:59 EDT 2012 | spitkis2
Would like to ask end users or those with experience using infra red rework equipment (specifically when the top heater is IR) the following: 1. Can you successfully rework Package On Package (PoP) type devices? With heat directed through the packa
Electronics Forum | Thu Nov 15 10:19:05 EST 2012 | davidmercader
Hi, We have problems with our wave soldering process. The problem is that during the same assembly, after wave soldering, some pcb’s look not clean and other pcb’s look good. We use lead free SAC305 solder and flammable flux. We think our proces
Electronics Forum | Thu Feb 21 14:40:42 EST 2013 | hegemon
My own preference in this arena is towards the forced air convection style preheat, the key being the forced air. Radiant preheat is too slow for some, and IR preheat can have other issues that convection (or radiant) will not. Zephyrtronics has bee
Electronics Forum | Thu Mar 14 13:31:10 EDT 2013 | sarason
I don't know your oven but I have dealt with high temperature ovens/furnaces before. These would be my thoughts. Change in the resistivity of the heating element due to aging. Blockage of air flow in the oven by buildup of soot/ debris in either th
Electronics Forum | Thu Mar 14 13:48:18 EDT 2013 | cyber_wolf
The entire oven is clean there are no blockages and the heater plates are brand new. I have worked with Vitronics technical support and gone through this thing with a fine tooth comb. I have even gone as far as to compare the exhaust and intake cap c
Electronics Forum | Wed Apr 03 04:08:20 EDT 2013 | ericrr
Yes well, now we used to add a bit of flux to our leaded paste to make it slightly runny, But when we went to unleaded paste the joker who came in from another company to set the temperature on the oven said "you dont add anything to unleaded paste!.
Electronics Forum | Thu May 02 15:29:19 EDT 2013 | jim_n_hky
I can't answer your specific question on the floor, but I have some suggestions. The equipment manufacturer should be able to provide the floor loading requirements. A structural engineer should be able to translate that into specs for hte constructi
Electronics Forum | Thu Nov 07 15:06:11 EST 2013 | hegemon
1st X-Ray looks pretty good. One instance of what looks like solder migration in the lower left quadrant. 2nd X-Ray shows a number of locations where the solder has migrated into the vias, shown by the small dark circles between the main spheres.
