Electronics Forum | Thu Sep 17 04:48:51 EDT 2009 | grahamcooper22
The colour you see on the pads is tin/copper intermetallic layer. In your reflow the immersion tin coating and the copper pad underneath react to form in intermetalic layer. The effect is worse the hotter the pcb or area of the pcb gets. In IR reflow
Electronics Forum | Tue Sep 22 16:39:10 EDT 2009 | rmitchell
Hi, We are getting a E-Hydra-1 Frame grabbing failed on caps and resistors and also a Light Curtain trigger X wagon. I spoke with mydata and they indicated the light curtain might be getting set off and causing the frame grabbing failure. I cleane
Electronics Forum | Wed Sep 23 08:17:46 EDT 2009 | kpm135
I've run into mysterious light curtain errors before and what was happening was when the head moved across the top of the components one of the clear tape covers would flutter up and trigger the curtain then it would settle back down on top of the ta
Electronics Forum | Wed Sep 23 08:19:52 EDT 2009 | rgduval
Check to see if there's a loose cable, or something, that's randomly setting off the light curtain. We occasionally have that problem with some of our flex or 12/16 mags in our TP9, where the tape take up clip is loose (nothing in that feeder) and i
Electronics Forum | Wed Sep 30 13:13:16 EDT 2009 | mikesewell
I never calculate it when I setup a profile...I have a feel for our fluxer setting and adjust based on belt speed and width. I also have different nozzles and a pressure setting to play with. Inspect the bottom of the board for good coverage. Runn
Electronics Forum | Fri Oct 23 12:41:25 EDT 2009 | stepheniii
I used Mirtec's 5 years ago. At this place we have Vi-techs. I can see why the people who recommend Vi-techs do so. They are good machines. However overall I would recommend the Mirtechs. They were faster and easier to program. And they were were a
Electronics Forum | Wed Oct 28 19:48:33 EDT 2009 | lgroves
Hi, The machine is a Samsung CP45FV-Neo. Is > there a way to set the level of control operators > have over a program? We'd like to have a program > which can't be changed, except by a technician. I > can't see any way of doing this with the mach
Electronics Forum | Mon Oct 19 12:17:16 EDT 2009 | wrongway
We have yet had the need to use local fids on our boards you must be putting down pretty fine pitch parts that are needing the acurcey if it is failing fids that are within the search area then maybe its somthing else size our lighting it should fin
Electronics Forum | Mon Oct 26 12:56:23 EDT 2009 | rgduval
Eric, Protective sleeve? The sleeving protecting the wires of the thermocouples? I bought mine direct from Heller. I think it was $90 for a set of 3 (my oven uses 3 thermocouples). They are close to thirty feet long (I'm guessing...they're much
Electronics Forum | Tue Oct 27 16:22:00 EDT 2009 | davef
It's not the first thing we think of in looking at your picture. First off, the lack of copper in the region of the red oval makes us think of a plating defect. We don't expect that moisture out-gassing through the barrel wall to show-up on opposite
