Electronics Forum | Thu Aug 07 15:41:12 EDT 2003 | gdstanton
To further clarify my question. I'm dealing with mixed solder technologies on a single assembly and am curious how the rest of you guys handle this. Do you use lead based reflow profiles or revert to lead free based profiles? If you haven't seen t
Electronics Forum | Thu Aug 07 16:52:49 EDT 2003 | craigj
We've been doing it for quite a while on some parts but are noticing that as more manufacturers are going lead free we are starting to see some issues. Particularily with pure tin on nickel. Have found that need to increase oven reflow temp and time
Electronics Forum | Thu Aug 07 16:00:02 EDT 2003 | caldon
Yes you are correct Barry. The Suction tape provides a flat surface for the PNP nozzle to pick -up. In some cases I have seen a plastic "cap" ove rthe pins to provide the same thing. The cap can be reused. Both require, unfortunatly, manual removal
Electronics Forum | Fri Aug 08 11:44:44 EDT 2003 | Henry
I am fairly new to wave soldering and production processes, but I have been tasked with coming up with a calculation involving the shear strength of some through-hole leads. The leads are tinned copper and I suspect that tinning reduces the shear st
Electronics Forum | Fri Aug 08 14:21:10 EDT 2003 | bman
Hello all, I'm working at a CM with less then ideal material storage shelving when it comes to ESD protection. I've got ordinary painted shelving units that I need make ESD safe. I'm considering dissipative mats or spray coatings for each shelf, t
Electronics Forum | Fri Aug 08 15:30:50 EDT 2003 | bman
Hello all, I'm working at a CM with less then ideal material storage shelving when it comes to ESD protection. I've got ordinary painted shelving units that I need make ESD safe. I'm considering dissipative mats or spray coatings for each shelf, t
Electronics Forum | Fri Aug 08 18:06:35 EDT 2003 | davef
Antistat sprays are a waste of time and money. These sprays just soaps disolved in water that absorb moisture from the air. Your minimum requirements: Conductive floor mats and wrist straps that are properly grounded. From there, consider using
Electronics Forum | Thu Aug 14 18:45:35 EDT 2003 | bman
An idea I just heard today would be to run a strip of copper tape across each shelf, then screw the tape into the shelf to ensure metal to metal contact. Considering the shelves seem to all have a path to ground through the supports, I don't see why
Electronics Forum | Mon Aug 11 11:51:53 EDT 2003 | ServGuy
Personally, I'd run 1 time recovery, and depending on chip-shooter model, I'd use 2nd station parts detection on larger parts with error stop. The situation you decribe, a couple caps an hour would'nt stop the machine unless they came from the same f
Electronics Forum | Mon Aug 11 11:52:05 EDT 2003 | ServGuy
Personally, I'd run 1 time recovery, and depending on chip-shooter model, I'd use 2nd station parts detection on larger parts with error stop. The situation you decribe, a couple caps an hour would'nt stop the machine unless they came from the same f
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