Electronics Forum: used (Page 136 of 2487)

Disadvantages of using the ultrasonic cleaners - PCB cleaning

Electronics Forum | Fri Aug 22 00:11:16 EDT 2008 | rameshr

Hai, I wish to know the advantages & disadvatages of using the Ultrasonic cleaners for cleaning the assembled pcb. Can anybody help us.

It is okay to use a toaster to bake components?

Electronics Forum | Tue Aug 26 08:40:41 EDT 2008 | wavemasterlarry

If you use a conventional toaster made for bread, youll have to turn it on its side. Most parts stay on in the up right position but when it pops up they all fall off cause the sodder is still flexable. My customer wasn't to happy about that.

It is okay to use a toaster to bake components?

Electronics Forum | Tue Aug 26 09:30:44 EDT 2008 | pcbbuilders

i acutally meant to bake components that are moisture sensitive before placing them. i just want to use a toaster (not the pop up kind), maybe the best way is to just get an oven thermomoter and see where the 125c setting would be on the toaster.

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Sat Sep 06 10:09:57 EDT 2008 | davef

We can't help but wonder: * What are the measured temperatures on a good solder connection and the picture connection? * Why use use Type 4 solder paste?

Electro-Deionization Systems

Electronics Forum | Thu Sep 11 16:16:17 EDT 2008 | adamcrum

I have actually figured out my question via some phone calls to different manufacturers of both types. ElectroDeionization completly eliminates the use of any filter medium but should be used in conjunction with a RO system for recirculation.

AOI Tabletop Suggestions

Electronics Forum | Tue Sep 16 15:23:59 EDT 2008 | bwelch

Does anyone one have any recommendations on type of table top to use for "tabletop" AOI machines. Someone suggested to me of using slate table tops or heavy duty suface tops. Does anyone have any ideas?

UV Curing Conveyor

Electronics Forum | Thu Oct 02 09:35:42 EDT 2008 | msangabriel

I have one brand new UV oven and 2 used ones. We used to cure Dymax conformal coating in this plant. We are selling those ovens.

99C solder

Electronics Forum | Wed Oct 01 10:01:15 EDT 2008 | davef

We've never used the 99*C lead-free solder you mention. We have used a leaded solder that can form a 93*C eutectic solder. So, we had to be sure the service temperature [of the solder connections] as below 80*C.

Fill a stencil openings with what?!

Electronics Forum | Thu Oct 09 15:26:08 EDT 2008 | wrongway

We use campton tape also but we use a ultasonic stencil cleaner and the tape will come off everytime its washed good luck

AOI Joint Inspection

Electronics Forum | Fri Oct 17 17:22:23 EDT 2008 | sys_steven

We use the Mirtec system and are very pleased with it's consistency and reliability. We also are satisfied with its ease of programming and ease of use for the operators. I do agree that the 5 camera system would be best, as well as the optional la


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