Electronics Forum | Sun Feb 23 14:51:02 EST 2003 | davef
Without being clear on whether you're talking about: * Standard air knives at the back-end of your in-line cleaner ... OR * Hand held or similar nozzle. Standard air knives: This causes no problem with ESD because the relative humidity is so high t
Electronics Forum | Mon Feb 24 17:56:55 EST 2003 | MA/NY DDave
Hi Let me just give a little and someone else might chip in with fast and ready details. I don't know what your product or service is, so I am not sure how direct to the FDA you need to be for your shop. If you work for someone they should handle t
Electronics Forum | Tue Feb 25 14:11:42 EST 2003 | MA/NY DDave
Hi, Good Notes from others. A few web sites of the piles available. http://www.imdmc.org Indiana Medical Device Mfgs Council http://www.mmda.org Michigan's http://www.raps.org Regulatory Affairs Professional Society The last time I was involve
Electronics Forum | Mon Mar 03 13:22:20 EST 2003 | MA/NY DDave
Hi I see David F already gave a good answer. The basic advantage, if you can afford it, is a more stable PCB during the soldering process. Higher Tg enables this. Also some materials serve to match CTEs (coefficient of thermal expansion) a bit bett
Electronics Forum | Fri Feb 28 08:57:34 EST 2003 | davef
We used to bake [100*C for 6 hours] all of our boards, but no longer bake at all. Before going off, your bake recipe is probaly OK. If anything, it's probably too short. Consider measuring the weight of wet boards, baking for a time, measure, bake
Electronics Forum | Thu Feb 27 12:23:47 EST 2003 | woodsmt
James, Have you considered going to a No-clean process? BGA's can be difficult to impossible to clean using an aqueous process. The water just won't penetrate under the entire BGA and efficiantly remove your flux residues. The tighter the pitch
Electronics Forum | Thu Feb 27 16:38:01 EST 2003 | russ
James, The last time I evaluated in-line cleaners (2 yrs ago)the Aquastorm was by far the best. They were the easiest to maintain, acheived the highest cleanliness level (per in-house testing with omegameter 600 heated solution), and were the quiete
Electronics Forum | Fri Feb 28 10:32:45 EST 2003 | pjc
Cookson Electronics Equipment- Electrovert AquaStorm 200 highly recommended options: Checkmate Conveyor Hurricane Jets in Wash and Rinse 4 Additional Top Spray Bars in Wash *Closed Loop Filtration System for Wash *Positive Displacement Chemical Meter
Electronics Forum | Thu Feb 27 14:02:26 EST 2003 | russ
Genny you are right on with the differences between suppliers/packaging etc... I am a CEM and you are correct that we pay no heed to cad rotations from our customers/designers. A.V.L./manufacturers P/Ns information specifies orientations and such.
Electronics Forum | Thu Feb 27 14:41:48 EST 2003 | jax
Cad rotation should not change with relation to how the part is presented to the machine. It should only depend on how the part is orientated on the PCB when the PCB is at 0 rotation. There is a seperate field to input part rotation inside a feeder.
