Joerg wrote: > > Totally OT here, quick question since you seem to be quite the expert on > this: Do you know some sort of main distributor or clearing house for > space-rated parts? Or is the only way to just piece it all together like > usual, via individual quotes from companies such as Solitron? > >
I don't know of any shortcuts. If you have a customer who insists on "space qualified" parts, you need to talk to them. Everybody has their own rules. If you're dealing with somebody with a lot of rules, you'll need a parts specialist to deal with them. This is more like lawyering than engineering. From an engineering perspective, "space qualified" is almost meaningless, since "space" is neither an environment nor an application, but a wide range of them. If the part that best fits your requirements is in stock at Digi-Key, use that. I've flown a lot of these with great success. "Space qualified" parts tend to fragile, obsolete junk that behaves unpredictably in actual applications. But they've been blessed by the priesthood. Regardless: Understand the mission. Understand the environment. Understand the physics of the interaction of the environment with the technology. Understand the requirements. In depth, not in the shallow, sloppy way that too many "designers" think adequate. There are no cribsheets, and "space qualified" is no guarantee of anything, except maybe on paper. God is in the details. Don't torque your parts selection around to solve issues better addressed at the system level. Not every part needs to be immune to radiation-induced upset, for example. -- John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ [email protected] _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
