If I'm sharing a circuit for educational purposes, I want to make sure that my parts are common generics. I'd much rather specify "2N3904" than "ON Semiconductor MMBT3904". But not all 2N3904s are created equal.
Suppose I design a circuit that does have a big inrush that rapidly drops (for instance, charging a capacitor). If I look at the ON Semiconductor sheet, I think that it can handle 4A, so I calculate accordingly. Then, I write "1N4148" on my schematic, post the design to the web, and move on. Somebody reads my article, pulls a Vishay diode, and tries to build my circuit, only to see the magic smoke escape their diode.
If I'd read the JEDEC-registered datasheet for the 1N4148, then I wouldn't have this problem. I'd know the ratings that every 1N4148 must meet, and could design around that.
If you think the IFSM example is farfetched and want a different one, note that the VRRM is 100V for the ON Semiconductor and Vishay diodes, but only 75V for Diodes Inc. Or just try to find a 2N2222 datasheet at all (i.e., one without a trailing A, leading P, etc).
However, I haven't found an archive of the JEDEC datasheets for jellybean parts like this. Does anybody know how I can get this information?