Randy Glenn wrote:

 > National
> Semiconductor's pretty good too, though they've started charging
> shipping if your email address is from certain domains (like, say, my
> school)

National does not charge shipping for samples to ".edu" domain email
addresses, but does limit those to 1 sample per week. Any more must be
paid for.

Another excellent source was (and still is, to some extent), On
Semiconductor. They used to be free, but now charge about $10 per sample
shipment (that can include 10 devices, from 5-25 pieces each, depending
on the actual price of the part).

Ah, and for FETs (and some oddities, like the 74C922/3 16/20-pin
keyboard handler chips --- fantastic when you don't want to bother with
the PORTB interrupt-on-change) there's Fairchild Semiconductor. They
also have a very nice selection of optocouplers, including some 10
Mbit/s ones that are great for doing up to 1 MHz PWM with HV stuff.

Other companies that provide free samples (but which I've never
personally tried) are Intersil (good line of high voltage
H-bridge/high-side drivers) and Linear Technology (analog odds and ends
and others).

Cheers,
-Ishaan

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