In sci.electronics.design, "Walter Harley"
And it seems that happened many years back.
There was another thread on this recently, either here or
sci.electronics.components (which would be a better place to look). Except
the poster was looking for the Panasonic equivalent, and did find it.
Something like MN3307 or MN3007 or something like that. Go find the thread,
it had the part number.
It was my understanding that Panasonic still makes, and Digikey
still sells some BBD devices, but they're not compatible with the
venerable SAD1024.
Check out this thread from rec.audio.pro (this thread is the last I
remember reading about BBD's until now):
http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&[email protected]
That thread's a couple years old so I just looked in digikey, it
says the MN3214, MN3011 and all other BBD chips in that series are now
obsolete, so if you want BBD's you have to find them surplus or pull
them out of old equipment.