On 2010-01-10, Spehro Pefhany wrote:

[ ... ]

I miss LASCRs (light activated SCRs), SBS (Silicon bilateral
switches), tunnel diodes, germanium transistors, clean air, tuna,
Taiwan.

How many here have ever heard of a "binistor"? A 4-pin bistable
device which apparently never took off in the market. It was a
four-layer device (like a SCR -- except that it had another pin to allow
turning it off.

IIRC, Transitron gave it the designation 3N21. I could look it
up in the old Transitron data book -- but I don't know where that is at
the moment. :-)

Enjoy,
DoN.

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