1Ж36Б1j36b

This is a Short life Rod pentode for shell proximity fuses (Possibly also Rockets and Missiles) with great shock resistance (Russian lt: "Crash proof"). In Russian it's marked 1Ж36Б.

See also Russian Subminiature Tubes for general Information.

The life is quoted as 2 hours and 74mA current. It's possible it may have several thousand hours life and usable performance at 30mA filament current.  The 1П32Б (1p32b) appears to be for similar applications but higher power.

Please contact the Author if you know of equipment "using" it or stock for sale. Perhaps it could be tested at a more reasonable operational current.

Apparently this tube replaced the 1j26a 1Ж26А (also known as 1ZH26A)