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7077

 
    
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The 7077 is a sub miniature UHF amplifier triode. It is resistant to shock, vibration and nuclear radiation. Operation in grounded grid mode is shown in the data-sheet.
Probably not designed for domestic TV sets!
Top to bottom: anode, control grid, cathode ring and heater pins. The date looks like April 1968.
The flat top to the gold plated anode.
The thin ceramic tube envelope is 8 mm in diameter and, excluding the base pins, is 10 mm tall.
Reference: Data-sheet. Type 7077 was first introduced in 1962.

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
6.3
0.3
250
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 17, 2021.
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