Type 8012 is a VHF/UHF transmitting triode and dates from the early 1940s.

The control grid can pass up to 14 mA grid current and dissipate 1.6 W. The maximum frequency of operation is probably in the region of 500 MHz.

The side pins extend to 60 mm. The anode is connected to the set furthest from the cathode. The grid is connected to the set of pins on the left of the picture. The three base wires connect to the heater and cathode.

The evacuation seal is within a re-entrant cavity at top of the envelope.

The thin glass tube envelope is 25 mm in diameter and, excluding the base wires, is 92 mm tall.

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	μ	Pout
	6.3	1.92	1000	-90	50	18	35W

Thanks to Frank Philipse for supplying the above datasheet

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This exhibit was last updated on 18 July 2007 {find valves by name}