The 2C39A is a planar design of disc seal construction. This UHF triode was designed for use in a resonant cavity with forced air or water cooling.

The very small gap between the long Copper anode and the grid mesh is visible in the above picture.

The planar envelope is 32 mm in diameter and 66 mm tall.

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	mAa	f.max	Pout
	6.3	1.0	1000	100	2400	20W

Thanks to Frank Philipse for supplying the above datasheet

More

This exhibit was last updated on 02 July 2007 {find valves by name}