The EC53 is an UHF triode that can operate at up to 600 Mhz.

In side view the grid wires are visible. The anode is formed from two pieces pressed together.

The heater can be seen entering the oxide coated cathode. Also visible are the mica supports.

The thin glass tube envelope is 15 mm in diameter, and excluding the B3G base pins is 37.5 mm tall. Overall the length is 52 mm

 
Pin Connections

B3G	1	2	3	tc	tc
	h	k	k	a	g1

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	6.3	0.25	200	-3.3	7.5	11,400	2.9

This exhibit was last updated on 05 January 2008