The 6K7 pentode was designed for intermediate frequency amplifiers in 'modern' superhet type receivers during the mid 1930s. It is high impedance allowing for a high Q in the tuned anode circuit.

See also 6K7G for the glass envelope version.

The thin metal envelope is 25 mm in diameter and, excluding the IO base pins, is 60 mm tall.

 
Pin Connections

IO	1	2	3	4	5	6	7	8
	m	h	a	g2	g3	nc	h	k

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.3	250	125	-3	10.5	2.6	0.6M	1.65

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 04 June 2007 {find valves by name}