The 6F28 is an amplifier pentode of high mutual conductance designed for television service. It could be used as an IF amplifier but in that application variable-mu pentodes were the first choice. This probably was designed for use as a video amplifier where the high mutual conductance makes it easier to achieve a reasonable stage gain and wide bandwidth.

The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 52 mm tall.

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.3	180	180	-2.9	10.0	2.5	0.31M	12.5

This exhibit was last updated on 03 March 2005