The E83F Mullard pentode is a special quality version of the EF83. The operating details are taken from the Philips Pocketbook for Hams 1962.

The valve was designed for class A audio amplification. The audio output was 0.87 Watts and the maximum anode dissipation was 2.1 W.

The thin glass tube envelope is 19 mm in diameter and, excluding the B9A base pins, is 57 mm tall.

 
Pin Connections

B9A	1	2	3	4	5	6	7	8	9
	g2	g1	k	h	h	a	ic	ic	g3,s

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	mAa	mAs	ra	gm
	6.3	0.3	210	120	10	2.1	0.5M	9.0

Thanks to Frank Philipse for supplying the above datasheet

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