The CV850 is a low noise RF voltage amplifying pentode, designed to operate at VHF.

See also 6AK5 for more details.

The thin glass tube envelope is 17 mm in diameter and excluding the B7G base pins measures 36 mm tall.

References: Datasheet & ¹⁰⁴⁰. Type CV0850 was first introduced^¶ in 1952.

 
Pin Connections

B7G	1	2	3	4	5	6	7
	g1	k	h	h	a	g2	k

 
Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.175	180	120	-2	7.2	2.4	0.7M	5.1

Thanks to Frank Philipse for supplying the above PDF datasheet