The CV3998 is a high slope RF beam tetrode primarily intended for use in wideband amplifiers in telephone carrier systems, radar equipment and measuring equipment.

This very small size helps to reduce inter electrode capacitance and thereby raises the maximum usable frequency that the device can operate at.

The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 33 mm tall.

 
Pin Connections

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

 
Absolute Maximum Operating Conditions

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.3	190	160	-1	13	3.3	35K	16.5

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 04 July 2009