The PC900 is a miniature UHF amplifier triode. It is low impedance and has a high mutual conductance. This is partly achieved by a very low cathode to grid spacing. The anode is made of two rectangular channels, one either side of the cathode. The beam plates form the electrons into two beams.

The PC900 is an improvement on the PC97.

The thin glass tube envelope is 17 mm in diameter and, excluding the B7G base pins, is 32 mm tall.

References: Datasheet, ³⁰⁰² & ¹⁰⁴⁰. Type PC900 was first introduced^¶ in 1963.

 
Pin Connections

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

 
Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	0.3	200	-0.5	17	5,000	14.5

Thanks to Frank Philipse for supplying the above PDF datasheet