30 @ The Valve Museum

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30

Sensibly equivalent^¶ to:

230 30S CV604 CX330 ER30 UX230 VT-27

Extras ▼

Champion The Hampshire Collection Other 30 exhibits

The Type 30 is a general purpose directly heated amplifier triode for use in battery receivers.

The bright anode and single hairpin filament.

Looking down on the dome the oxide coated filament can be seen as can the electrode spacings.

The lower end of the anode with the grid wires visible.

The classic envelope is 38 mm in diameter and, excluding the UX4 base pins, is 90 mm tall.

References: Data-sheet, ¹⁰⁴⁰ & ¹⁰⁴³. Type 30 was first introduced in 1930. See also 1930 adverts.

Pin Connections

UX4	1	2	3	4
	f	p	g1	f

Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.06	135	-9.0	3.1	10,300	0.9	9.3

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated February 23, 2022.

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