H30 @ The Valve Museum

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H30

Sensibly equivalent^¶ to:

CV2979

See also:

Acoustic Aberration Advert - MH41 & H30 Advert - Universal Valves Advert

Extras ▼

Marconi Photographic Donations

The H30 is a high-μ triode with a 300 mA heater. The heater at 13 Volts and 300 mA was designed for use in Ac/DC receivers or from 12 Volt vehicle batteries.

It was designed for low microphony. The L30 is the low impedance version and has the same heater requirements.

The Marconi name on the reverse.

Thanks to Mark from Vintage-parts for sending these images.

The classic envelope is mm in diameter, and excluding the B7 base pins is mm tall.

References: Data-sheet, & ¹⁰⁴³. Type H30 was first introduced in 1934. See also 1934 adverts.

Pin Connections

B7	1	2	3	4	5	6	7	tc
	m	nc	nc	h	h	k	a	g1

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	13.0	0.3	250	-1.7	5.5	13,300	6.0	80

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated July 02, 2023.

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