CV131 @ The Valve Museum

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CV131

Sensibly equivalent^¶ to:

9D6 CV4015 EF92 V884 W77

Extras ▼

Marconi The Hampshire Collection Other CV131 exhibits

The CV131 is a general purpose amplifying pentode. The commercial equivalent is the EF92 and the M8161 is a special quality version.

The Marconi brank label.

The thin glass tube envelope is 18 mm in diameter, and excluding the B7G base pins, is 43 mm tall.

References: Data-sheet & ¹⁰⁴⁰.

Pin Connections

B7G	1	2	3	4	5	6	7
	g1	k	h	h	a	g3	g2

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.2	250	150	-0.65	8	2	0.5M	2.5

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated September 26, 2025.

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