EL33 @ The Valve Museum

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EL33

Sensibly equivalent^¶ to:

6AG6G 6M6G BVA266 CV2938 KT61 N147 PP6BG

See also:

Mullard Valves for Domestic Receivers Advert

Extras ▼

Mullard HMS Collingwood Other EL33 exhibits

The EL33 audio output valve is the little brother of the EL37 with which it shares pin connections. Mullard describe this valve as a high sensitivity output pentode for use in AC mains equipment. The EL33 could be used in push pull to deliver 8 Watts, but the normal use was in domestic radio receivers as a single ended stage.

The classic envelope is 42 mm in diameter and, excluding the IO base pins, is 104 mm tall.

References: Data-sheet, ¹⁰⁴⁰ & ¹⁰⁴³. Type EL33 was first introduced in 1938. See also 1938 adverts.

Pin Connections

IO	1	2	3	4	5	6	7	8
	m	h	a	g2	g1	nc	h	k

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	D
	6.3	0.9	250	250	-6	36	4	50,000	9	4.5	10%

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated January 07, 2022.

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