ECC804 @ The Valve Museum

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ECC804

Sensibly equivalent^¶ to:

6/30L2 6GA8 B729 CV5264

See also:

Valves and their Habits - Locked-Seam Cathodes

Extras ▼

Pinnacle Donation by Stephen Gough. Other ECC804 exhibits

The design is a general purpose double triode with a screen between the sections. The main application is in television receivers.

The twin sections with a bright electrostatic screen between. The control grids are wound on copper rods.

Seen face-on the anode plates are stitched together. The back plate is flat and the front plate is presses with a rectangular section.

The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 49 mm tall.

References: Data-sheet & ¹⁰⁴⁰

Pin Connections

B9A	1	2	3	4	5	6	7	8	9
	a(2)	g1(2)	k(2)	h	h	a(1)	g1(1)	k(1)	s

Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	6.3	0.3	200	-7.7	10.0	5.3k	3.4

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated November 08, 2024.

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