9D2 @ The Valve Museum

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9D2

Sensibly equivalent^¶ to:

12VPA ARP3 C50N CV1106 CV1321 VP1322 VP13C VR106

See also:

Brimar Ten Times Tested Advert - CV1106 short entry

Extras ▼

Brimar Donation by Crowthorne Tubes Other 9D2 exhibits

The 9D2 is a variable μ RF pentode. The 200 mA heater requirement indicates that this valve is suitable for series heater chain use.

The original Brimar paper label is still mainly present. The outer wording is Standard Telephones and Cables Ltd the UK subsidiary of ITT and the maker of Brimar valves. Brimar standing for - BRItish Made American Range.

The classic envelope is 39 mm in diameter, and excluding the B7 base pins is 99 mm tall.

References: Data-sheet & ¹⁰⁴³. Type 9D2 was first introduced in 1934. See also 1934 adverts.

Pin Connections

B7	1	2	3	4	5	6	7	tc
	nc	a	g3	h	h	k	g2	g1

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	13	0.2	250	125	-1	10.0	3.5	0.6M	1.65	1,000

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated January 04, 2022.

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