YD2 @ The Valve Museum

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YD2

Sensibly equivalent^¶ to:

220P LP2 P220 PM2A

See also:

Range Advert

Extras ▼

Triotron The Liverpool Collection Other YD2 exhibits

The YD2 from Triotron is described as a high slope power valve. This translates to a battery audio output valve.

The dome with the etched markings enhanced to make them easier to read.

The bright anode and support struts.

The electrode assembly is mounted at 45 ° within the envelope.

The balloon envelope is 48 mm in diameter, and excluding the B4 base pins is 88 mm tall.

Reference: Data-sheet Data & ¹⁰⁴³. Type YD2 was first introduced in 1930. See also 1930 adverts.

Pin Connections

B4	1	2	3	4
	a	g1	f	f

Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.22	200	-11	15.0	4,500	2.5	9

PDF scanned from an original document held by the museum

Updated August 27, 2024.

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