S435N @ The Valve Museum

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S435N

Sensibly equivalent^¶ to:

MS/Pen MSP4 SP4

See also:

S.434N S.435N A.440N P.440N S.2034N S.2035N A.2040N & P.2020N Advert - S.2034N, S.2035N, P.2020N, G.3070, A.2040N, S.434N, S.435N, A.440N & P.435 Advert

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Triotron HMS Collingwood

The S.435N is an indirectly heated HF pentode introduced in 1933. The original version was on a B5 base but a B7 based version was marketed from 1935.

The balloon envelope is 46 mm in diameter and, excluding the B5 base pins, is 116 mm tall.

References: Data-sheet, ¹⁰⁴⁶ & ¹⁰⁴³. Type S435N was first introduced in 1933. See also 1933 adverts.

Pin Connections

B5	1	2	3	4	5	tc
	g2	g1	h	h	k,g3	a

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	4.0	1.0	200	100	-2	-	-	-	3.5	5,000

PDF scanned from an original document held by the museum

Updated March 20, 2023.

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