MSP41 @ The Valve Museum

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MSP41

Sensibly equivalent^¶ to:

CV3562

See also:

Some Important British Valves

Extras ▼

M-OV Photographic Donations

The MSP41 is a 1936 improved version of the 1933 MSP4 amplifier pentode. The total cathode current is given as 12 mA whereas the MSP4 cathode current is given as 4.3 mA.

The application was as a TV RF amplifier. This improved version was marketed but had few takers since the real requirement was for high-slope types such as the KTZ41 (which had a nominal gm of 12.0!).

Thanks to Mark from Vintage-parts for sending these images.

The classic envelope is 42 mm in diameter and, excluding the B7 base pins, is 121 mm tall.

References: Data-sheet, private communication & ¹⁰⁴³. Type MSP41 was first introduced in 1936. See also 1936 adverts.

Pin Connections

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

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	gm
	4.0	1.0	250	240	-4.0	3.2

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated February 27, 2017.

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