5651 @ The Valve Museum

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5651

Sensibly equivalent^¶ to:

QS1209

See also:

SQ Voltage reference tubes

Extras ▼

English Electric TNMoC The National Museum of Computing - Valves Other 5651 exhibits

The 5651 is a small, special quality voltage stabiliser. The striking voltage is 115 Volts and the maintaining voltage is 86 Volts. For a tube current variation of 1.5 mA to 3.5 mA. The 5651 is essentially a voltage reference for use in a stabilised power supply.

The internal coating hides all internal structure.

The thin glass tube envelope is 18 mm in diameter and excluding the B7G base pins, is 46 mm long.

References: Data-sheet Type 5651 was first introduced in 1948. See also 1948 adverts.

Pin Connections

B7G	1	2	3	4	5	6	7
	a	k	ic	k	a	ic	k

Absolute Maximum Operating Conditions^¶

Stabiliser	Va
	86

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated August 06, 2020.

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