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The 6DL5 is an output pentode with low heater consumption designed initially for car radios. It would also provide adequate audio power for a domestic receiver or smaller stereo system.

Used in push-pull it could produce six to seven Watts of output.

The B7G base pins

Thanks to Mark Mallison for sending the images.

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

References: Data-sheet, ³⁰⁰² & ¹⁰⁴⁰. Type 6DL5 was first introduced in 1955. See also 1955 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.