Sensibly equivalent¶ to:
This 12A6 metal valve was made by RCA in America. This exhibit is also marked as distributed by Brimar and was thus clearly destined for the UK market. The 12A6 was designed for use in the single end audio output stages of radio receivers.
The picture of the other side of the valve shows how the RCA name is also present.
The thin metal tube envelope is 25 mm in diameter and, excluding the IO base pins, is 67 mm tall.
References: Datasheet, 1040 & 1043. Type 12A6 was first introduced in 1942.
Absolute Maximum Operating Conditions¶
Updated January 28, 2013. shape:thin.metal.tube construction:glass.disc type:beam.tetrode age:1940.1950 base:io heater:12.6v pins:8 pin:1.m pin:2.h pin:3.a pin:4.g2 pin:5.g1 pin:6.- pin:7.h pin:8.k