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12A6

Sensibly equivalent to:
12A6Y CV525 VT-134
See also:
Metal Striptease - Ferranti 12A6 Box
    
Extras ▼

 

The 12A6 was designed for use as a single end audio output stage for radio receivers. The Ferranti details give a cathode resistor of 375 Ω and a load resistance of 7,500 Ω. The original design was American.
The base has pin 6 omitted.
The thin metal tube envelope is 25 mm in diameter and, excluding the IO base pins, is 67 mm tall.
References: Datasheet & 1040 Type 12A6 was first introduced in 1942.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
-
h
k

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
12.6
0.15
250
250
-12.5
30
3.5
70k
3.0
2.4
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated May 31, 2016.
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
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