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AR8 / CV1306 double diode triode

Size This valve measures 93x30mm overall and has a Mazda Octal base.


Filament voltage 2V
Filament current 50mA
Max anode voltage 150V
Mutual conductance * 1.2mA/V
Amplification factor * 25
Anode impedance * 21k ohms
Cag 3.5pF
Ca - all 10.0pF
Cg - all 5.5pF

*: At Va=120, Vg=-1.5

Pin Function
1 Filament -ve
2 n/c
3 Anode
4 n/c
5 Diode 2
6 Metallising
7 Diode 1
8 Filament +ve
TC Control grid



This AR8 is marked incorrectly as CV1307. The CV1307 is a completely different valve.AR8 marked CV1307

AR8 donated by Chris Colebrook


This file was last modified 23:10:14, Wednesday February 23, 2022