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CV2135 low noise low microphony amplifier pentode

Size This valve measures 54x19mm overall and has a B9A base.


Heater voltage 6.3V
Heater current 150mA
Max anode voltage 300V
Max anode dissipation 750mW
Anode current * 2.1mA
Max screen voltage 125V
Screen current * 0.6mA
Max screen dissipation 0.1W
Mutual conductance * 1.25mA/V
Inner amplification factor * 20
Capacitances (without metal shield)
Cin nom 4.25pF
Cout nom 4.0pF
Ca,g1 max 0.01pF
*: At Va=250, Vg2=100, Vg1=-3.


Pin Function
1 n/c
2 Control grid
3 Cathode
4 Heater
5 Heater
6 Shield
7 Anode
8 Screen grid
9 Suppressor grid

This file was last modified 23:10:20, Wednesday February 23, 2022