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CV4015 / M8161 reliable variable µ HF pentode

Size This valve measures 53x17mm overall and has a B7G base.

See also CV4084 which is the flylead version of this valve

Heater voltage 6.3V
Heater current 200mA
Max heater-cathode voltage +/- 150V
Max operating anode voltage 300V
Max anode voltage (Ia=0) 500V
Max anode dissipation 3W
Max operating screen voltage 300V
Max screen voltage (Ig2=0) 300V
Max screen dissipation 700mW
Mutual conductance (see note A) 2.45mA/V
Inner amplification factor (µg1 g2) (see note A) 30
Max grid 1 - cathode resistance for cathode bias 500k ohms
Max grid1 - cathode resistance for fixed bias 100k ohms
Max bulb temperature 200C
Max shock (short duration) 500g
Max acceleration (continuous operation) 2.5g
Capacitances (measured with close fitting metal screen)
Cin (nom) 4.5pF
Cout (nom) 7.0pF
Ca,g1 (max) 0.01pF

(Note A: measured at Va=250V; Vg2=200V; Vg3=0; Vg1=2.5V; Ia=8.25mA approx.; Ig2=2.1mA approx.)


Pin Function
1 Control grid
2 Cathode
3 Heater
4 Heater
5 Anode
6 Suppressor grid and shield
7 Screen grid

This file was last modified 23:10:28, Wednesday February 23, 2022