CV131

Brimar 9D6 / CV131 / W77 HF vari-µ pentode

Size

This valve measures 54x17mm and has a B7G base

See also CV2023 which is a modified version.

Heater voltage	6.3V
Heater current	0.2A
Max operating anode voltage	300V
Max anode voltage (Ia=0)	500V
Max operating screen voltage	300V
Max anode dissipation	3W
Max screen dissipation	0.7W
Mutual conductance (Va=250; Vg2=200; Vg1=-2.5)	2.5mA/V

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

9D6

CV131/W77 markings