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CV5281 double triode

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

This is a high-slope double triode designed for use in VHF cascode amplifiers. Triode 1 is normally operated as a grounded grid stage as a low noise input amplifier. The shield connected to the grid of triode 2 keeps coupling between the two units to a minimum.

Heater voltage 6.3V
Heater currrent 335mA
Max operating anode voltage 180V
Max anode dissipation 2W
Max total anode dissipation (both sides) 2.5W


Pin Function
1 Cathode 2
2 Grid 2 + shield
3 Anode 2
4 Heater
5 Heater
6 Grid 1
7 Cathode 1 (in)
8 Cathode 1 (out)
9 Anode 1