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CV302 triode heptode

Size This valve measures 78x32mm overall and has a B8G base.

Heater voltage6.3V
Heater current330mA
Max heptode anode voltage300V
Max grid voltage-0.3V
Max grid 2 and 4 voltage100V (Ia=3mA)
300V (Ia<1mA)
Max triode anode voltage175V
Max triode anode dissipation0.8W
Max grid-cathode resistance3M ohms
Typical operating conditions
(Heptode section)
Anode voltage250V
Grid 3 resistor50k ohms
Grid 3 current200µA
Grid 1 voltage-2.0V
Anode current3mA
Grid 2 - grid 4 current6.2mA
Internal resistance1.4M ohms
Conversion conductance750µA/V
C triode grid/grid 39.3pF
Ca heptode/a triode2.1pF

2Heptode anode
3Triode anode
4Triode grid, grid 3
5Grid 2, grid 4
6Grid 1
7Cathode, grid 5, internal shield
SpigotMetal shell


This file was last modified14:54:23, Tuesday September 02, 2014

  FOR SALE: Note that any valve which is not CV marked is now for sale. Contact me via email - see the home page.