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CV3885 / EF40 audio pentode

This valve measures 60x21mm overall and has a B8A base

Heater voltage6.3V
Heater current200mA
Max anode voltage (Ia=0)550V
Max operating anode voltage300V
Max anode dissipation1W
Max screen voltage (Ig2=0)550V
Max operating screen voltage200V
Max screen dissipation200mW
Max cathode current6mA
Max heater-cathode voltage100V

4Suppressor grid
5Control grid
6Screen grid
7Cathode + shield

The valve carries the markings 'L89 F1H1'

CV3885 / EF40

This file was last modified14:46:35, 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.