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CV1985 / 6SL7GTY / VT229 high mu double triode

This valve measures 77x32mm overall and has an octal base


Heater voltage 6.3V
Heater current 300mA
Max anode voltage 275V
Max anode dissipation (per side) 1.1W
Amplification factor * 70
Mutual conductance * 1.6mA/V
Anode impedance 44k ohms

*: At Va=250V, Vg=-2V


Pin Function
1 Grid "
2 Anode "
3 Cathode "
4 Grid '
5 Anode '
6 Cathode '
7 Heater
8 Heater



CV1985 donated by Bryan Lonsdale

This file was last modified 14:45:31, 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.