Translation of the Russian Specification Sheet for the 6C33-C-V* (*6C33-C-B)

Technical Data	Nominal	Min	Max	Notes & Comments
Filament Voltage/Current	6.3V @ 6.6A	5.7V @ 6.0A	6.9V @ 7.2A	Parallel Operation
Filament Voltage/Current	12.6V @ 3.3A	11.4V @ 3.0A	13.8V @ 3.6A	Series Operation
Absolute Maximum Plate Voltage	N/A	N/A	600V	From Cold Tube Warm Up
Plate Voltage - Case #1	N/A	N/A	450V	Plate Dissipation not to exceed 30W
Plate Voltage - Case #2	N/A	N/A	250V	For Plate Dissipation > 30W
Plate Current	N/A	N/A	470mA/630mA**	See special note below
Transconductance mA/V	N/A	30	50	Delta Ip/Delta Vg
Grid Voltage	N/A	-0.5V	-150V	Not specified for positive values
Filament Insulation Rating	N/A	-300V	+300V	Rugged...
Grid Circuit Resistance	N/A	N/A	200K	Do not exceed
Minimum Warm Up time	N/A	2 minutes	N/A	No less than this time
Plate Dissipation 1 Cathode Only	N/A	N/A	45W	One filament heating
Plate Dissipation Both Cathodes	N/A	N/A	60W	Two filament heating
Service Life	2000 hrs
Shelf Life	12 yrs
Height	130mm
Diameter	65mm

Interelectrode Capacitances Miller Grid-Cathode Plate-Cathode Filament-Cathode Filaments

Units in Picofarads 24 or 38 23 or 37 9.5 or 11.5 60 One or both

Special Notes:
* Russian B is actually equivalent to our Roman V..
**If Vp=120Vdc, with a cathode resistor of 35 ohms, it is allowable to use one heated cathode. Use of 2 or more maximum parameters is not permissable.

This was translated from the Russian Specification Sheet received when I recently purchased some 6C33..
Translated by Roman Litovsky 5/27/98.

Interelectrode Capacitances	Miller	Grid-Cathode	Plate-Cathode	Filament-Cathode	Filaments
Units in Picofarads	24 or 38	23 or 37	9.5 or 11.5	60	One or both