6C33C-B Power Triode

The 6C33C-B is a power triode designed for use as a series voltage regulator. 
The 6C33C-B has very high perveance and very high transconductance. It has high 
current capabilities, making it suitable for Output Transformerless audio power 
amplifiers.

General Data

Heater Characteristics
             Heater voltage....................6.3 or 12.6 ac or dc 
             Heater current....................6.4 or  3.3 amps 

Direct Interelectrode Capacitances 
             Input...................................30.0 pf
             Output..................................10.5 pf
             Transfer................................31.0 pf 

Mechanical Data
             Mounting position.......................Vertical 
             Overall length..........................5.25" (max) 
             Seated height...........................4.75" (max) 
             Diameter................................2.5" (avg) 
             Base....................................Septar 

Pin Arrangment

                                  Pin 1...Heater 
                                  Pin 2...Heater 
                                  Pin 3...Cathode 
                                  Pin 4...Anode 
                                  Pin 5...Grid 1 
                                  Pin 6...Heater 
                                  Pin 7...Heater 

Absolute Maximum Ratings
             Anode voltage...........................400 
             Anode dissipation.......................60 watts 
             Cathode current.........................600 milliamps 
             Heater to cathode.......................+-300 volts 
             Maximum grid 1 resistance...............200,000 ohms 

Typical Characteristics
             Anode voltage...........................120
             Cathode resistor........................35 ohms 
             Anode current...........................550 milliamps 
             Transconductance(Gm)....................40000 micromhos 
             Anode resistance........................80 ohms 

Typical Operation
Audio Frequency Power Amplifier
Push-Pull Class A Fixed Bias
Values are for Two Tubes

             Anode voltage...........................200 
             Grid 1 voltage..........................-65 
             Zero signal anode current...............480 milliamps 
             Maximum signal anode current............480 milliamps  
             Peak grid 1 voltage.....................65 
             Zero signal anode dissipation...........96 watts 
             Maximum signal anode dissipation........40 watts 
             Effective load..........................800 ohms 
             Power output............................55 watts