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Power - Triode (over 1000V 100W) ·Triode

3C800E

Heavy-filament directly heated triode for high-power transmitting and RF service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 32.5 A

Description

The 3C800E is a radiation-cooled radio-frequency triode for RF heating applications, with a directly heated thoriated-tungsten filament and forced-air cooling recommended in service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
32.5 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.05 S
Amplification factor
22
Max plate voltage
6000 V
Max plate dissipation
800 W
Max grid dissipation
120 W
Max cathode current
750 mA

Published maximum ratings and characteristics audited; remaining values retained densely in parameter table.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Filament voltage [1]

    6 V

    Filament voltage 6-3 v

  • Filament voltage [2]

    -3 V

    Filament voltage 6-3 v

  • Filament current (Note [1]

    1 A

    Filament current (Note 1) 325 A

  • Filament current (Note [2]

    325 A

    Filament current (Note 1) 325 A

  • Note

    1 A

    Note 1 —The filament is suitable for direct switcting without additional current limita-

  • tions and will withstand voltage fluctuations of +

    5 V

    tions and will withstand voltage fluctuations of +5%,.

  • Mutual conductance At V, = [1]

    40 mA/V

    Mutual conductance At V, = 40k 50 mA/vY

  • Mutual conductance At V, = [2]

    50 mA/V

    Mutual conductance At V, = 40k 50 mA/vY

  • Anode to grid

    65

    Anode to grid 65 pF

  • Grid to filament

    20

    Grid to filament 20 pF

  • Anode to filament [1]

    0

    Anode to filament 0-25 pF

  • Anode to filament [2]

    -25

    Anode to filament 0-25 pF

  • Maximum temperature of bulb ‘

    350

    Maximum temperature of bulb ‘ 350 °C

  • Maximum direct anode ;Skage

    60 kV

    Maximum direct anode ;Skage 60 kv

  • Maximum direct anode current

    750 mA

    Maximum direct anode current 750 mA

  • Maximum direct anode dissipation

    800 W

    Maximum direct anode dissipation 800 w

  • Maximum direct grid voltage [1]

    -1 V

    Maximum direct grid voltage —1-25 kY

  • Maximum direct grid voltage [2]

    -25 V

    Maximum direct grid voltage —1-25 kY

  • Maximum direct grid current

    300 mA

    Maximum direct grid current 300 mA

  • Maximum direct grid dissipation

    120 W

    Maximum direct grid dissipation 120 w

  • Maximum grid to filament resistor

    10

    Maximum grid to filament resistor 10 kQ

  • Maximum frequency for above ratings

    50 MHz

    Maximum frequency for above ratings 50 MHz

  • Direct anode voltage [1]

    30 kV

    Direct anode voltage 30 50 kV

  • Direct anode voltage [2]

    50 kV

    Direct anode voltage 30 50 kV

  • Direct anode current (Note [1]

    3 mA

    Direct anode current (Note 3) 700 (220) 700 (220) mA

  • Direct anode current (Note [2]

    700 mA

    Direct anode current (Note 3) 700 (220) 700 (220) mA

  • Direct anode current (Note [3]

    220 mA

    Direct anode current (Note 3) 700 (220) 700 (220) mA

  • Direct anode current (Note [4]

    700 mA

    Direct anode current (Note 3) 700 (220) 700 (220) mA

  • Direct anode current (Note [5]

    220 mA

    Direct anode current (Note 3) 700 (220) 700 (220) mA

  • Direct grid current (Note [1]

    3 mA

    Direct grid current (Note 3) 240 (400) 225 (370) mA

  • Direct grid current (Note [2]

    240 mA

    Direct grid current (Note 3) 240 (400) 225 (370) mA

  • Direct grid current (Note [3]

    400 mA

    Direct grid current (Note 3) 240 (400) 225 (370) mA

  • Direct grid current (Note [4]

    225 mA

    Direct grid current (Note 3) 240 (400) 225 (370) mA

  • Direct grid current (Note [5]

    370 mA

    Direct grid current (Note 3) 240 (400) 225 (370) mA

  • Grid to filament resistor [1]

    1

    Grid to filament resistor 1-5 25 k Q2

  • Grid to filament resistor [2]

    -5

    Grid to filament resistor 1-5 25 k Q2

  • Grid to filament resistor [3]

    25

    Grid to filament resistor 1-5 25 k Q2

  • Anode efficiency [1]

    74

    Anode efficiency 74 77-5 %

  • Anode efficiency [2]

    77

    Anode efficiency 74 77-5 %

  • Anode efficiency [3]

    -5

    Anode efficiency 74 77-5 %

  • Power output [1]

    1 kW

    Power output 1-55 27 kW

  • Power output [2]

    -55 kW

    Power output 1-55 27 kW

  • Power output [3]

    27 kW

    Power output 1-55 27 kW

  • Maximum ditect anode voltag [1]

    5 kV

    Maximum ditect anode voltag: 5-4 kv

  • Maximum ditect anode voltag [2]

    -4 kV

    Maximum ditect anode voltag: 5-4 kv

  • Maximum direct anode current

    670 mA

    Maximum direct anode current 670 " mA

  • Maximum direct grid voltage [1]

    -1 kV

    Maximum direct grid voltage —1:25 kv

  • Maximum direct grid voltage [2]

    25 kV

    Maximum direct grid voltage —1:25 kv

  • Maximum direct grid current (Note [1]

    3 mA

    Maximum direct grid current (Note 3) 270 mA

  • Maximum direct grid current (Note [2]

    270 mA

    Maximum direct grid current (Note 3) 270 mA

  • Maximnim direct grid dissipation

    120 W

    Maximnim direct grid dissipation 120 w

  • Direct anode voltage [1]

    315 kV

    Direct anode voltage 315 4-5 kv

  • Direct anode voltage [2]

    4 kV

    Direct anode voltage 315 4-5 kv

  • Direct anode voltage [3]

    -5 kV

    Direct anode voltage 315 4-5 kv

  • Direct anode current (Note [1]

    3 mA

    Direct anode current (Note 3) 600 (190) 600 (190) mA

  • Direct anode current (Note [2]

    600 mA

    Direct anode current (Note 3) 600 (190) 600 (190) mA

  • Direct anode current (Note [3]

    190 mA

    Direct anode current (Note 3) 600 (190) 600 (190) mA

  • Direct anode current (Note [4]

    600 mA

    Direct anode current (Note 3) 600 (190) 600 (190) mA

  • Direct anode current (Note [5]

    190 mA

    Direct anode current (Note 3) 600 (190) 600 (190) mA

  • Direct anode dissipation [1]

    620 W

    Direct anode dissipation 620 750 w

  • Direct anode dissipation [2]

    750 W

    Direct anode dissipation 620 750 w

  • Direct grid current (Note [1]

    3 mA

    Direct grid current (Note 3) 180 (300) 150 (250) mA

  • Direct grid current (Note [2]

    180 mA

    Direct grid current (Note 3) 180 (300) 150 (250) mA

  • Direct grid current (Note [3]

    300 mA

    Direct grid current (Note 3) 180 (300) 150 (250) mA

  • Direct grid current (Note [4]

    150 mA

    Direct grid current (Note 3) 180 (300) 150 (250) mA

  • Direct grid current (Note [5]

    250 mA

    Direct grid current (Note 3) 180 (300) 150 (250) mA

  • Grid to filament resistor [1]

    15

    Grid to filament resistor 15 25 kQ

  • Grid to filament resistor [2]

    25

    Grid to filament resistor 15 25 kQ

  • Anode efficiency [1]

    73

    Anode efficiency . 73 77 %

  • Anode efficiency [2]

    77

    Anode efficiency . 73 77 %

  • Power output [1]

    17 kW

    Power output 17 2-55 kW

  • Power output [2]

    2 kW

    Power output 17 2-55 kW

  • Power output [3]

    -55 kW

    Power output 17 2-55 kW

  • Maximum direct anode voltage

    60 kV

    Maximum direct anode voltage 60 kv

  • Maximum direct anode cissipation

    800

    Maximum direct anode cissipation 800 w

  • _Maximum frequency for above ratings

    50 MHz

    _Maximum frequency for above ratings 50 MHz

  • Direct anode voltage [1]

    5 kV

    Direct anode voltage 5-0 kv

  • Direct anode voltage [2]

    0 kV

    Direct anode voltage 5-0 kv

  • Direct anode current (Note [1]

    3 mA

    Direct anode current (Note 3) 700 (220) mA

  • Direct anode current (Note [2]

    700 mA

    Direct anode current (Note 3) 700 (220) mA

  • Direct anode current (Note [3]

    220 mA

    Direct anode current (Note 3) 700 (220) mA

  • Direct anode dissipation

    780 W

    Direct anode dissipation 780 w

  • Direct grid curreat (Note [1]

    3

    Direct grid curreat (Note 3) 160 (270) mA

  • Direct grid curreat (Note [2]

    160

    Direct grid curreat (Note 3) 160 (270) mA

  • Direct grid curreat (Note [3]

    270

    Direct grid curreat (Note 3) 160 (270) mA

  • Grid to filament resistor [1]

    2

    Grid to filament resistor 2-5 kQ

  • Grid to filament resistor [2]

    -5

    Grid to filament resistor 2-5 kQ

  • Anode efficiency

    78

    Anode efficiency 78 %

  • Power output

    27 kW

    Power output 27 kwW