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

4030A

Double-ended water-cooled pure-tungsten power triode for very-high-power audio and RF service. Approximately 80 kW plate dissipation, very low plate resistance, and 17.5 kV plate capability suit enormous transmitter and modulator installations.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
21 V / 215 A

Description

Standard Valves 4030-A is a double-ended water-cooled power triode with a pure tungsten filament. It is rated for 17.5 kV maximum direct anode voltage and 80 kW maximum anode dissipation, with published Class B and Class C AF/RF operating conditions through 22 MHz.

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
21 V
Nominal heater current
215 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
Plate resistance
2200 Ω
Transconductance
0.0164 S
Amplification factor
36
Max plate voltage
17500 V
Max plate dissipation
80000 W
Max grid dissipation
1500 W
Max cathode current
11 A

Published ratings/characteristics promoted; remaining useful source values represented as parameters.

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

1937 Standard Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Total Emission

    45 A

    Published specification

Other

  • Water Flow

    22 gallons/min

    Published specification

  • Maximum Direct Anode Current

    11 A

    Published specification

  • Maximum Frequency For Full Ratings

    2 MHz

    Published specification

  • Maximum Anode Voltage At 22 MHz

    15000 V

    Frequency=22MHz

  • Direct Anode Voltage

    12500 V

    ClassB; AFAmplifierOrModulator; BalancedTwoValveCircuit

  • Grid Bias

    -150 V

    ClassB; AFAmplifierOrModulator; BalancedTwoValveCircuit

  • Zero-Signal Anode Current Per Valve

    1.3 A

    ClassB; AFAmplifierOrModulator; BalancedTwoValveCircuit

  • Maximum-Signal Anode Current Per Valve

    6.5 A

    ClassB; AFAmplifierOrModulator; BalancedTwoValveCircuit

  • Anode Dissipation

    36.6 kW

    ClassB; AFAmplifierOrModulator; BalancedTwoValveCircuit

  • Anode-to-Anode Load Resistance

    1700 ohm

    ClassB; AFAmplifierOrModulator; BalancedTwoValveCircuit

  • Maximum Output Two Valves

    90 kW

    ClassB; AFAmplifierOrModulator; BalancedTwoValveCircuit

  • Direct Anode Voltage

    17.5 kV

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=2MHz

  • Direct Anode Current

    4.8 A

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=2MHz

  • Grid Bias

    -400 V

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=2MHz

  • Power Output

    25 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=2MHz

  • Anode Dissipation

    59 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=2MHz

  • Direct Anode Voltage

    15 kV

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=12MHz

  • Direct Anode Current

    4.8 A

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=12MHz

  • Grid Bias

    -300 V

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=12MHz

  • Power Output

    22 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=12MHz

  • Anode Dissipation

    50 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=12MHz

  • Direct Anode Voltage

    12 kV

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=19MHz

  • Direct Anode Current

    4.8 A

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=19MHz

  • Grid Bias

    -250 V

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=19MHz

  • Power Output

    17 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=19MHz

  • Anode Dissipation

    40 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=19MHz

  • Direct Anode Voltage

    10 kV

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=22MHz

  • Direct Anode Current

    4.8 A

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=22MHz

  • Grid Bias

    -150 V

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=22MHz

  • Power Output

    12 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=22MHz

  • Anode Dissipation

    36 kW

    ClassB; Telephony; ModulatedCarrierAppliedToGrid; Frequency=22MHz

  • Direct Anode Voltage

    12 kV

    ClassC; Telephony; AnodeModulated; Frequency=2MHz

  • Direct Anode Current

    5 A

    ClassC; Telephony; AnodeModulated; Frequency=2MHz

  • Grid Bias

    -600 V

    ClassC; Telephony; AnodeModulated; Frequency=2MHz

  • Carrier Output

    40 kW

    ClassC; Telephony; AnodeModulated; Frequency=2MHz

  • Anode Dissipation

    20 kW

    ClassC; Telephony; AnodeModulated; Frequency=2MHz

  • Direct Anode Voltage

    11 kV

    ClassC; Telephony; AnodeModulated; Frequency=12MHz

  • Direct Anode Current

    5 A

    ClassC; Telephony; AnodeModulated; Frequency=12MHz

  • Grid Bias

    -500 V

    ClassC; Telephony; AnodeModulated; Frequency=12MHz

  • Carrier Output

    35 kW

    ClassC; Telephony; AnodeModulated; Frequency=12MHz

  • Anode Dissipation

    20 kW

    ClassC; Telephony; AnodeModulated; Frequency=12MHz

  • Direct Anode Voltage

    10 kV

    ClassC; Telephony; AnodeModulated; Frequency=19MHz

  • Direct Anode Current

    5 A

    ClassC; Telephony; AnodeModulated; Frequency=19MHz

  • Grid Bias

    -450 V

    ClassC; Telephony; AnodeModulated; Frequency=19MHz

  • Carrier Output

    30 kW

    ClassC; Telephony; AnodeModulated; Frequency=19MHz

  • Anode Dissipation

    20 kW

    ClassC; Telephony; AnodeModulated; Frequency=19MHz

  • Direct Anode Voltage

    9 kV

    ClassC; Telephony; AnodeModulated; Frequency=22MHz

  • Direct Anode Current

    5 A

    ClassC; Telephony; AnodeModulated; Frequency=22MHz

  • Grid Bias

    -400 V

    ClassC; Telephony; AnodeModulated; Frequency=22MHz

  • Carrier Output

    20 kW

    ClassC; Telephony; AnodeModulated; Frequency=22MHz

  • Anode Dissipation

    25 kW

    ClassC; Telephony; AnodeModulated; Frequency=22MHz

  • Direct Anode Voltage

    17.5 kV

    ClassC; Telegraphy; Unmodulated; Frequency=2MHz

  • Direct Anode Current

    9.6 A

    ClassC; Telegraphy; Unmodulated; Frequency=2MHz

  • Grid Bias Range

    -800 to -600 V

    ClassC; Telegraphy; Unmodulated; Frequency=2MHz

  • Carrier Output

    100 kW

    ClassC; Telegraphy; Unmodulated; Frequency=2MHz

  • Anode Dissipation

    68 kW

    ClassC; Telegraphy; Unmodulated; Frequency=2MHz

  • Direct Anode Voltage

    15 kV

    ClassC; Telegraphy; Unmodulated; Frequency=12MHz

  • Direct Anode Current

    9.6 A

    ClassC; Telegraphy; Unmodulated; Frequency=12MHz

  • Grid Bias Range

    -700 to -500 V

    ClassC; Telegraphy; Unmodulated; Frequency=12MHz

  • Carrier Output

    88 kW

    ClassC; Telegraphy; Unmodulated; Frequency=12MHz

  • Anode Dissipation

    56 kW

    ClassC; Telegraphy; Unmodulated; Frequency=12MHz

  • Direct Anode Voltage

    12 kV

    ClassC; Telegraphy; Unmodulated; Frequency=19MHz

  • Direct Anode Current

    9.6 A

    ClassC; Telegraphy; Unmodulated; Frequency=19MHz

  • Grid Bias Range

    -600 to -450 V

    ClassC; Telegraphy; Unmodulated; Frequency=19MHz

  • Carrier Output

    68 kW

    ClassC; Telegraphy; Unmodulated; Frequency=19MHz

  • Anode Dissipation

    47 kW

    ClassC; Telegraphy; Unmodulated; Frequency=19MHz

  • Direct Anode Voltage

    10 kV

    ClassC; Telegraphy; Unmodulated; Frequency=22MHz

  • Direct Anode Current

    9.6 A

    ClassC; Telegraphy; Unmodulated; Frequency=22MHz

  • Grid Bias Range

    -550 to -400 V

    ClassC; Telegraphy; Unmodulated; Frequency=22MHz

  • Carrier Output

    48 kW

    ClassC; Telegraphy; Unmodulated; Frequency=22MHz

  • Anode Dissipation

    48 kW

    ClassC; Telegraphy; Unmodulated; Frequency=22MHz

Capacitance

  • Grid-Anode Capacitance

    51 pF

    Published specification

  • Anode-Filament Capacitance

    14 pF

    Published specification

  • Grid-Filament Capacitance

    40 pF

    Published specification

Data set 02

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater/filament voltage

    21 V

  • Heater/filament current

    215 A

  • Plate resistance

    2200 ohm

  • Amplification factor

    36

Other

  • Maximum direct anode voltage

    17500 V

  • Maximum anode dissipation

    80000 W

  • Maximum grid dissipation

    1500 W

  • Maximum cathode/anode current

    11 A