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Power - Pentode Single (NOT beam) (under 10W) ·Pentode

7054

Power pentode designed for radio-frequency amplification, oscillation, modulation, or frequency-multiplier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
13.5 V / 275 mA

Description

7054 co-designation of industrial power pentode 8077 for RF amplification, oscillation, and frequency multiplication to 40 MHz.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
13.5 V
Nominal heater current
275 mA
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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
50000 Ω
Transconductance
0.0115 S
Max plate voltage
300 V
Max screen voltage
175 V
Max plate dissipation
5 W
Max screen dissipation
1.2 W
Max cathode current
30 mA

Mobile power pentode; RF and AF operating modes retained 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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • RFPowerOutput

    4 W

    UpTo40MHz

Application

  • Application

    RFPower_FrequencyMultiplier_Modulator_AudioPower text

Data set 02

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Pentode

CrossReference

  • Prototype / equivalent family

    12BY7A

Other

  • RF power output at 40 MHz

    4 W

    ClassC

  • Frequency-doubler output at 40 MHz

    2.5 W

    ClassC

Data set 03

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    13.5 V

  • Heater current nominal

    275 mA

  • RF plate voltage

    300 V

    ClassC;40MHz

  • RF screen voltage

    175 V

    ClassC;40MHz

  • RF plate current

    20 mA

    ClassC;40MHz

  • Useful power output

    4 W

    ClassC;40MHz

  • Frequency-multiplier plate voltage

    300 V

    FrequencyMultiplier;Doubler

  • Frequency-multiplier output

    2.5 W

    FrequencyMultiplier;Doubler

Characteristic

  • Transconductance minimum

    8500 uS

    EquipmentDesign

  • Transconductance maximum

    14500 uS

    EquipmentDesign

  • Plate current minimum

    13 mA

    EquipmentDesign

  • Plate current maximum

    25 mA

    EquipmentDesign

Data set 04

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Peak Heater-Cathode Voltage

    120 V

    AbsoluteValue

  • RF DC Plate Voltage

    300 V

    ClassC;CCS;40MHz

  • RF DC Plate Current

    33 mA

    ClassC;CCS;40MHz

  • Useful Power Output

    2.5 W

    FrequencyDoubler;300V

Capacitance

  • Grid No.1 to Plate Capacitance

    0.063 pF

  • Grid No.1 Input Capacitance

    10.2 pF

  • Plate Output Capacitance

    3.5 pF

Characteristic

  • Class A Plate Supply Voltage

    250 V

    ClassA

  • Class A Screen Supply Voltage

    150 V

    ClassA

  • Class A Plate Current

    19 mA

    ClassA

  • Class A Screen Current

    3.5 mA

    ClassA