Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

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

8077

Mobile-communications power pentode for Class C RF amplification, oscillation, and frequency multiplication to approximately 40 MHz.

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

Description

Industrial power pentode for Class C RF amplification, oscillation, and frequency multiplication to 40 MHz in mobile communications.

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

Alias/co-designation of 7054; 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

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Voltage (AC or DC)a — published value 1

    13.5 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Voltage (AC or DC)a — published value 2

    1.5 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Current at heater volts = 13 5 — published value 1

    13 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Current at heater volts = 13 5 — published value 2

    5 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Current at heater volts = 13 5 — published value 3

    0 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Current at heater volts = 13 5 — published value 4

    275 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid — published value 1

    0

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid — published value 2

    63

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • except plate

    10.2

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • except grid No 1 — published value 1

    1

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • except grid No 1 — published value 2

    3.5

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage

    13.5 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Supply Voltage

    250 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid No.2 Supply Voltage

    150 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Resistance (Approx )

    0.1 Mohm

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Transconductance

    11500

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Current

    19 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid-No.2 Current

    3.5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • plate µa - 20 — published value 1

    20 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • plate µa - 20 — published value 2

    -10 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 2 -Grid No.l

    2

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 3 -Grid No.3, — published value 1

    3

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 3 -Grid No.3, — published value 2

    7

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Internal

    8

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Shield

    9

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 4 -Heater

    4

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 5 -Heater

    5

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage — published value 1

    13.5 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage — published value 2

    13.5 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage — published value 3

    13.5 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Voltage — published value 1

    200 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Voltage — published value 2

    250 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Voltage — published value 3

    300 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Voltage — published value 1

    115 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Voltage — published value 2

    145 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Voltage — published value 3

    175 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.1 Voltage — published value 1

    -7 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.1 Voltage — published value 2

    -9 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.1 Voltage — published value 3

    -12 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Peak RF Grid-No.l Voltage — published value 1

    9 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Peak RF Grid-No.l Voltage — published value 2

    11 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Peak RF Grid-No.l Voltage — published value 3

    16 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Current — published value 1

    14.5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Current — published value 2

    20 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Current — published value 3

    26 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Current — published value 1

    3 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Current — published value 2

    4.1 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Current — published value 3

    5.5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.l Current (Approx.) — published value 1

    0.6 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.l Current (Approx.) — published value 2

    0.85 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.l Current (Approx.) — published value 3

    1 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Power Output (Approx ) — published value 1

    1.5 W

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Power Output (Approx ) — published value 2

    2.7 W

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Power Output (Approx ) — published value 3

    4 W

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.l Voltage — published value 1

    -16 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.l Voltage — published value 2

    -20 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.l Voltage — published value 3

    -25 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Peak RF Grid-No.l Voltage — published value 1

    19 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Peak RF Grid-No.l Voltage — published value 2

    24 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Peak RF Grid-No.l Voltage — published value 3

    31 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Current — published value 1

    11 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Current — published value 2

    15 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Current — published value 3

    20 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Current — published value 1

    2 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Current — published value 2

    3 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.2 Current — published value 3

    4 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.1 Current (Approx.) — published value 1

    0.3 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.1 Current (Approx.) — published value 2

    0.45 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Grid-No.1 Current (Approx.) — published value 3

    0.6 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

Other

  • PLATE VOLTAGE

    330 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • GRID-No.2 (SCREEN-GRID) VOLTAGE

    180 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Negative-bias value

    55 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Positive-bias value

    0 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • GRID-No.2 INPUT

    1 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • PLATE DISSIPATION

    5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • For fixed-bias operation — published value 1

    0 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • For fixed-bias operation — published value 2

    1 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • For cathode-bias operation

    0.25 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC PLATE VOLTAGE

    300 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC GRID-No.2 (SCREEN-GRID) VOLTAGE

    175 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Negative-bias value

    50 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC PLATE CURRENT

    33 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC GRID-No.2 CURRENT — published value 1

    5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC GRID-No.2 CURRENT — published value 2

    5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC GRID-No.l CURRENT

    3 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid-No.l-Circuit Resistance — published value 1

    0 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid-No.l-Circuit Resistance — published value 2

    1 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

Data set 03

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