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Power - TV Horizontal Output (sweep) ·BeamPower

25BQ6GTB

Beam-power tube designed for horizontal-deflection amplifier service in color and black-and-white television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
9
Nominal heater
25 V / 300 mA

Description

Beam power tube for horizontal-deflection amplifier service in color and black-and-white television receivers.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
9
Nominal heater voltage
25 V
Nominal heater current
300 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

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
14500 Ω
Transconductance
0.0059 S
Max plate voltage
600 V
Max screen voltage
200 V
Max plate dissipation
11 W
Max screen dissipation
2.5 W
Max cathode current
110 mA

Supplied 25BQ6GTB sheet identifies this as a heater-voltage variant of 6BQ6GTB. Promoted beam-power electrical fields were populated from the exact parent-type technical data; heater values remain specific to the supplied 25BQ6GTB sheet.

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

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater voltage

    25 V

    Nominal heater rating from supplied sheet

  • Heater current

    300 mA

    Nominal heater rating from supplied sheet

  • Plate resistance

    14500 ohm

    InheritedFromExplicitParent 6BQ6GTB

  • Transconductance

    0.0059 A/V

    InheritedFromExplicitParent 6BQ6GTB

  • Plate resistance

    14500 ohm

    ExactParentElectricalData 6BQ6GTB

  • Transconductance

    5900 uS

    ExactParentElectricalData 6BQ6GTB

Other

  • Maximum plate voltage

    600 V

    InheritedFromExplicitParent 6BQ6GTB

  • Maximum screen voltage

    200 V

    InheritedFromExplicitParent 6BQ6GTB

  • Maximum plate dissipation

    11 W

    InheritedFromExplicitParent 6BQ6GTB

  • Maximum plate voltage

    600 V

    ExactParentElectricalData 6BQ6GTB

  • Maximum screen-grid voltage

    200 V

    ExactParentElectricalData 6BQ6GTB

  • Maximum plate dissipation

    11 W

    ExactParentElectricalData 6BQ6GTB

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater-Cathode Voltage:

    11 s

    Other

  • Peak value

    200 V

    Other;PublishedValue1

  • Peak value

    200 V

    Other;PublishedValue2

  • Peak value

    200 V

    Other;PublishedValue3

  • Average value

    100 V

    Other;PublishedValue1

  • Average value

    100 V

    Other;PublishedValue2

  • Average value

    100 V

    Other;PublishedValue3

  • DC Plate Voltage

    600 V

    MaximumRating

  • Peak Positive-Pulse Plate Voltage* (Absolute Maximum)

    6000 V

    MaximumRating

  • Peak Negative-Pulse Plate Voltage

    1260 V

    MaximumRating

  • DC Grid-No

    2 V

    MaximumRating;PublishedValue1

  • DC Grid-No

    200 V

    MaximumRating;PublishedValue2

  • Peak Negative-Pulse Grid-No.l (Control-Grid) Voltage

    300 V

    MaximumRating

  • Peak Cathode Current

    400 mA

    MaximumRating

  • Average Cathode Current

    110 mA

    MaximumRating

  • Plate Dissipation"

    11 W

    MaximumRating

  • Grid-No

    2 W

    MaximumRating;PublishedValue1

  • Grid-No

    2.5 W

    MaximumRating;PublishedValue2

  • Grid-No.l-Circuit Resistance

    0.47 megohm

    MaximumCircuitValue

  • Maximum Plate Voltage

    600 V

    Section1;Promoted

  • Maximum Screen Voltage

    200 V

    Section1;Promoted

  • Maximum Plate Dissipation

    11 W

    Section1;Promoted

  • Maximum Screen Dissipation

    2.5 W

    Section1;Promoted

  • Maximum Cathode Current

    110 mA

    Section1;Promoted

Capacitance

  • Plate to Cathode, Heater, Grid No

    2 pF

    Capacitance;PublishedValue1

  • Plate to Cathode, Heater, Grid No

    3 pF

    Capacitance;PublishedValue2

  • Plate to Cathode, Heater, Grid No

    7 pF

    Capacitance;PublishedValue3

Characteristic

  • Plate Voltage

    60 V

    Characteristic;PublishedValue1

  • Plate Voltage

    150 V

    Characteristic;PublishedValue2

  • Plate Voltage

    250 V

    Characteristic;PublishedValue3

  • Grid-No

    2 V

    Characteristic;PublishedValue1

  • Grid-No

    150 V

    Characteristic;PublishedValue2

  • Grid-No

    150 V

    Characteristic;PublishedValue3

  • Grid-No

    150 V

    Characteristic;PublishedValue4

  • Grid-No

    1 V

    Characteristic;PublishedValue1

  • Grid-No

    0 V

    Characteristic;PublishedValue2

  • Grid-No

    22.5 V

    Characteristic;PublishedValue3

  • Grid-No

    -22.5 V

    Characteristic;PublishedValue4

  • Plate Resistance (Approx.) —

    14500 ohm

    Characteristic

  • Plate Current

    260 mA

    Characteristic;PublishedValue1

  • Plate Current

    57 mA

    Characteristic;PublishedValue2

  • Grid-No

    2 mA

    Characteristic;PublishedValue1

  • Grid-No

    26 mA

    Characteristic;PublishedValue2

  • Grid-No

    2.1 mA

    Characteristic;PublishedValue3

  • Grid-No

    1 mA

    Characteristic;PublishedValue1

  • Grid-No

    1 mA

    Characteristic;PublishedValue2

  • Published value

    -43 V

    Characteristic

  • Plate Resistance

    14500 ohm

    Section1;Promoted

  • Transconductance

    5900 uS

    Section1;Promoted