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Power - Beam Single (NOT sweep) (under 10W) ·BeamPower

6BK5

Beam-power amplifier designed primarily for audio power-output service, providing a compact output stage for radio and consumer electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9BQ
Socket code
B7G
Base pins
9
Nominal heater
6.3 V / 1.2 A

Description

Beam-power amplifier intended primarily for audio power-output service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9BQ
Socket code
B7G
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
1.2 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9BQ - 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
100000 Ω
Transconductance
0.0085 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
9 W
Max screen dissipation
2.5 W

Promoted from the printed maximum-rating/characteristic columns; additional operating-point data retained as section 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

  • Input capacitance

    13 pF

    Section1

  • Output capacitance

    5 pF

    Section1

  • Grid-to-plate capacitance

    0.6 pF

    Section1

Other

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Plate current

    35 mA

    ClassA

  • Load resistance

    6500 Ω

    ClassA

  • Power output

    3.5 W

    ClassA

Characteristic

  • Plate resistance

    100000 Ω

    ClassA

  • Transconductance

    8500 µS

    ClassA

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate Voltage

    250 V

    ClassA

  • Screen Voltage

    250 V

    ClassA

  • Power Output

    3.5 W

    ClassA

  • Load Resistance

    6500 ohm

    ClassA

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater voltage

    6.3 V

  • Heater current

    450 mA

  • Plate resistance

    100000 ohm

  • Transconductance

    8500 uS

Other

  • Maximum plate voltage

    250 V

  • Maximum screen voltage

    250 V

  • Maximum plate dissipation

    9 W

  • Maximum screen dissipation

    2.5 W

  • Typical plate voltage

    250 V

  • Typical screen voltage

    250 V

  • Typical grid voltage

    -5 V

  • Zero-signal plate current

    35 mA

  • Load resistance

    6500 ohm

  • Power output

    3.5 W

  • Total harmonic distortion

    7 %

Capacitance

  • Grid-to-plate capacitance

    0.6 pF

  • Input capacitance

    13 pF

  • Output capacitance

    5 pF

Data set 04

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

  • GRID #

    0.06 µµf

    Capacitances | GRID #1 TO PLATES G1 TO P 0.06 µµf

Other

  • HEATER VOLTAGE G

    3 V

    Maximum Ratings | HEATER VOLTAGE G.3 VOLTS

  • MAXIMUM PLATE VOLTAGE

    250 V

    Maximum Ratings | MAXIMUM PLATE VOLTAGE 250 VOLTS

  • MAXIMUM PLATE DISSIPATION

    9 W

    Maximum Ratings | MAXIMUM PLATE DISSIPATION 9 WATTS

  • MAXIMUM GRID #

    2.5 W

    Maximum Ratings | MAXIMUM GRID #2 DISSIPATION 2.5 WATTS

  • HEATER VOLTAGE C)

    3 V

    Typical Operating Conditions | HEATER VOLTAGE C).3 VOLTS

  • Published electrical value

    -5 V

    Typical Operating Conditions | 6R ID #1 VOLTAGE -5 VOLTS

  • ZERO- SIGNAL PLATE CURRENT

    35 mA

    Typical Operating Conditions | ZERO- SIGNAL PLATE CURRENT 35 MA.

Data set 05

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate Voltage

    250 V

    ClassA

  • Screen Voltage

    250 V

    ClassA

  • Grid1 Voltage

    -5 V

    ClassA

  • Peak AF Grid1 Voltage

    5 V

    ClassA

  • Zero Signal Plate Current

    35 mA

    ClassA

  • Maximum Signal Plate Current

    37 mA

    ClassA

  • Zero Signal Screen Current

    3.5 mA

    ClassA

  • Maximum Signal Screen Current

    10 mA

    ClassA

  • Load Resistance

    6500 ohm

    ClassA

  • Total Harmonic Distortion

    7 %

    ClassA

  • Maximum Signal Power Output

    3.5 W

    ClassA

Capacitance

  • Grid1 To Plate Capacitance

    0.6 pF

  • Input Capacitance

    13 pF

  • Output Capacitance

    5 pF