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Power - Pentode (NOT beam) ·Diode-Diode-Pentode

6BV7

Duo-diode power-pentode combination integrating detector functions with loudspeaker output for economical radio receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
9BU
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 800 mA

Description

Miniature duo-diode power-amplifier pentode. Designed primarily for low-cost four-valve receivers and capable of power-output service at reduced plate and screen voltages.

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
9BU
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
800 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9BU - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

3 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
100000 Ω
Transconductance
0.01 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
5 W

Promoted values from 6BV7_AWV.pdf; section type follows printed electrode/function description.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted values from 6BV7_AWV.pdf; section type follows printed electrode/function description.

Section 3

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted values from 6BV7_AWV.pdf; section type follows printed electrode/function description.

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

1946 Amalgamated Wireless

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Grid-to-plate capacitance

    0.5 pF

    Direct interelectrode capacitance

  • Input capacitance

    11.5 pF

    Direct interelectrode capacitance

  • Output capacitance

    9.5 pF

    Direct interelectrode capacitance

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate voltage

    250 V

    Published handbook rating

  • Maximum screen voltage

    250 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Control-grid bias

    5 V

    ClassA

  • Plate current

    38 mA

    ClassA

  • Screen current

    6 mA

    ClassA

  • Load resistance

    8000 ohm

    ClassA

  • Power output

    4 W

    ClassA

Characteristic

  • Plate resistance

    100000 ohm

    Published handbook characteristic

  • Transconductance

    10000 µS

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    800 mA

    Published heater rating

Capacitance

  • Input capacitance

    11.5 pF

    Published capacitance column

  • Output capacitance

    9.5 pF

    Published capacitance column

  • Grid-to-plate capacitance

    0.5 pF

    Published capacitance column