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Voltage Pentode ·Pentode

6BW7

High-transconductance VHF pentode developed specifically for television IF and video-amplifier stages requiring wideband gain.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9AQ
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

VHF pentode for television IF and video amplifier stages.

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

9AQ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1KAK — Cathode

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN2G1AG1 — Control Grid

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN3KAK — Cathode

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN4H—H — Heater

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN5H—H — Heater

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN6ISAIS — Internal Screen

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN7PAP — Plate (Anode)

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN8G2AG2 — Screen Grid

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

PIN9G3AG3 — Suppressor Grid

EIA chart transcription, manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9AQ

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
750000 Ω
Transconductance
0.0082 S
Amplification factor
70
Max plate voltage
275 V
Max screen voltage
275 V
Max plate dissipation
2.75 W
Max screen dissipation
1.2 W

Published maximum ratings, operating characteristics, rectifier data, and capacitances reviewed.

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

Pentode

Other

  • Maximum plate voltage

    275 V

    Published handbook rating

  • Maximum screen voltage

    275 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Plate current

    10 mA

    ClassA

  • Screen current

    3.7 mA

    ClassA

Characteristic

  • Plate resistance

    750000 ohm

    Published handbook characteristic

  • Transconductance

    8200 µS

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

Capacitance

  • Input capacitance

    10 pF

    Published capacitance column

  • Output capacitance

    3.5 pF

    Published capacitance column

  • Grid-to-plate capacitance

    0.01 pF

    Published capacitance column

Data set 02

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

  • Application

    IF_VideoAmplifier text