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6AG6G

High-sensitivity audio power pentode capable of approximately 3.75 W single-ended output at 250 V.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7S
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 1.2 A

Description

The BRIMAR 6AG6G is an indirectly heated high-sensitivity output pentode intended for the output stage of radio receivers.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7S
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 1.2 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7S - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IS	A	IS — Internal Screen EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S
PIN2H	—	H — Heater EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S
PIN3P	A	P — Plate (Anode) EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S
PIN4G2	A	G2 — Screen Grid EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S
PIN5G1	A	G1 — Control Grid EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S
PIN7H	—	H — Heater EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S
PIN8G3	A	G3 — Suppressor GridGroup 7S8 EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S
PIN8K	A	K — CathodeGroup 7S8 EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7S

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 60000 Ω
Transconductance: 0.01 S
Amplification factor: 600
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 10 W
Max screen dissipation: 2.5 W

Published source values promoted where applicable.

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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Anode Current
32 mA
AnodeVoltage=250V
Screen Current
6 mA
ScreenVoltage=250V
Control Grid Voltage
-6 V
Cathode Bias Resistor
150 ohm
Optimum Load
9000 ohm
Power Output
3.75 W

Data set 02

1954 STC Brimar

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Power output
3.75 W
OneTube

Data set 03

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate Voltage
250 V
Plate Current
32 mA
Screen Voltage
250 V

Characteristic

Transconductance
9500 µS
Plate Resistance
60000 ohm