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Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode

6AQ6

Receiving tube combining radio signal detection or control-voltage rectification with associated voltage amplification. Its detector function is integral to receiver signal processing and supports classification within the radio detector/converter family.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 3
Base: 7BT
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 150 mA

Description

6AQ6 is described in the supplied Tung-Sol datasheet as a double-diode high-mu triode detector/AVC/audio tube. Published maximum ratings and core section characteristics were extracted into the technical tables.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7BT
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 150 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7BT - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN11G1	A	G1 — Control Grid EIA source label 1G1; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BT
PIN2K	A	K — Cathode EIA source label K; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BT
PIN3H	—	H — Heater EIA source label H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BT
PIN4H	—	H — Heater EIA source label H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BT
PIN52P	B	P — Plate (Anode) EIA source label 2P; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BT
PIN63P	C	P — Plate (Anode) EIA source label 3P; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BT
PIN71P	A	P — Plate (Anode) EIA source label 1P; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BT

Section ratings

3 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Representative row for two diode sections sharing a common cathode.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Second physical diode section added in approved section-structure reconciliation.

Section 3

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 58000 Ω
Transconductance: 0.0012 S
Amplification factor: 70
Max plate voltage: 300 V

High-mu triode section.

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

Diode

Other

Plate voltage
250 V
ClassA
Control-grid voltage
-3 V
ClassA
Plate current
1 mA
ClassA

Characteristic

Plate resistance
58000 Ω
ClassA
Transconductance
1200 µS
ClassA
Amplification factor
70
ClassA

SECTION 3

Triode

Other

Plate voltage
250 V
ClassA
Control-grid voltage
-3 V
ClassA
Plate current
1 mA
ClassA

Characteristic

Plate resistance
58000 Ω
ClassA
Transconductance
1200 µS
ClassA
Amplification factor
70
ClassA

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 3

Triode

Other

Plate Voltage
250 V
ClassA

Characteristic

Plate Current
1 mA
ClassA