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Voltage - Triode (single) ·Triode

6AQ4

General-purpose triode for receiving, amplification, driver, or electronic service as documented by the manufacturer.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7DT
Socket code
-
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

6AQ4 is listed in the supplied receiving-tube handbook as a high-mu triode. The published heater rating is 6.3 V at 0.3 A. Maximum ratings and representative operating characteristics were transcribed from the supplied table.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7DT
Socket code
-
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7DT - 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
12000 Ω
Transconductance
0.0085 S
Amplification factor
100
Max plate voltage
250 V

Published maximum ratings, representative operating characteristics, and capacitance columns 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

Triode

Other

  • Maximum plate voltage

    250 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Control-grid bias

    1.5 V

    ClassA

  • Plate current

    10 mA

    ClassA

Characteristic

  • Plate resistance

    12000 ohm

    Published handbook characteristic

  • Transconductance

    8500 µS

    Published handbook characteristic

  • Amplification factor

    100

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

Capacitance

  • Input capacitance

    8.5 pF

    Published capacitance column

  • Output capacitance

    0.2 pF

    Published capacitance column

  • Grid-to-plate capacitance

    2.5 pF

    Published capacitance column