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Diode (NOT rectifier) ·Diode-Diode-Diode

6GQ7

Triple high-perveance diode containing three sections for AM detection and FM detector or discriminator circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
9QM
Socket code
-
Base pins
9
Nominal heater
6.3 V / 450 mA

Description

The 6GQ7 contains three high-perveance diode sections in a 9-pin miniature envelope for AM detection and FM detector or discriminator circuits.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9QM
Socket code
-
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9QM - 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

Diode

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
330 V
Rectifier nominal output current
9 mA
Rectifier peak forward current
54 mA
Rectifier forward voltage drop
10 V

Representative identical diode section; tube contains three diodes.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Physical diode section added to match documented multi-diode construction.

Section 3

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Physical diode section added to match documented multi-diode construction.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Heater voltage

    6.3 V

  • Heater current

    450 mA

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Diode

Capacitance

  • Plate input capacitance

    2.05 pF

  • Cathode input capacitance

    3.1 pF

  • Plate-to-plate capacitance

    0.47 pF

Other

  • AC plate voltage RMS

    117 V

    EachDiode

  • Minimum effective plate supply impedance

    300 ohm

    EachDiode

Characteristics

  • Resonant frequency

    700 MHz

    Approximate;EachDiode