Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

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

1H6G

Directly heated double-diode triode for detector, AVC, and audio voltage-amplifier service in battery radios. Paired diodes provide signal and control rectification while the triode supplies subsequent audio gain.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
7AA
Socket code
IO
Base pins
8
Nominal heater
2 V / 60 mA

Description

1H6G is listed as a duplex-diode medium-mu triode in the supplied receiving-tube handbook. It uses a 2.0 V, 0.06 A directly heated filament. The handbook publishes maximum ratings and representative operating characteristics for its intended service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7AA
Socket code
IO
Base pins
8
Nominal heater voltage
2 V
Nominal heater current
60 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7AA - 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

No fixed ratings are recorded for this section.

Detector/AVC diode section 1; source publishes no separate fixed electrical ratings for the diode.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Detector/AVC diode section 2; source publishes no separate fixed electrical ratings for the diode.

Section 3

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
35000 Ω
Transconductance
0.000575 S
Amplification factor
20
Max plate voltage
135 V

Triode section Class A1 characteristics.

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

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 3

Triode

Other

  • Naximur Plate Voltage

    135

    Published ratings

  • Plate Voltage

    135 V

    ClassA

  • Grid Bias

    -3 V

    ClassA

  • Amplification Factor

    20

    ClassA

  • Plate Resistance

    35000 ohm

    ClassA

  • Transconductance

    575 uS

    ClassA

  • Plate Current

    0.8 mA

    ClassA

Capacitance

  • Grid to Plate

    3.6 pF

    Published capacitance

  • Input

    2 pF

    Published capacitance

  • Output

    3 pF

    Published capacitance

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 3

Triode

Other

  • Maximum plate voltage

    135 V

    Published handbook rating

  • Plate voltage

    135 V

    ClassA

  • Control-grid voltage

    3 V

    ClassA

  • Plate current

    0.8 mA

    ClassA

Characteristic

  • Plate resistance

    35000 ohm

    Published handbook characteristic

  • Transconductance

    575 µS

    Published handbook characteristic

  • Amplification factor

    20

    Published handbook characteristic

  • Filament voltage

    2 V

    DirectlyHeated DC filament

  • Filament current

    60 mA

    DirectlyHeated DC filament