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Power - Tetrode (NOT beam) ·Tetrode

6AL6G

Heater-type tetrode power amplifier designed for Class-A and general power-amplifier service. Its output capability supports low-frequency or general-purpose load-driving applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
6AM
Socket code
UX6
Base pins
6
Nominal heater
6.3 V / 900 mA

Description

Heater-type tetrode power amplifier intended for Class A and power-amplifier service.

Socket description

Small 6-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
6AM
Socket code
UX6
Base pins
6
Nominal heater voltage
6.3 V
Nominal heater current
900 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

6AM - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Pin 1—NC

May be omitted on some physical base variants

Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN2Pin 2—H — HeaterVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN3Pin 3—NCVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN4Pin 4AG2 — Screen GridVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN5Pin 5AG1 — Control GridVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN7Pin 7—H — HeaterVerified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN8Pin 8ABP — Beam-Forming PlateGroup AM8Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

PIN8Pin 8AK — CathodeGroup AM8Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

CAP1Top capAP — Plate (Anode)Verified

6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

Section ratings

1 physical section, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
22500 Ω
Transconductance
0.006 S
Max plate voltage
350 V
Max screen voltage
300 V
Max plate dissipation
18.6 W
Max screen dissipation
3.7 W

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Maximum D~C Soresn Voltage

    300 V

    Maximum D~C Soresn Voltage 300 volts

  • Mazimum Grid Resistor (Self-Bias)

    0.5 MΩ

    Mazimum Grid Resistor (Self-Bias) 0.5 megohm

  • Meaximum Sevesn Dissipation

    8.7 W

    Meaximum Sevesn Dissipation 8.7 watts

  • Hoatex Voltage 6.3

    6.3 V

    Hoatex Voltage 6.3 6.3 volts

  • Maximm-Signal Plete Currant 79

    78 mA

    Maximm-Signal Plete Currant 79 78 ma

  • Maximum Signal Sorssn Currens oD

    7.2 mA

    Maximum Signal Sorssn Currens oD 7.2 ma

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Maximum plate voltage

    350 V

    Published handbook rating

  • Maximum screen voltage

    300 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Control-grid bias

    11 V

    ClassA

  • Plate current

    72 mA

    ClassA

  • Screen current

    5 mA

    ClassA

  • Load resistance

    2500 ohm

    ClassA

  • Power output

    6.5 W

    ClassA

Characteristic

  • Plate resistance

    22500 ohm

    Published handbook characteristic

  • Transconductance

    6000 µS

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    900 mA

    Published heater rating