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Voltage Triode Pentode ·Pentode-Triode

6AD7G

Triode plus power-amplifier pentode intended for Class-A amplification and output service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
8AY
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 850 mA

Description

Triode plus power-amplifier pentode intended for Class A amplification.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
8AY
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
850 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

8AY - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
19000 Ω
Transconductance
0.000325 S
Amplification factor
6
Max plate voltage
285 V

Triode section.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
80000 Ω
Transconductance
0.0025 S
Max plate voltage
375 V
Max screen voltage
285 V

Power-amplifier pentode 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

Triode

Other

  • Plate voltage

    250 V

    ClassA

  • Grid voltage

    -25 V

    ClassA

  • Plate current

    3.7 mA

    ClassA

SECTION 2

Pentode

Other

  • Plate voltage

    250 V

    ClassA

  • Screen-grid voltage

    250 V

    ClassA

  • Grid voltage

    -16.5 V

    ClassA

  • Plate current

    34 mA

    ClassA

  • Screen-grid current

    6.5 mA

    ClassA

  • Load resistance

    7000 ohm

    ClassA

  • Power output

    3.2 W

    ClassA