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Tube Tinker — Electron Tube Database
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Voltage - Triode (single) ·Triode

AA

Early receiving triode for voltage amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
5
Nominal heater
3.8 V / 500 mA

Description

Receiving triode for voltage amplification.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
5
Nominal heater voltage
3.8 V
Nominal heater current
500 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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
30000 Ω
Transconductance
0.001 S
Amplification factor
30
Max plate voltage
250 V
Max plate dissipation
1.5 W

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater or filament voltage

    3.8 V

    Published nominal value

  • Heater or filament current

    500 mA

    Published nominal value

  • Transconductance

    1000 µS

    Published operating characteristic