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Voltage - Triode (single) ·Triode

12T5GT

Medium-mu receiving triode with a 12.6 V, 150 mA heater, intended for general small-signal amplification in series-heater electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
6O
Socket code
IO
Base pins
8
Nominal heater
12.6 V / 150 mA

Description

12T5GT is listed in the supplied receiving-tube handbook as a medium-mu triode. The published heater rating is 12.6 V at 0.15 A.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
6O
Socket code
IO
Base pins
8
Nominal heater voltage
12.6 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

6O - 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
7700 Ω
Transconductance
0.0026 S
Amplification factor
20
Max plate voltage
300 V

Published maximum ratings, operating characteristics, and continuation data 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    300 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Control-grid bias

    8 V

    ClassA

  • Plate current

    9 mA

    ClassA

Characteristic

  • Plate resistance

    7700 ohm

    Published handbook characteristic

  • Transconductance

    2600 µS

    Published handbook characteristic

  • Amplification factor

    20

    Published handbook characteristic

  • Heater voltage

    12.6 V

    Published heater rating

  • Heater current

    150 mA

    Published heater rating