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Power - Pentode (NOT beam) ·Pentode

EL12SPEC

Power/output pentode designed for audio-frequency power amplification in single-ended or push-pull output stages.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
Y8A
Base pins
8
Nominal heater
6.3 V / 1.2 A

Description

Special-quality power pentode for audio-frequency output and power-amplifier service.

Socket description

Steel-tube 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
Y8A
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
1.2 A
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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.011 S
Max plate voltage
425 V
Max screen voltage
425 V
Max plate dissipation
25 W

Published maximum ratings/characteristics promoted from source.

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 Tesla

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    1.2 A

    Nominal

  • Maximum Plate Voltage

    425 V

  • Maximum Screen Voltage

    425 V

  • Maximum Plate Dissipation

    25 W

Characteristic

  • Transconductance

    11000 µS

    Typical