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Voltage Pentode ·Pentode

E80T

Premium special-purpose pentode documented by Philips and Amperex with professional ratings and characteristics. The available material establishes premium-quality specialized service but does not provide enough explicit functional wording for a narrower TubeType.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
NOVAL
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 150 mA

Description

E80T is listed in the supplied Amperex material as a premium special-purpose tube. Published ratings and characteristics were captured from the supplied table.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
NOVAL
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

NOVAL - 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
Max plate voltage
330 V
Max screen voltage
100 V

Identical dual sections compressed where applicable; published ratings/characteristics 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

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum Plate Voltage

    330 V

  • Anode Voltage

    100 V

  • Grid 2 Voltage

    70 V

  • Maximum Anode Voltage

    330 V

  • Maximum Grid 2 Voltage

    100 V

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater voltage

    6.3 V

    Published rating

  • Heater current

    150 mA

    Published rating

  • Published characteristic value

    70

    PremiumQuality

Other

  • Plate/anode voltage

    100 V

    PremiumQuality

  • Published current value

    1.35 mA

    PremiumQuality

Data set 03

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    150 mA

    Published heater rating

Other

  • Plate voltage

    100 V

    Published characteristic point

  • Grid 3+4 voltage

    250 V

    Published characteristic point

  • Screen voltage

    70 V

    Published characteristic point

  • Plate current

    1.35 mA

    Published characteristic point

  • Maximum plate voltage

    330 V

    Absolute limit

  • Maximum screen voltage

    100 V

    Absolute limit

Data set 04

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Heater current

    150 mA

    Published datasheet value