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Voltage Pentode ·Pentode

D3F

Pentode designed for ultra-short-wave radio-frequency amplification in receiving equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
ACORN5
Base pins
5
Nominal heater
1.25 V / 50 mA

Description

Pentode vacuum tube documented for ultra-short-wave applications, with heater, operating-characteristic, and limiting-rating data extracted from the supplied datasheet.

Socket description

Acorn 5-pin

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
ACORN5
Base pins
5
Nominal heater voltage
1.25 V
Nominal heater current
50 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

Pentode

X-ray radiationInterelectrode capacitances
Max plate voltage
135 V
Max plate dissipation
0.3 W

Primary physical 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

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    1.25 V

    Nominal

  • Heater current

    50 mA

    Nominal

Characteristic

  • Ohauffag. dir, par battery., alimeata- vf

    1.25 v

    Published datasheet value

  • tion en paraii.le If

    0 mA

    Published datasheet value

  • Va

    135 V

    Published datasheet value

  • Vg2

    67.5 V

    Published datasheet value

  • Vg3

    0 V

    Published datasheet value

  • Vgl

    -3 V

    Published datasheet value

  • Ia

    1.7 mA

    Published datasheet value

  • Yg2

    0.4 mA

    Published datasheet value

  • RI

    0.8 MA

    Published datasheet value

  • va max

    135 V

    Published datasheet value

  • Wa max

    0.3 W

    Published datasheet value

  • vgl max

    70 V

    Published datasheet value

  • Wg2 max

    0.1 W

    Published datasheet value

  • Ik max

    5 mA

    Published datasheet value

  • Vgl (Igl

    300 mA

    Published datasheet value