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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6084

Premium sharp-cutoff amplifier pentode documented by Amperex and other manufacturers. Its special-quality construction supports dependable fixed-gain signal amplification, with published ratings and characteristics for professional electronic service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9BJ
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

6084 is listed in the supplied Amperex material as a sharp-cutoff premium amplifier pentode. 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
9BJ
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9BJ - 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
Plate resistance
1800000 Ω
Transconductance
0.00185 S
Amplification factor
25
Max plate voltage
300 V
Max screen voltage
200 V
Max plate dissipation
1.3 W
Max screen dissipation
0.3 W
Max cathode current
9 mA

Published maximum ratings, representative operating conditions, and rectifier 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

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate voltage

    300 V

    Published table

  • Plate voltage

    200 V

    Published table

  • Screen voltage

    250 V

    Published table

  • Plate current

    9 mA

    Published table

Characteristic

  • Plate resistance

    1850 ohm

    Published table

  • Transconductance

    650 µS

    Published table

  • Amplification factor

    25

    Published table

  • Heater/filament voltage

    6.3 V

    Published rating

  • Heater/filament current

    300 mA

    Published rating

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate voltage

    300 V

    Published handbook rating

  • Maximum screen voltage

    200 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    100 V

    ClassA

  • Control-grid bias

    2 V

    ClassA

  • Plate current

    3 mA

    ClassA

  • Screen current

    0.55 mA

    ClassA

Characteristic

  • Plate resistance

    1800000 ohm

    Published handbook characteristic

  • Transconductance

    1850 µS

    Published handbook characteristic

  • Heater/filament voltage

    6.3 V

    Published heater/filament rating

  • Heater/filament current

    300 mA

    Published heater/filament rating

Data set 03

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

    300 mA

    Published rating

  • Published characteristic value

    5

    PremiumQuality

  • Published characteristic value 2

    7.3

    PremiumQuality

Other

  • Maximum plate voltage

    300 V

    PremiumQuality

  • Plate voltage

    200 V

    PremiumQuality

  • Plate current

    9 mA

    PremiumQuality

Data set 04

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate current

    3 mA

    Typical

  • Screen current

    0.55 mA

    Typical

  • Plate-grid1 capacitance

    0.025 pF

    Maximum

  • Cathode-heater capacitance

    3.7 pF

    Interelectrode