Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Voltage Pentode ·Pentode

E80F

Special-quality audio-frequency amplifying pentode for industrial applications requiring stable characteristics and long life. Philips and Amperex documentation emphasize professional AF voltage amplification with extended dependable service.

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

Description

Special-quality audio-frequency amplifying pentode for industrial applications requiring stable characteristics and long life.

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
300 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
Plate resistance
1500000 Ω
Transconductance
0.00185 S
Max plate voltage
300 V
Max screen voltage
200 V
Max plate dissipation
1.3 W
Max cathode current
9 mA

Special-quality long-life pentode for professional amplifier service.

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

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 03

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    250 V

  • Screen voltage

    100 V

  • Plate current

    3 mA

  • Screen current

    0.65 mA

Characteristic

  • Transconductance

    1850 uS

  • Plate resistance

    1.5 MOhm

  • Amplification factor grid2-grid1

    25

Data set 04

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

    300 mA

    Published heater rating

  • Transconductance

    1850 µS

    Published characteristic point

  • Plate resistance

    1500000 ohm

    Published characteristic point

  • Amplification factor

    25

    Published characteristic point

Other

  • Plate voltage

    250 V

    Published characteristic point

  • Screen voltage

    100 V

    Published characteristic point

  • Plate current

    3 mA

    Published characteristic point

  • Screen current

    0.65 mA

    Published characteristic point

Data set 05

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Ih

    300 mA

    Published in approved E80F.pdf target datasheet; Section1

  • The maximum va riat io n of heat e r cu rrent at Vh = 6.3V is ± 1

    5 mA

    Published in approved E80F.pdf target datasheet; Section1

  • gm

    1.2 mA

    Published in approved E80F.pdf target datasheet; Section1

Other

  • Cf n 5.0

    0.5 pF

    Published in approved E80F.pdf target datasheet; Section1

  • Cou t 7.3

    0.5 pF

    Published in approved E80F.pdf target datasheet; Section1

  • C :~ l- h <

    0.002 pF

    Published in approved E80F.pdf target datasheet; Section1

  • e ll - 1\

    3.7 pF

    Published in approved E80F.pdf target datasheet; Section1

  • t 1a 3.0

    0.5 mA

    Published in approved E80F.pdf target datasheet; Section1

  • tg m 1.85

    0.35 mA

    Published in approved E80F.pdf target datasheet; Section1

  • P g2 max

    400 mW

    Published in approved E80F.pdf target datasheet; Section1

  • h, max

    9 mA

    Published in approved E80F.pdf target datasheet; Section1

  • Tbulb max

    170 °C

    Published in approved E80F.pdf target datasheet; Section1

Data set 06

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

    Published datasheet value

  • Heater voltage

    6 V

    Published datasheet value

  • Heater voltage

    4.5 V

    Published datasheet value

  • Heater current

    300 mA

    Published datasheet value

  • Heater current

    315 mA

    Published datasheet value

Characteristics

  • Anode current

    3 mA

    Published datasheet value

  • Anode current

    1.37 mA

    Published datasheet value

  • Anode voltage

    250 V

    Published datasheet value

  • Anode voltage

    40 V

    Published datasheet value

  • Screen-grid voltage

    100 V

    Published datasheet value

  • Screen-grid voltage

    40 V

    Published datasheet value

  • Mutual conductance

    1.85 mA/V

    Published datasheet value