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Voltage Radio Detector Converter ·Pentode

UF80

High-frequency pentode for 100 mA series-heater AC/DC receivers, particularly RF amplification and mixer service in FM equipment. High transconductance provides strong gain and useful frequency-conversion performance.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
19 V / 100 mA

Description

RF pentode for series-heater AC/DC receivers, primarily RF amplifier or mixer service in FM receivers.

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
-
Socket code
B9A
Base pins
9
Nominal heater voltage
19 V
Nominal heater current
100 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
Plate resistance
650000 Ω
Transconductance
0.0068 S
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
2.5 W
Max screen dissipation
0.5 W
Max cathode current
25 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed where applicable.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    300 mA

    Nominal

  • Maximum Plate Voltage

    300 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    2.5 W

  • Maximum Screen Dissipation

    0.5 W

  • Maximum Cathode Current

    25 mA

Characteristic

  • Transconductance

    7400 µS

    Typical

  • Plate Resistance

    1000000 ohm

    Typical

Data set 02

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate Voltage

    170 V

  • Plate Current

    10 mA

  • Screen Voltage

    170 V

  • Screen Current

    2.5 mA

Characteristic

  • Transconductance

    7400 µS

  • Plate Resistance

    400000 ohm

Data set 03

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

  • Application

    RF amplifier / mixer

Data set 04

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    170 V

    RF/IF amplifier

  • Screen voltage

    170 V

    RF/IF amplifier

  • Plate current

    10 mA

    RF/IF amplifier

  • Screen current

    2.5 mA

    RF/IF amplifier

  • Maximum plate voltage

    250 V

  • Maximum screen voltage

    250 V

  • Maximum plate dissipation

    2.5 W

Characteristic

  • Transconductance

    7400 uS

  • Plate resistance

    0.4 Mohm

Data set 05

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • 1) Input resistance at 50 Mc/s; pin 1 connected to

    1 s

    1) Input resistance at 50 Mc/s; pin 1 connected to

  • 2 With automatic grid bias

    2 W

    2 With automatic grid bias

  • 3 With fixed grid bias

    3 W

    3 With fixed grid bias