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Voltage - Triode (single high frequency) ·Triode

EC97

RF triode intended for high-frequency television receiver service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
-
Nominal heater
6.3 V / 215 mA

Description

RF triode intended for high-frequency television receiver service.

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
-
Nominal heater voltage
6.3 V
Nominal heater current
215 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5000 Ω
Transconductance
0.013 S
Amplification factor
65
Max plate voltage
175 V
Max plate dissipation
2 W
Max cathode current
20 mA

High-slope RF triode for VHF television-tuner amplification.

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

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    135 V

  • Grid voltage

    -1 V

  • Plate current

    11 mA

  • Maximum plate voltage

    175 V

  • Maximum plate dissipation

    2 W

Characteristic

  • Transconductance

    13000 uS

  • Amplification factor

    65

Capacitance

  • Plate capacitance

    4.3 pF

  • Grid capacitance

    5 pF

  • Grid-plate capacitance

    0.48 pF

Data set 02

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Cg- k 3.2

    3.2 pF

    Published in approved EC97.pdf target datasheet; Section1

  • Cg- k + h+S 5.0

    5 pF

    Published in approved EC97.pdf target datasheet; Section1

  • Ca-k +h +S 4.2

    3.3 pF

    Published in approved EC97.pdf target datasheet; Section1

  • Ck-h 2.5

    2.5 pF

    Published in approved EC97.pdf target datasheet; Section1

  • la 10.5 13 14

    14 mA

    Published in approved EC97.pdf target datasheet; Section1

  • gm 13 15.5 16

    16 mA

    Published in approved EC97.pdf target datasheet; Section1

  • la 12 13 14

    14 mA

    Published in approved EC97.pdf target datasheet; Section1

  • gm 14 15.5 16

    16 mA

    Published in approved EC97.pdf target datasheet; Section1

  • Ik max

    20 mA

    Published in approved EC97.pdf target datasheet; Section1

Data set 03

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    215 mA

    Nominal

  • Maximum Plate Voltage

    200 V

  • Maximum Plate Dissipation

    2.2 W

  • Maximum Cathode Current

    20 mA

Characteristic

  • Transconductance

    13000 µS

    Typical

  • Amplification Factor

    65

    Typical

  • Plate Resistance

    5000 ohm

    Typical

Data set 04

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Typical anode voltage

    135 V

  • Typical anode current

    11 mA

Characteristic

  • Grid voltage at 0.65 mA/V

    3.1 V

    VariableMu