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Voltage - Dual Triode (similar high frequency) ·Triode-Triode

PCC189

Variable-mu low-noise dual triode with 300 mA series heater, designed for gain-controlled VHF cascode amplifiers in television tuners.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9C12
Socket code
B9A
Base pins
9
Nominal heater
7.6 V / 300 mA

Description

300 mA series-heater variable-mu low-noise dual triode for VHF cascode amplifiers; the source refers to ECC189 for remaining characteristics.

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
9C12
Socket code
B9A
Base pins
9
Nominal heater voltage
7.6 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9C12 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
2500 Ω
Transconductance
0.0125 S
Amplification factor
31
Max plate voltage
130 V
Max plate dissipation
1.8 W
Max cathode current
22 mA

Triode section; promoted values are taken from the approved source where explicitly published.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
2500 Ω
Transconductance
0.0125 S
Amplification factor
31
Max plate voltage
130 V
Max plate dissipation
1.8 W
Max cathode current
22 mA

Second physical triode section; identical twin section represented explicitly.

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 La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Indirect (cathodes isolees du filament)

    3 A

    Triode

  • Alimentation en parallele ! Vt

    72 V

    Triode

  • Capacite entre les anodes Caa

    0.015 pF

    Triode

  • Capacite grille G-anode A' Cga'

    0.004 pF

    Triode

Other

  • Tension de la grille

    -12 V

    Triode

  • Plate current

    15 mA

    Triode

  • Plate resistance

    2.72 kohm

    Triode

  • Transconductance nominale

    125 mA/V

    Triode

  • Resistance equivalente de souffle

    850 ohm

    Triode

  • a 5 % de Snominale. Vg (5%)

    -5 V

    Triode

  • Tension dela grillea 1 % de Snominale. Vg (1%)

    -9 V

    Triode

  • Plate voltage

    130 V

    Triode

  • Tension de la grille

    50 V

    Triode

  • filament

    20 kohm

    Triode

  • triode T

    80 V

    Triode

  • 130 V

    130 V

    Triode

  • 20 cnc e Vk'f

    150 V

    Triode

Capacitance

  • Capacite de la grille. Cg (kK+f+b)

    3.4 pF

    Triode

  • Plate capacitance Ca (Kfb)

    2.4 pF

    Triode

  • grille

    1.9 pF

    Triode

  • ment

    22 pF

    Triode

  • cathode

    0.17 pF

    Triode

  • Capacite de la ca- Ck ; (g'f+b)

    6.3 pF

    Triode

  • Plate capacitance Ca' (g'f+b)

    3.9 pF

    Triode

  • filament

    3 pF

    Triode

Data set 02

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater Voltage

    7.6 V

  • Heater Current

    300 mA

Other

  • Maximum Anode Supply Voltage

    550 V

  • Maximum Anode Voltage

    130 V

Data set 03

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater or filament voltage

    7.6 V

    Published nominal or stated operating value

  • Heater or filament current

    300 mA

    Published nominal or stated operating value

  • Transconductance

    12500 µS

    Published/reference characteristic

Other

  • Maximum plate dissipation

    1.8 W

    Published/reference maximum rating

Data set 04

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

  • Application

    VHFCascodeAmplifier text

Data set 05

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater voltage

    7.6 V

    Published nominal value

  • Heater current

    300 mA

    Published nominal value

  • Transconductance

    12500 µS

    Published operating characteristic

Other

  • Maximum plate dissipation

    1.8 W

    Published maximum rating

Data set 06

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Typical plate voltage

    90 V

  • Typical grid voltage

    -1.4 V

  • Typical plate current

    15 mA

  • Transconductance

    12500 uS

  • Amplification factor

    31

  • Plate resistance

    2500 ohm

  • Controlled transconductance

    625 uS

    GridVoltage=-5V

  • Controlled transconductance

    125 uS

    GridVoltage=-9V

Capacitance

  • Grid-cathode-heater-screen capacitance

    3.5 pF

  • Anode-cathode-heater-screen capacitance

    2.3 pF

  • Anode-grid capacitance

    1.9 pF

  • Grid-heater capacitance

    0.28 pF

  • Anode-anode capacitance

    0.015 pF

Other

  • Maximum cathode-heater voltage input unit

    80 V

    Section1

  • Maximum cathode-heater voltage output unit

    180 V

    Section2;CathodePositive