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

Power - Pentode (NOT beam) ·Pentode-Triode

ECL82

Combination valve incorporating a power-output pentode with diode or triode sections for audio-frequency amplification, detection, or driver service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9C12
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 780 mA

Description

Triode-pentode for television vertical deflection and audio preamplifier/output stages.

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
6.3 V
Nominal heater current
780 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
28000 Ω
Transconductance
0.0025 S
Amplification factor
70
Max plate voltage
300 V
Max plate dissipation
1 W
Max cathode current
15 mA

Published maximum ratings/characteristics promoted from source.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
25000 Ω
Transconductance
0.0064 S
Amplification factor
9.5
Max plate voltage
600 V
Max screen voltage
300 V
Max plate dissipation
7 W
Max screen dissipation
3.2 W
Max cathode current
50 mA

Published maximum ratings/characteristics promoted from source.

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

Other

  • Tension de l’anode

    100 V

    Triode

  • Tension de la grille

    0 V

    Triode

  • Resistance interne

    28 kohm

    Triode

  • Tension anodique de pointe

    600 V

    Triode

  • Tension de l'anode

    300 V

    Triode

Capacitance

  • Capacite de la grille

    2.7 pF

    Triode

  • Capacite de l'anode

    4.3 pF

    Triode

  • Capacite anode-grille

    4.2 pF

    Triode

  • Capacite anode triode-anode pentode. Cara < 0,25 pF

    0.25 pF

    Triode

  • Capacite grille triode-grille 1 pentode. Cgg, <

    0.025 pF

    Triode

  • Capacite grille triode-anode pentode. Cga < 0,02 pF

    0.02 pF

    Triode

  • Capacite anode triode-grille1 pentode. Car g; < 0,02 pF

    0.02 pF

    Triode

SECTION 2

Pentode

Characteristic

  • Indirect (cathodes isolees du filament)

    63 V

    Pentode

  • Alimentation du filament en parallele V

    780 mA

    Pentode

Other

  • Tension de l’'anode

    200 V

    Pentode

  • Tension de la grille 2

    200 V

    Pentode

  • Tension de la grille 1

    16 V

    Pentode

  • Courant anodique

    35 mA

    Pentode

  • Courant de la grille 2

    7 mA

    Pentode

  • Resistance interne

    20 kohm

    Pentode

  • Pente

    64 mA/V

    Pentode

  • Impedance de charge

    5.6 kohm

    Pentode

  • Puissance de sortie

    35 W

    Pentode

  • Capacite de la grille 41

    9.3 pF

    Pentode

  • Capacite de l’anode

    8 pF

    Pentode

  • Capacite anode grille 1

    0.3 pF

    Pentode

  • Tension de l’anode

    300 V

    Pentode

  • Tension de la grille 2

    300 V

    Pentode

  • Puissance dissipee sur l'anode . Pa

    5 W

    Pentode

  • Puissance dissipee sur la grille 2 Pgs _

    1.8 W

    Pentode

  • (pointe)

    3.2 W

    Pentode

  • Courant cathodique

    50 mA

    Pentode

  • Resistance du circuit de la grille 1 Rg,

    2 Mohm

    Pentode

  • Tension entre filament et cathode Vkf

    109 V

    Pentode

  • 85 mA pour Va

    170 V

    Pentode

Data set 02

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage

    100 V

    TriodeSection

  • Plate Current

    3.5 mA

    TriodeSection

Characteristic

  • Transconductance

    2500 µS

    TriodeSection

  • Amplification Factor

    70

    TriodeSection

SECTION 2

Pentode

Other

  • Plate Voltage

    170 V

    PentodeSection

  • Screen Voltage

    170 V

    PentodeSection

Characteristic

  • Transconductance

    7500 µS

    PentodeSection

  • Plate Resistance

    16000 ohm

    PentodeSection

  • Application

    Frame output / sound output

    PentodeSection

Data set 03

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    780 mA

    Nominal

  • Maximum Plate Voltage

    300 V

  • Maximum Plate Dissipation

    1 W

Characteristic

  • Transconductance

    2500 µS

    Typical

  • Amplification Factor

    70

    Typical

SECTION 2

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    780 mA

    Nominal

  • Maximum Plate Voltage

    600 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    7 W

Characteristic

  • Transconductance

    6400 µS

    Typical

  • Amplification Factor

    9.5

    Typical

Data set 04

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    780 mA

SECTION 2

Pentode

Characteristic

  • Application

    Frame output or audio output

Data set 05

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    780 mA

    Published heater rating

  • Triode amplification factor

    70

    TriodeSection VoltageAmplifier

  • Triode plate resistance

    28000 ohm

    TriodeSection VoltageAmplifier

Other

  • Triode plate voltage

    100 V

    TriodeSection VoltageAmplifier

  • Triode grid voltage

    0 V

    TriodeSection VoltageAmplifier

  • Triode plate current

    3.5 mA

    TriodeSection VoltageAmplifier

SECTION 2

Pentode

Other

  • Pentode plate voltage

    170 V

    PentodeSection PowerOutput

  • Pentode screen voltage

    115 V

    PentodeSection PowerOutput

  • Pentode plate current

    41 mA

    PentodeSection PowerOutput

  • Pentode screen current

    9 mA

    PentodeSection PowerOutput

  • Pentode power output

    7.5 W

    PentodeSection PowerOutput

Characteristic

  • Pentode transconductance

    7200 µS

    PentodeSection PowerOutput

Data set 06

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    780 mA

    Published heater rating

Other

  • Triode plate voltage

    100 V

    TriodeSection

  • Triode plate current

    3.5 mA

    TriodeSection

  • Pentode plate voltage

    170 V

    PentodeSection

  • Pentode screen voltage

    170 V

    PentodeSection

  • Pentode grid bias

    -11.5 V

    PentodeSection

Data set 07

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Plate Voltage

    100 V

    TriodeSection

  • Plate Current

    3.5 mA

    TriodeSection

  • Grid Voltage

    0 V

    TriodeSection

  • Transconductance

    2500 uS

    TriodeSection

  • Plate Resistance

    28000 ohm

    TriodeSection

  • Amplification Factor

    70

    TriodeSection

  • Plate Resistance

    28000 ohm

  • Transconductance

    2500 uS

  • Amplification Factor

    70

Other

  • Maximum Plate Voltage

    300 V

  • Maximum Plate Dissipation

    1 W

  • Maximum Cathode Current

    15 mA

SECTION 2

Pentode

Characteristic

  • Plate Voltage

    250 V

    PentodeSection

  • Screen Voltage

    250 V

    PentodeSection

  • Plate Current

    28 mA

    PentodeSection

  • Screen Current

    5.7 mA

    PentodeSection

  • Grid Voltage

    -22.5 V

    PentodeSection

  • Transconductance

    5000 uS

    PentodeSection

  • Plate Resistance

    25000 ohm

    PentodeSection

  • Grid1-to-Grid2 Amplification Factor

    9.5

    PentodeSection

  • Plate Resistance

    25000 ohm

  • Transconductance

    5000 uS

  • Amplification Factor

    9.5

Other

  • Maximum Plate Voltage

    300 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    7 W

  • Maximum Screen Dissipation

    3.2 W

  • Maximum Cathode Current

    50 mA

  • Interelectrode Capacitance Data Published

    1

    SourceTablePresent

Data set 08

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    780 mA

    Nominal

  • Maximum Plate Voltage

    300 V

  • Maximum Plate Dissipation

    1 W

  • Maximum Cathode Current

    15 mA

Characteristic

  • Transconductance

    2500 µS

    Typical

  • Amplification Factor

    70

    Typical

  • Plate Resistance

    40000 ohm

    Typical

SECTION 2

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    780 mA

    Nominal

  • Maximum Plate Voltage

    600 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    7 W

  • Maximum Screen Dissipation

    2.5 W

  • Maximum Cathode Current

    60 mA

Characteristic

  • Transconductance

    6400 µS

    Typical

  • Amplification Factor

    9.5

    Typical

  • Plate Resistance

    20000 ohm

    Typical

Data set 09

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    780 mA

    Nominal

  • Maximum Plate Voltage

    300 V

  • Maximum Plate Dissipation

    1 W

  • Maximum Cathode Current

    15 mA

Characteristic

  • Transconductance

    2500 µS

    Typical

  • Amplification Factor

    70

    Typical

  • Plate Resistance

    40000 ohm

    Typical

SECTION 2

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    780 mA

    Nominal

  • Maximum Plate Voltage

    600 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    7 W

  • Maximum Screen Dissipation

    2 W

  • Maximum Cathode Current

    60 mA

Characteristic

  • Transconductance

    6400 µS

    Typical

  • Amplification Factor

    9.5

    Typical

  • Plate Resistance

    20000 ohm

    Typical

Data set 10

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage Vh

    6.3 V

  • Heater Current Ih

    780 mA

  • Maximum Screen Grid Dissipation pg2(max) — 1'

    8 W

  • Maximum Anode Supply Voltage (1a=0) va(b)max 550

    550 V

  • Maximum Anode Voltage Va(max) 300

    300 V

  • Maximum Screen Grid Supply Voltage (Ig2=0) Vg2(b)max —

    550 V

  • Maximum Screen Grid Voltage Vg2(max) —

    300 V

  • Maximum Mean Cathode Current lk(av)max 15

    50 mA

Characteristic

  • For Va ~250V 10

    7 W

  • For Va >250V —

    50 W

  • For speech and music —

    32 W

  • Pulse Negative —

    500 V

Data set 11

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Input Resistance at frequency of

    50 MHz

    Published in approved ECL82 target datasheet entry; Section1

  • Equivalent Noise Resistance

    1500 Ω

    Published in approved ECL82 target datasheet entry; Section1

  • For fixed-bias operation 0.5

    0.5 MΩ

    Published in approved ECL82 target datasheet entry; Section1

  • For cathode-bias operation 0.5

    1 MΩ

    Published in approved ECL82 target datasheet entry; Section1

  • Heater Voltage 6.3

    50 V

    Published in approved ECL82 target datasheet entry; Section1

  • Heater Current 0.78

    100 mA

    Published in approved ECL82 target datasheet entry; Section1

  • Plate Supply Voltage 550

    900 V

    Published in approved ECL82 target datasheet entry; Section1

  • Plate Voltage 300

    600 V

    Published in approved ECL82 target datasheet entry; Section1

  • Grid-No.2 Supply Voltage

    550 V

    Published in approved ECL82 target datasheet entry; Section1

  • Plate Dissipation 1

    7 W

    Published in approved ECL82 target datasheet entry; Section1

  • Grid-No.2 Input

    1.8 W

    Published in approved ECL82 target datasheet entry; Section1

SECTION 2

Pentode

Other

  • Input Resistance at frequency of

    50 MHz

    Published in approved ECL82 target datasheet entry; Section2

  • Equivalent Noise Resistance

    1500 Ω

    Published in approved ECL82 target datasheet entry; Section2

  • For fixed-bias operation 0.5

    0.5 MΩ

    Published in approved ECL82 target datasheet entry; Section2

  • For cathode-bias operation 0.5

    1 MΩ

    Published in approved ECL82 target datasheet entry; Section2

  • Heater Voltage 6.3

    50 V

    Published in approved ECL82 target datasheet entry; Section2

  • Heater Current 0.78

    100 mA

    Published in approved ECL82 target datasheet entry; Section2

  • Plate Supply Voltage 550

    900 V

    Published in approved ECL82 target datasheet entry; Section2

  • Plate Voltage 300

    600 V

    Published in approved ECL82 target datasheet entry; Section2

  • Grid-No.2 Supply Voltage

    550 V

    Published in approved ECL82 target datasheet entry; Section2

  • Plate Dissipation 1

    7 W

    Published in approved ECL82 target datasheet entry; Section2

  • Grid-No.2 Input

    1.8 W

    Published in approved ECL82 target datasheet entry; Section2

  • Plate Voltage 100

    200 V

    Published in approved ECL82 target datasheet entry; Section2

  • For fixed-bias operation I

    1 MΩ

    Published in approved ECL82 target datasheet entry; Section2

  • For cathode-bias operation 2

    2 MΩ

    Published in approved ECL82 target datasheet entry; Section2

Characteristic

  • Plate Resistance (Approx.)

    0.02 MΩ

    Published in approved ECL82 target datasheet entry; Section2

  • Transconductance 2500

    6400 µS

    Published in approved ECL82 target datasheet entry; Section2

  • Plate Current 3.5

    35 mA

    Published in approved ECL82 target datasheet entry; Section2

  • Grid-No.2 Current

    7 mA

    Published in approved ECL82 target datasheet entry; Section2

Data set 12

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Anode current I

    3.5 mA

    Published datasheet value

  • Transconductance S

    2.2 mA/V

    Published datasheet value

  • Anode peak voltage Vap max

    2.5 kV

    Published datasheet value

  • Anode current Ia

    41 mA

    Published datasheet value

  • Transconductance S

    7.5 mA/V

    Published datasheet value

  • Output power Wo

    3.5 W

    Published datasheet value

  • Heater voltage Vs

    6.3 V

    Published datasheet value

  • Heater current I¢

    780 mA

    Published datasheet value

Capacitance

  • Anode to all except grid Ca(g)

    4.3 pF

    Published datasheet value

  • Grid to all except anode Cg(a)

    2.7 pF

    Published datasheet value

  • Anode to grid Cag

    4.4 pF

    Published datasheet value