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Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode

6BJ8

Twin-diode medium-mu triode for television receiver applications, with published operating data including horizontal-deflection oscillator service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 600 mA

Description

Twin diode medium-mu triode for television receiver applications. The supplied datasheet was read for heater data, maximum ratings, characteristics, typical operating information, and interelectrode capacitances where published.

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
6.3 V
Nominal heater current
600 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

3 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances
Rectifier nominal output current
9 mA
Rectifier forward voltage drop
2.6 V

Representative row for two diode sections.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
7150 Ω
Transconductance
0.0028 S
Amplification factor
20
Max plate voltage
330 V
Max plate dissipation
4 W
Max cathode current
22 mA

Published promoted values applied where applicable; additional table data retained as parameters.

Section 3

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Second physical Diode section added for documented twin-diode triode construction.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 2

Triode

Other

  • Plate Voltage

    250 V

    ClassA

  • PositivePulsePlateVoltageMaximum

    1200 V

    HorizontalDeflectionOscillator

  • Heater Warmup Time

    11 s

Characteristic

  • Plate Current

    8 mA

    ClassA

Data set 02

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

  • Voltage

    6.3 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Current

    600 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid to plate

    2.6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid to heater and cathode

    2.8

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate to heater and cathode — published value 1

    0

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate to heater and cathode — published value 2

    31

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • cathode and heater

    1.9

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • plate and heater

    4.6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Voltage — published value 1

    90 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Voltage — published value 2

    250 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid Voltage — published value 1

    0 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid Voltage — published value 2

    -9 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Amplification Factor — published value 1

    22 A

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Amplification Factor — published value 2

    20 A

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Resistance (Approx.) — published value 1

    4700 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Resistance (Approx.) — published value 2

    7150 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Transconductance — published value 1

    4700

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Transconductance — published value 2

    2800

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Current — published value 1

    13.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Current — published value 2

    8 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1- Diode-No.2 — published value 1

    1

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1- Diode-No.2 — published value 2

    5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate

    6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2- Diode-No.2

    2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Cathode

    7

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 3- Diode-No.l — published value 1

    3

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 3- Diode-No.l — published value 2

    8

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 4 -Heater

    4

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • DC PLATE VOLTS — published value 1

    92 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • DC PLATE VOLTS — published value 2

    9364 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

  • Diode-No.l plate to triode grid

    0.07 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Diode-No.2 plate to triode grid

    0.11 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Diode-No.l plate to diode-No.2 plate

    0.06 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE VOLTAGE

    300 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Positive bias value

    0 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • AVERAGE CATHODE CURRENT

    20 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE DISSIPATION

    3.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Heater negative with respect to cathode

    200 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Heater positive with respect to cathode

    200 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid-Circuit Resistance

    1 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • DC PLATE VOLTAGE

    300 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PEAK NEGATIVE-PULSE GRID VOLTAGE

    250 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE DISSIPATION

    3.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Heater negative with respect to cathode

    200 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • cathode-bias operation — published value 1

    2 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • cathode-bias operation — published value 2

    2 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE CURRENT

    54 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • CURRENT

    9 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.