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Power - Beam (NOT sweep) ·BeamPower-Triode

10JA8

Combination receiving tube incorporating a beam-power audio output section with an additional small-signal section for television or radio receiver circuitry.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9DX
Socket code
B9A
Base pins
9
Nominal heater
10.5 V / 450 mA

Description

Miniature type used in color and black-and-white tele- vision receiver applications. The triode unit is used as gpy a sync separator, sync clipper, and phase inverter; the pentode unit is used as a video amplifier. Outlines section, 6E; requires miniature 9-contact socket.

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
9DX
Socket code
B9A
Base pins
9
Nominal heater voltage
10.5 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9DX - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12KBK — Cathode

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN22G1BG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN32PBP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN4H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN5H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN61G3AG3 — Suppressor GridGroup 9DX6

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN6ISAIS — Internal ScreenGroup 9DX6

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN61KAK — CathodeGroup 9DX6

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN71G1AG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN81G2AG2 — Screen Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

PIN91PAP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DX

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
39000 Ω
Transconductance
0.00155 S
Amplification factor
60
Max plate voltage
300 V
Max plate dissipation
1 W

Promoted characteristics use the first listed triode operating point; alternate points preserved in parameters.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
66000 Ω
Transconductance
0.0126 S
Amplification factor
60
Max plate voltage
300 V
Max screen voltage
330 V
Max plate dissipation
5 W
Max screen dissipation
1.5 W

Promoted characteristics use the first fully specified pentode characteristic point; alternates preserved in parameters.

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 1

Triode

Characteristic

  • Triode Plate Resistance

    19000 ohm

    AlternateOperatingPoint

  • Triode Transconductance

    3700 uS

    AlternateOperatingPoint

  • Triode Amplification Factor

    70

    AlternateOperatingPoint

  • Pentode Plate Resistance

    70000 ohm

    AlternateOperatingPoint

  • Pentode Transconductance

    14000 uS

    AlternateOperatingPoint

  • | Ep =

    200 V

  • Grid #

    1 V

  • Ec2

    135 V

  • Grid #

    2 W

Capacitance

  • Grid to Plate

    4.6 pF

  • Input Capacitance

    2.6 pF

  • Output Capacitance

    2.6 pF

SECTION 2

Beam Power

Capacitance

  • Grid #1 to Plate

    0.1 pF

  • Input Capacitance

    11 pF

  • Output Capacitance

    4.4 pF

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater Voltage

    10.5 V

  • Heater Current

    450 mA

  • ControlledWarmupHeater

    1 boolean

  • Heater Warmup Time

    11 s

  • Plate Voltage

    200 V

  • Grid Voltage

    -2 V

  • Plate Current

    4 mA

  • Plate Resistance

    17000 ohm

  • Transconductance

    4000 uS

  • Amplification Factor

    70

  • Grid Cutoff Voltage

    -7 V

  • Grid To Plate Capacitance

    2 pF

  • Input Capacitance

    3 pF

  • Output Capacitance

    2 pF

SECTION 2

Beam Power

Other

  • Plate Voltage Maximum

    330 V

  • Screen Supply Voltage Maximum

    330 V

  • Plate Dissipation Maximum

    5 W

  • Screen Dissipation Maximum

    1.5 W

  • Grid1CircuitResistanceMaximum

    0.25 Mohm

    FixedBias

  • Grid1CircuitResistanceMaximum

    1 Mohm

    CathodeBias

Characteristic

  • Grid1ToPlateCapacitanceMaximum

    0.1 pF

  • Input Capacitance

    11 pF

  • Output Capacitance

    4.8 pF

Data set 03

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Plate voltage

    200 V

    TriodeSection

  • Grid 1 voltage

    -2 V

    TriodeSection

  • Plate current

    3.5 mA

    TriodeSection

  • Heater warm-up time

    11 s

    WholeTube

SECTION 2

Beam Power

Other

  • Plate voltage

    200 V

    PentodeSection;VideoAmplifier

  • Grid 2 voltage

    135 V

    PentodeSection;VideoAmplifier

  • Plate current

    18 mA

    PentodeSection;VideoAmplifier

  • Grid 2 current

    4 mA

    PentodeSection;VideoAmplifier

Data set 04

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Plate Voltage

    135 V

  • Plate Resistance

    19000 Ω

  • Transconductance

    3700 µS

Other

  • Maximum Plate Voltage

    300 V

  • Plate Dissipation

    1 W

SECTION 2

Beam Power

Characteristics

  • Plate Voltage

    200 V

  • Screen Voltage

    135 V

  • Plate Resistance

    70000 Ω

  • Transconductance

    14000 µS

Other

  • Maximum Plate Voltage

    330 V

  • Maximum Screen Supply Voltage

    330 V

  • Plate Dissipation

    5 W

  • Screen Input

    1.5 W

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater Voltage (ac/dc)

    10.5 volts

    Published value from supplied target entry

  • Heater Current

    0.45 ampere

    Published value from supplied target entry

  • Heater Warm-up Time

    11 seconds

    Published value from supplied target entry

  • Plate Voltage

    330 volts

    Published value from supplied target entry

  • Grid-No

    330 volts

    Published value from supplied target entry

  • Grid-No

    300

    Published value from supplied target entry

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value

    0 volts

    Published value from supplied target entry

  • Plate Dissipation

    5 watts

    Published value from supplied target entry

  • Grid-No

    2

    Published value from supplied target entry

  • For Grid-No

    165 volts

    Published value from supplied target entry

  • For Grid-No

    300 volts

    Published value from supplied target entry

  • Plate Voltage

    200

    Published value from supplied target entry

  • Grid-No

    135 volts

    Published value from supplied target entry

  • Grid-No.l Voltage

    -1.5 volts

    Published value from supplied target entry

  • Amplification Factor

    70

    Published value from supplied target entry

  • Plate Resistance M0

    70000 ohms

    Published value from supplied target entry

  • Transconductance

    14000

    Published value from supplied target entry

  • Plate Current

    18 mA

    Published value from supplied target entry

  • Grid-No

    4

    Published value from supplied target entry

  • for plate current of

    -5 volts

    Published value from supplied target entry

  • (ac/dc),

    0.45 amperes

    Published value from supplied target entry

  • Plate Voltage

    200 volts

    Published value from supplied target entry

  • Grid-No

    150 volts

    Published value from supplied target entry

  • Grid-No.l Voltage

    0 volts

    Published value from supplied target entry

  • Amplification Factor

    46

    Published value from supplied target entry

  • Plate Current

    24 mA

    Published value from supplied target entry

  • Grid-No

    18 mA

    Published value from supplied target entry

  • Grid Voltage (Approx.) for plate current of

    -4.8

    Published value from supplied target entry

  • Grid-No

    1

    Published value from supplied target entry

Capacitance

  • Grid to Plate

    4 PF

    Published value from supplied target entry

  • Grid to Cathode, Pentode Cathode, Heater, Pentode Grid No

    3

    Published value from supplied target entry

  • Plate to Cathode. Pentode Cathode, Heater, Pentode Grid No

    3

    Published value from supplied target entry

  • Plate to Cathode, Heater, Grid No

    3

    Published value from supplied target entry

  • Plate to Triode Grid

    0.018 PF

    Published value from supplied target entry

  • Plate to Triode Plate

    0.17 PF

    Published value from supplied target entry