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

Voltage Triode Pentode ·Pentode-Triode

10JY8

Television triode-pentode with a video-amplifier pentode and sync-separator triode for receiver signal-processing stages.

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 television receiver applications. The pentode unit is used as a video amplifier, and the triode unit as a sync separator. 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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
55000 Ω
Transconductance
0.011 S
Amplification factor
46
Max plate voltage
330 V
Max screen voltage
165 V
Max plate dissipation
5 W
Max screen dissipation
1.1 W

Published maximum ratings, characteristics, typical operation, and capacitance material reviewed.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
4400 Ω
Transconductance
0.0104 S
Amplification factor
46
Max plate voltage
330 V
Max plate dissipation
2 W

Published maximum ratings, characteristics, typical operation, and capacitance material reviewed.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate Voltage

    330 V

  • Plate Voltage

    -55611 V

  • Screen Voltage

    1 V

  • Screen Voltage

    55611 V

  • Plate Dissipation

    5 W

  • ScreenDissipation

    1.1 W

  • Plate Current

    15 mA

  • Screen Current

    2 mA

  • Screen Current

    2 mA

  • Plate Voltage

    200 V

    AverageCharacteristics

  • Screen Voltage

    150 V

    AverageCharacteristics

Capacitance

  • GridNumber1toPlateCapacitance

    0.08 pF

  • Input Capacitance

    10 pF

  • Output Capacitance

    46 pF

  • GridtoPlateCapacitance

    2.8 pF

  • Input Capacitance

    42 pF

Characteristic

  • Plate Current

    24 mA

    AverageCharacteristics

  • Screen Current

    4.8 mA

    AverageCharacteristics

SECTION 2

Triode

Other

  • Plate Voltage

    125 V

    AverageCharacteristics

Characteristic

  • Plate Current

    15 mA

    AverageCharacteristics

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 2

Triode

Characteristic

  • 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

    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 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