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Voltage - Triode (single) ·Triode

6814

Subminiature triode designed specifically for electronic-computer switching service, combining compact construction with characteristics suited to digital logic circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9A
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 150 mA

Description

Subminiature computer triode designed for electronic-computer switching service.

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
9A
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9A - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN22G1BG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN32KBK — Cathode

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN4H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN5H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN61PAP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN71G1AG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN81KAK — Cathode

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN9HCT—HCT — Heater Center Tap

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.006 S
Amplification factor
29
Max plate voltage
300 V
Max plate dissipation
2.2 W
Max cathode current
20 mA

Published maximum ratings, representative operating conditions, and available capacitance/rectifier data 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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    150 mA

    Nominal

  • Maximum Plate Voltage

    275 V

  • Maximum Plate Dissipation

    2.2 W

  • Maximum Cathode Current

    20 mA

Characteristic

  • Transconductance

    6000 µS

    Typical

  • Amplification Factor

    29

    Typical

  • Plate Resistance

    4800 ohm

    Typical

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    300 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Control-grid bias

    8.5 V

    ClassA

  • Plate current

    10.5 mA

    ClassA

  • Alternate plate voltage

    100 V

    ClassA OperatingPoint2

  • Alternate control-grid bias

    0 V

    ClassA OperatingPoint2

  • Alternate plate current

    11.8 mA

    ClassA OperatingPoint2

Characteristic

  • Plate resistance

    7700 ohm

    Published handbook characteristic

  • Transconductance

    2200 µS

    Published handbook characteristic

  • Amplification factor

    17

    Published handbook characteristic

  • Heater/filament voltage

    6.3 V

    Published heater/filament rating

  • Heater/filament current

    350 mA

    Published heater/filament rating

  • Alternate plate resistance

    6250 ohm

    ClassA OperatingPoint2

  • Alternate transconductance

    3100 µS

    ClassA OperatingPoint2

  • Alternate amplification factor

    19.5

    ClassA OperatingPoint2

Capacitance

  • Input capacitance

    1.6 pF

    Published capacitance column

  • Output capacitance

    0.5 pF

    Published capacitance column

  • Grid-to-plate capacitance

    1.5 pF

    Published capacitance column

Data set 03

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    150 mA

  • Application

    Pulse amplifier inverter cathode follower

    HighSpeedDigitalComputer

Other

  • Peak Heater Cathode Voltage

    200 V

  • Peak Cathode Current

    440 mA