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Voltage - Triode (single) ·Triode

5977

Ruggedized long-life subminiature medium-mu triode for control circuits requiring stable performance under severe shock and vibration.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
8DK
Socket code
B8D
Base pins
8
Nominal heater
6.3 V / 150 mA

Description

The 5977 is a T-3 subminiature medium-mu triode designed for control circuits where long life and stable performance are important, with rugged construction for severe shock and vibration.

Socket description

Subminiature 8-lead

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
8DK
Socket code
B8D
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

8DK - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN3H—H — Heater

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN5KAK — Cathode

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN6H—H — Heater

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN8PAP — Plate (Anode)

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
4100 Ω
Transconductance
0.0045 S
Amplification factor
16
Max plate voltage
190 V
Max plate dissipation
3.3 W
Max cathode current
22 mA
Rectifier max heater-cathode voltage
200 V

Medium-mu triode; Class A characteristics and capacitances published.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater Voltages . . . . . . . 6.0 6.3 6.6V

    6.6 V

    Heater Voltages . . . . . . . 6.0 6.3 6.6V

  • Heater Current e 150 mA

    150 mA

    Heater Current e 150 mA

  • Output . . . . . . . . . . L. 2.2 0.8 uuf T3

    0.8 pF

    Output . . . . . . . . . . L. 2.2 0.8 uuf T3

  • Plate Dissipation . . . e 3.3 W

    3.3 W

    Plate Dissipation . . . e 3.3 W

  • the beater voltage to its center rated value of 6.3 volts.

    6.3 V

    the beater voltage to its center rated value of 6.3 volts.

  • Plate Voltage . . . . . . . . . . . . 100Vd Cathode Resistor MIL-E-1 Par. 3.2.2.1 270 Ohms

    270 Ohms

    Plate Voltage . . . . . . . . . . . . 100Vd Cathode Resistor MIL-E-1 Par. 3.2.2.1 270 Ohms

  • 4.10.8 Heater Current:. .. .. Q.65 140 — — — 160 mA

    160 mA

    4.10.8 Heater Current:. .. .. Q.65 140 — — — 160 mA

  • Heater Current.. ...t it — 2 5 138 164 mA

    164 mA

    Heater Current.. ...t it — 2 5 138 164 mA

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Input Capacitance

    2 pF

  • Output Capacitance

    2.2 pF

  • Grid-to-Plate Capacitance

    1.3 pF

Other

  • Plate Voltage

    100 V

    ClassA

  • Cathode Resistor

    270 ohm

    ClassA

  • Plate Current

    10 mA

    ClassA

Data set 03

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Grid-to-plate capacitance

    1.3 pF

    WholeTube

  • Input capacitance

    2 pF

    WholeTube

  • Output capacitance

    0.8 pF

    WholeTube

Other

  • Maximum plate voltage

    190 V

    WholeTube

  • Maximum plate dissipation

    3.3 W

    WholeTube

  • Maximum plate current

    22 mA

    WholeTube

  • Maximum peak grid current

    4.4 mA

    WholeTube

  • Maximum heater-cathode voltage

    200 V

    WholeTube

  • Plate voltage

    100 V

    ClassA

  • Cathode resistor

    270 ohm

    ClassA

  • Plate current

    10 mA

    ClassA

  • Amplification factor

    16

    ClassA

  • Plate resistance

    4100 ohm

    ClassA

  • Transconductance

    4500 uS

    ClassA