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Triode - HV Shunt Regulator ·Triode

6BK4A

High-voltage triode designed for electronic voltage-regulator service, controlling or shunting current to stabilize demanding power supplies.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 200 mA

Description

High-voltage low-current beam triode for shunt-regulator service in color television receivers.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
200 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

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.0002 S
Amplification factor
2000
Max plate voltage
27000 V
Max plate dissipation
30 W
Max cathode current
1.6 mA

High-voltage shunt-regulator beam triode.

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

Other

  • Unregulated DC Supply Voltage Maximum

    60000 V

    ShuntVoltageRegulator

  • Regulated DC Output Voltage

    25000 V

    LoadCurrent=0mA

  • UnregulatedSupplyVoltageTypical

    36000 V

    ShuntVoltageRegulator

Data set 02

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • THE bBK

    4 A

    | THE bBK4A IS A SHARP CUT-OFF BEAM TRIODE FOR HIGH-VOLTAGE. LOW-CURRENT APPLI-

  • LIMITS OF APPLIED VOLTAGE - AC OR DC

    0.6 V

    Average Characteristics | LIMITS OF APPLIED VOLTAGE - AC OR DC 6.3 '- 0.6 VOLTS

  • HEATER NEGATIVE WITH RESPECT TO CATHODE

    200 V

    Average Characteristics | HEATER NEGATIVE WITH RESPECT TO CATHODE 200 VOLTS

Capacitance

  • GRID TO PLATE: G TO P

    0.03 pF

    Capacitances | GRID TO PLATE: G TO P 0.03 pf

  • GRID TO CATHODE AND HEATER: G TO (K+H)

    2.6 pF

    Capacitances | GRID TO CATHODE AND HEATER: G TO (K+H) 2.6 pf

  • PLATE TO CATHODE AND HEATER: P TO (K+H)

    1 pF

    Capacitances | PLATE TO CATHODE AND HEATER: P TO (K+H) 1.0 pf

Other

  • MAXIMUM DC PLATE VOLTAGE

    27 V

    Maximum Ratings | MAXIMUM DC PLATE VOLTAGE 27.000 VOLTS

  • MAXIMUM UNREGULATED DC SUPPLY VOLTAGE

    60 V

    Maximum Ratings | MAXIMUM UNREGULATED DC SUPPLY VOLTAGE 60.000 VOLT`.

  • MAXIMUM PLATE DISSIPATION

    30 W

    Maximum Ratings | MAXIMUM PLATE DISSIPATION 30 WATT`.

  • MAXIMUM DC PLATE CURRENT

    1.6 mA

    Maximum Ratings | MAXIMUM DC PLATE CURRENT 1.6 MA

  • DC VOLTAGE

    36 V

    Typical Operating Conditions | DC VOLTAGE 36.000 VOLTS

  • EQUIVALENT RESISTANCE

    11 Mohm

    Typical Operating Conditions | EQUIVALENT RESISTANCE 11 MEGOHMS

  • EQUIVALENT RESISTANCE OF SUPPLY

    1 ohm

    Typical Operating Conditions | EQUIVALENT RESISTANCE OF SUPPLY 1.000 OHMS

  • FOR LOAD CURRENT OF

    1 mA

    Typical Operating Conditions | FOR LOAD CURRENT OF 1 MA. 45 µAMP.

  • FOR LOAD CURRENT OF O MA

    25 V

    Typical Operating Conditions | FOR LOAD CURRENT OF O MA. 25.000 VOLTS

  • FOR LOAD CURRENT OF

    1 mA

    Typical Operating Conditions | FOR LOAD CURRENT OF 1 MA. 24.500 VOLT

  • FOR LOAD CURRENT OF

    24.5 V

    Typical Operating Conditions | FOR LOAD CURRENT OF 1 MA. 24.500 VOLT