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Tube Tinker — Electron Tube Database

Specialized tube type

Specialized - Ballast vacuum tubes

Specialized - Ballast records in Tube Tinker cover 364 tube designations, including 100 preserved original datasheets. Compare bases, sockets, heater requirements, construction, exact variations, and directional replacement options.

Search this type in the catalog →
Tube records
364
Original datasheets
100
Variation families
0
Tubes with alternatives
1

About Specialized - Ballast tubes

Apply this if the tube is described as a ballast tube.

Electrical range

Nominal heater voltage
1 V
Nominal heater current
0.07–0.74 A

Common specialized - ballast characteristics

These are the most frequently recorded attributes among tubes in this category.

Bases

  • 4T1
  • P301
  • P30X1
  • P30Y1

Sockets

  • B45
  • UX45
  • IO2
  • OCTAL72
  • B71
  • B7G1
  • GOLIATH1
  • OCTAL51

Constructions

  • Ballast54

Specialized - Ballast tube list

Page 7 of 8

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  • BK30D

    Specialized - Ballast

    BK30D specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • BK49C

    Specialized - Ballast

    BK49C specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • BK55B

    Specialized - Ballast

    BK55B specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • BKU126D

    Specialized - Ballast

    BKU126D specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • BL422

    Specialized - Ballast

    BL422 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • BL65

    Specialized - Ballast

    BL65 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • C10

    Ballast

    Hydrogen-filled 200 mA barretter for series heater strings, using an iron filament's positive temperature coefficient to stabilize current over supply-voltage variation.

    Base
    P30Y
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • C12

    Ballast

    Hydrogen-filled 200 mA barretter for series heater chains, automatically increasing resistance as voltage rises to maintain substantially constant current over selectable regulating ranges.

    Base
    P30
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • C3

    Ballast

    Hydrogen-filled current-regulator barretter for series heater strings, using an iron filament to compensate for supply-voltage fluctuations and stabilize receiver heater current.

    Base
    P30X
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • C376

    Ballast

    Current-regulating ballast device intended to stabilize series-connected heater or filament circuits against changes in applied supply voltage.

    Base
    Not recorded
    Socket
    UX4
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • C386

    Ballast

    Current-regulating ballast device for receiver heater or filament circuits, using temperature-dependent resistance to hold operating current substantially constant.

    Base
    Not recorded
    Socket
    UX4
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • CR125015

    Specialized - Ballast

    CR125015 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • CR3503

    Specialized - Ballast

    CR3503 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • CR435035

    Specialized - Ballast

    CR435035 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • CR60015

    Specialized - Ballast

    CR60015 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • CXR15C

    Specialized - Ballast

    CXR15C specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D15

    Ballast

    Ballast current regulator intended for series heater or filament circuits, providing automatic resistance variation to reduce the effect of changing supply voltage.

    Base
    Not recorded
    Socket
    IO
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D610

    Specialized - Ballast

    D610 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D6T7

    Specialized - Ballast

    D6T7 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D6TF10

    Specialized - Ballast

    D6TF10 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D6TF30

    Specialized - Ballast

    D6TF30 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D6TK7

    Specialized - Ballast

    D6TK7 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D720

    Specialized - Ballast

    D720 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • D7H20

    Specialized - Ballast

    D7H20 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • DM7349

    Specialized - Ballast

    DM7349 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • E157

    Specialized - Ballast

    E157 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • E55C

    Specialized - Ballast

    E55C specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • J438

    Specialized - Ballast

    J438 specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K23C

    Specialized - Ballast

    K23C specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K42A

    Specialized - Ballast

    K42A specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K42B

    Specialized - Ballast

    K42B specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K42C

    Specialized - Ballast

    K42C specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K42D

    Specialized - Ballast

    K42D specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K42DG

    Specialized - Ballast

    K42DG specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K42E

    Specialized - Ballast

    K42E specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K49A

    Specialized - Ballast

    K49A specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K49B

    Specialized - Ballast

    K49B specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K49C

    Specialized - Ballast

    K49C specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K49CB

    Ballast

    Battery-equipment ballast regulator designed to stabilize filament current in low-voltage receiver circuits and protect series-connected valve filaments from supply variation.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K49D

    Specialized - Ballast

    K49D specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K49E

    Specialized - Ballast

    K49E specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K55A

    Specialized - Ballast

    K55A specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K55B

    Specialized - Ballast

    K55B specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K55BG

    Specialized - Ballast

    K55BG specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K55C

    Specialized - Ballast

    K55C specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K55D

    Specialized - Ballast

    K55D specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K55H

    Specialized - Ballast

    K55H specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives
  • K67B

    Specialized - Ballast

    K67B specialized - ballast electronic tube specifications and datasheets.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
    SpecificationsAlternatives