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

Power - Triode ·Triode

4624

Power triode documented for amplifier or control service, with manufacturer operating data emphasizing useful power output rather than small-signal voltage amplification. Its available documentation does not justify a narrower specialized functional category.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

High-voltage directly heated output triode for Class-A, B, and AB service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
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
Plate resistance
3000 Ω
Transconductance
0.0023 S
Amplification factor
12
Max plate dissipation
400 W
Max cathode current
375 mA

Published maximum ratings/general electrical characteristics promoted directly; pulse, RF, capacitance, cooling, and service-specific values retained in TUBE_SECTION_PARAMETER.

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

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

  • Application

    Audio output

Other

  • Class-AB operation

    Published

    ClassAB

Data set 02

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    2200 V

    PromotedValue

  • Maximum screen-grid voltage

    400 V

    PromotedValue

  • Maximum plate dissipation

    400 W

    PromotedValue

  • Maximum cathode/plate current

    375 mA

    PromotedValue

  • Grid No.1 to plate — published value 1

    0 mA

    Published datasheet value

  • Grid No.1 to plate — published value 2

    62 mA

    Published datasheet value

  • Plate to cathode

    6.2 mA

    Published datasheet value

  • Grid No.2 to cathode

    590 mA

    Published datasheet value

  • Plate-Core Temperature

    250 mA

    Published datasheet value

  • 7tie maximum rating for a signal having a minimum peak-to-average power

    7 mA

    Published datasheet value

Characteristics

  • Mu / amplification factor

    12

    PromotedValue

  • Heater/filament voltage

    6.3 V

    Nominal operating value

  • Heater/filament current

    3.5 A

    Nominal operating value

  • INTEGRAL RADIATOR — published value 1

    300 W

    Published datasheet value

  • INTEGRAL RADIATOR — published value 2

    890 W

    Published datasheet value

  • MATRIX-TYPE CATHODE — published value 1

    410 W

    Published datasheet value

  • MATRIX-TYPE CATHODE — published value 2

    30 W

    Published datasheet value

  • Voltage (AC or DC)

    6.3 V

    Published datasheet value

  • Current at heater volts = 6.3 — published value 1

    6.3 A

    Published datasheet value

  • Current at heater volts = 6.3 — published value 2

    3.5 A

    Published datasheet value

  • Minimum heating time

    60

    Published datasheet value

  • plate volts = 450, grid-No.2 volts =

    450 V

    Published datasheet value

  • 325 and plate amperes = 1.2 — published value 1

    325 A

    Published datasheet value

  • 325 and plate amperes = 1.2 — published value 2

    1.2 A

    Published datasheet value

  • 325 and plate amperes = 1.2 — published value 3

    12 A

    Published datasheet value

  • Grid No.1 to cathode

    20 pF

    Published datasheet value

  • Grid No.1 to grid No.2

    19 pF

    Published datasheet value

  • Grid No.2 to plate

    2.2 pF

    Published datasheet value

  • G2 -Grid-No. 2

    2

    Published datasheet value

  • ator core temperature to 250° C should be del ivered by a

    250

    Published datasheet value

  • DC Plate Voltage

    2200 V

    Published datasheet value

  • DC Grid-No.2 Voltage

    400 V

    Published datasheet value

  • DC Plate Current

    375 mA

    Published datasheet value

  • DC Grid-No.1 Current

    100 mA

    Published datasheet value

  • Grid-No.2 Input

    8 W

    Published datasheet value

  • Plate Dissipation

    400 W

    Published datasheet value

  • For frequency o} 8qo Mc and Bandwidth a} 8.g Mc — published value 1

    8 MHz

    Published datasheet value

  • For frequency o} 8qo Mc and Bandwidth a} 8.g Mc — published value 2

    8 MHz

    Published datasheet value

  • DC Plate Voltage

    2000 V

    Published datasheet value

  • DC Grid-No.1 Voltage

    -55 V

    Published datasheet value

  • Output Circuit Efficiency

    80

    Published datasheet value

  • DC Grid-No.l Voltage

    -100 V

    Published datasheet value

  • DC Plate Current at Peak of Envelope

    450 mA

    Published datasheet value

  • Grid-No.1 Circuit Resistance

    30000 ohm

    Published datasheet value

  • DC Grid-No.i Voltage

    -44 V

    Published datasheet value

  • Zero-Signal DC Plate Current

    100 mA

    Published datasheet value

  • Effective RF Load Resistance

    3200 ohm

    Published datasheet value

  • DC Plate Current at Peak of Envelope

    335 mA

    Published datasheet value

  • Average DC Plate Current

    250 mA

    Published datasheet value

  • DC Grid-No.2CurrentatPeakot Envelope

    20 mA

    Published datasheet value

  • Average DC Grid-No.2 Current

    13 mA

    Published datasheet value

  • DC Grid-No.1 Current

    0 mA

    Published datasheet value

  • Peak-of-Envelope Driver Power Output (Approx.)

    0.3 W

    Published datasheet value

  • Output-Circuit Efficiency (Approx.)

    92

    Published datasheet value

  • Icl Cathode-heater cyl inder terminal ( IDI-0.400

    0.4

    Published datasheet value

  • (d) Cathode-heater cyl inder terminal IODI-0,525

    525

    Published datasheet value

  • Ib) Heater pin-0.0830 (. 123 Dia x 82° CSK. 1 — published value 1

    0.083

    Published datasheet value

  • Ib) Heater pin-0.0830 (. 123 Dia x 82° CSK. 1 — published value 2

    123

    Published datasheet value

  • Ib) Heater pin-0.0830 (. 123 Dia x 82° CSK. 1 — published value 3

    82

    Published datasheet value

  • Ib) Heater pin-0.0830 (. 123 Dia x 82° CSK. 1 — published value 4

    1

    Published datasheet value

  • INCOMING AIR TEMPERATURE-24°C

    24 degC

    Published datasheet value

  • HEATER VOLTS=6.3

    6.3 V

    Published datasheet value

  • GRID No.2 VOLTS =400

    400 V

    Published datasheet value

  • GRID No.2 VOLTS=400

    400 V

    Published datasheet value

Data set 03

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    800 V

    ClassA

  • Grid voltage

    -90 V

    ClassA

  • Plate current

    35 mA

    ClassA

  • Load resistance

    11 kohm

    ClassA

  • Output power

    9 W

    ClassA

Characteristics

  • Transconductance

    2.3 mA/V

  • Plate resistance

    3 kohm