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

Power - Triode ·Triode

6263A

Pencil-type UHF power triode for RF amplifier and oscillator service. Its compact low-inductance construction, 13 W plate dissipation, and amplification factor around 40 suit high-frequency transmitting circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
-
Nominal heater
6 V / 280 mA

Description

Pencil-type UHF power triode for RF amplifier and oscillator service.

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
-
Nominal heater voltage
6 V
Nominal heater current
280 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
Plate resistance
6000 Ω
Transconductance
0.007 S
Amplification factor
40
Max plate voltage
400 V
Max plate dissipation
13 W
Max cathode current
70 mA

Representative electrical section from supplied RCA data sheet.

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

  • Heater voltage

    6 V

    Nominal

  • Heater current

    280 mA

    Nominal

  • Plate voltage

    200 V

    Published operating table; OperatingPoint1

  • Plate voltage

    33 V

    Published operating table; OperatingPoint1

  • Plate voltage

    400 V

    Published operating table; OperatingPoint2

  • Plate voltage

    275 V

    Published operating table; OperatingPoint1

  • Plate voltage

    330 V

    Published operating table; OperatingPoint2

  • Frequency for full ratings

    500 MHz

  • Maximum reduced-rating frequency

    1700 MHz

  • Altitude for full ratings

    60000 ft

Characteristic

  • Plate current

    27 mA

    Published operating table; OperatingPoint1

  • Plate current

    35 mA

    Published operating table; OperatingPoint1

  • Plate current

    40 mA

    Published operating table; OperatingPoint2

  • Plate current

    33 mA

    Published operating table; OperatingPoint1

  • Plate current

    46 mA

    Published operating table; OperatingPoint2

  • Plate current

    35 mA

    Published operating table; OperatingPoint1

  • Plate current

    35 mA

    Published operating table; OperatingPoint2

  • Transconductance

    7000 uS

    Published operating table; OperatingPoint1

Data set 02

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater/filament voltage

    6 V

  • Heater/filament current

    280 mA

Application

  • Application summary

    Pencil-type UHF power triode for RF amplifier and oscillator service.

Characteristic

  • Plate voltage

    200 V

  • Plate current

    18.5 mA

  • Transconductance

    6800 uS

  • Amplification factor

    40

  • Full-ratings frequency

    500 MHz

  • Reduced-ratings frequency

    1700 MHz

  • RF output ICAS at 500 MHz

    10 W

Data set 03

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater/filament voltage nominal

    6 V

    WholeTube

  • Heater/filament current

    280 mA

    WholeTube

  • Current at

    6 V

    Published source row

  • Current at (value 2)

    0 V

    Published source row

  • Current at (value 3)

    280 V

    Published source row

  • Transconductance, for do plate ma. =

    27 mA

    Published source row

  • DC PLATE VOLTAGE

    330 V

    Published source row

  • DC PLATE VOLTAGE (value 2)

    400 V

    Published source row

  • DC GRID VOLTAGE

    -100 V

    Published source row

  • DC GRID VOLTAGE (value 2)

    -100 V

    Published source row

  • DC PLATE CURRENT

    40 mA

    Published source row

  • DC PLATE CURRENT (value 2)

    55 mA

    Published source row

  • DC GRID CURRENT

    25 mA

    Published source row

  • DC GRID CURRENT (value 2)

    25 mA

    Published source row

  • CC CATHODE CURRENT

    55 mA

    Published source row

  • CC CATHODE CURRENT (value 2)

    70 mA

    Published source row

  • PLATE INPUT

    13.2 W

    Published source row

  • PLATE INPUT (value 2)

    22 W

    Published source row

  • PLATE DISSIPATION

    8 W

    Published source row

  • PLATE DISSIPATION (value 2)

    13 W

    Published source row

  • DC Plate-to-Grid Voltage

    330 V

    Published source row

  • DC Plate-to-Grid Voltage (value 2)

    385 V

    Published source row

  • DC Cathode-to-Grid Voltage9

    30 V

    Published source row

  • DC Cathode-to-Grid Voltage9 (value 2)

    35 V

    Published source row

  • DC Plate Current

    35 mA

    Published source row

  • DC Plate Current (value 2)

    40 mA

    Published source row

  • DC Grid Current (Approx.)

    11 mA

    Published source row

  • DC Grid Current (Approx.) (value 2)

    14 mA

    Published source row

  • Useful Power Output (Approx.)

    5 W

    Published source row

  • Useful Power Output (Approx.) (value 2)

    7 W

    Published source row

  • DC Plate-to-Grid Voltage

    270 V

    Published source row

  • DC Cathode-to-Grid Voltage9

    20 V

    Published source row

  • DC Plate Current

    40 mA

    Published source row

  • DC Grid Current (Approx.)

    9 mA

    Published source row

  • Useful Power Output (Approx.)

    0.9 W

    Published source row

  • DC Plate-to-Grid Voltage

    348 V

    Published source row

  • DC Plate-to-Grid Voltage (value 2)

    408 V

    Published source row

  • DC Cathode-to-Grid Voltage9

    48 V

    Published source row

  • DC Cathode-to-Grid Voltage9 (value 2)

    58 V

    Published source row

  • DC Plate Current

    35 mA

    Published source row

  • DC Plate Current (value 2)

    40 mA

    Published source row

  • DC Grid Current (Approx.)

    13 mA

    Published source row

  • DC Grid Current (Approx.) (value 2)

    15 mA

    Published source row

  • Driver Power Output (Approx.)

    2.2 W

    Published source row

  • Driver Power Output (Approx.) (value 2)

    3 W

    Published source row

  • Useful Power Output (Approx.)

    7 W

    Published source row

  • Useful Power Output (Approx.) (value 2)

    10 W

    Published source row

  • Grid-Circuit Resistance

    0.1 Mohm

    Published source row

  • Grid-Circuit Resistance (value 2)

    0.1 Mohm

    Published source row

  • DC PLATE VOLTAGE

    275 V

    Published source row

  • DC PLATE VOLTAGE (value 2)

    330 V

    Published source row

  • DC GRID VOLTAGE

    -100 V

    Published source row

  • DC GRID VOLTAGE (value 2)

    -100 V

    Published source row

  • DC PLATE CURRENT

    33 mA

    Published source row

  • DC PLATE CURRENT (value 2)

    46 mA

    Published source row

  • OC GRID CURRENT

    25 mA

    Published source row

  • OC GRID CURRENT (value 2)

    25 mA

    Published source row

  • DC CATHODE CURRENT

    50 mA

    Published source row

  • DC CATHODE CURRENT (value 2)

    60 mA

    Published source row

  • PLATE INPUT

    9 W

    Published source row

  • PLATE INPUT (value 2)

    15 W

    Published source row

  • PLATE DISSIPATION

    5.5 W

    Published source row

  • PLATE DISSIPATION (value 2)

    9 W

    Published source row

  • DC Plate-to-Grid Voltage

    317 V

    Published source row

  • DC Plate-to-Grid Voltage (value 2)

    372 V

    Published source row

  • DC Cathode-to-Grid Voltages

    42 V

    Published source row

  • DC Cathode-to-Grid Voltages (value 2)

    52 V

    Published source row

  • DC Plate Current

    35 mA

    Published source row

Characteristic

  • Socket for Heater Pins. .Grayhill No

    22

    Published source row

  • Socket for Heater Pins. .Grayhill No (value 2)

    -3

    Published source row

  • Socket for Heater Pins. .Grayhill No (value 3)

    54

    Published source row

  • Socket for Heater Pins. .Grayhill No (value 4)

    6325

    Published source row