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Power - Pentode (NOT beam) (over 1000V 100W) ·Pentode

4636

Liquid-cooled high-power pentode for UHF television transmitting service, rated around 1 kW plate dissipation and approximately 300 W output at 890 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 3.5 A

Description

Indirectly heated pentode for preamplifier 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
6.3 V
Nominal heater current
3.5 A
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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
2200000 Ω
Transconductance
0.0023 S
Amplification factor
12
Max plate voltage
2200 V
Max screen voltage
400 V
Max plate dissipation
1000 W
Max screen dissipation
0.3 W
Max cathode current
600 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

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate voltage

    2200 V

    PromotedValue

  • Maximum screen-grid voltage

    400 V

    PromotedValue

  • Maximum plate dissipation

    1000 W

    PromotedValue

  • Maximum cathode/plate current

    600 mA

    PromotedValue

  • Terminal Temperature

    250 mA

    Published datasheet value

  • Cathode-Heater Flange

    125 mA

    Published datasheet value

  • Plate Seal Temperature

    250 mA

    Published datasheet value

  • DC Plate Current (Class A Service)

    600 mA

    ClassA

Characteristics

  • Mu / amplification factor

    12

    PromotedValue

  • Heater/filament voltage

    6.3 V

    Nominal operating value

  • Heater/filament current

    3.5 A

    Nominal operating value

  • Liquid Cooled

    410 W

    Published datasheet value

  • 300 Watts UHF TV Output at 890 MHz — published value 1

    300 W

    Published datasheet value

  • 300 Watts UHF TV Output at 890 MHz — published value 2

    890 W

    Published datasheet value

  • Voltage (ac or dc)

    6.3 V

    Published datasheet value

  • Current at 6.3 volts — published value 1

    6.3 V

    Published datasheet value

  • Current at 6.3 volts — published value 2

    3.5 V

    Published datasheet value

  • Minimum heating time

    60

    Published datasheet value

  • Mu-F actor, (grid No.2 to grid No.l)

    12

    Published datasheet value

  • DC Plate Voltage

    2200 V

    Published datasheet value

  • DC Grid No.2 Voltage

    400 V

    Published datasheet value

  • DC Grid No.l Voltage

    100 V

    Published datasheet value

  • Plate Dissipation

    1000

    Published datasheet value

  • 2 No.6-32 STUDS ) — published value 1

    2

    Published datasheet value

  • 2 No.6-32 STUDS ) — published value 2

    32

    Published datasheet value

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Screen voltage

    100 V

  • Plate current

    3 mA

  • Screen current

    1.2 mA

  • Transconductance

    2.3 mA/V

  • Plate resistance

    2.2 Mohm