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

SRS502

High-power RFT transmitting pentode capable of roughly 1.1 kW Class C RF output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 8.5 A

Description

SRS502 is a radiation-cooled transmitting pentode intended for communications, industrial RF generators. The source publishes heater data, static characteristics, operating examples, limiting ratings, capacitances, and mechanical or cooling requirements as applicable.

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
12.6 V
Nominal heater current
8.5 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
Transconductance
0.005 S
Max plate voltage
3000 V
Max screen voltage
600 V
Max plate dissipation
450 W
Max screen dissipation
100 W
Max grid dissipation
10 W
Max cathode current
600 mA

Promoted ratings/characteristics are source-published values; additional published values and operating examples are preserved in the parameter table.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    12.6 V

    Nominal

  • HeaterCurrentNominal

    8.5 A

    Nominal

  • Maximum Plate Voltage

    3000 V

  • Maximum Screen Voltage

    600 V

  • Maximum Plate Dissipation

    450 W

  • Maximum Screen Dissipation

    100 W

  • MaximumGridDissipation

    10 W

  • Maximum Cathode Current

    600 mA

  • Maximum Frequency

    40 MHz

  • RFOutputPower

    1100 W

    ClassC; <=3 MHz

Characteristic

  • Transconductance

    5000 µS

    Typical