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Power - Pentode (NOT beam) ·Pentode

P502

Power-capable pentode documented for amplification, transmitting, pulse, or deflection service. Manufacturer ratings support demanding output applications rather than ordinary small-signal amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 750 mA

Description

A pentode intended for amplification, transmitting, pulse, or deflection service, with published heater, operating, and limiting data.

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
750 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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.0035 S
Max plate voltage
1000 V
Max screen voltage
300 V
Max plate dissipation
40 W
Max screen dissipation
5 W
Max grid dissipation
1 W
Max cathode current
230 mA

Published ratings and characteristics promoted where unambiguous; additional source values preserved as parameters.

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

    750 mA

    Nominal

  • Maximum Plate Voltage

    1000 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    40 W

  • Maximum Screen Dissipation

    5 W

  • MaximumGridDissipation

    1 W

  • Maximum Cathode Current

    230 mA

Characteristic

  • Transconductance

    3500 µS

    Typical