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Power - Beam (NOT sweep) ·BeamPower

8950

High-current beam pentode for linear and RF power applications, combining approximately 16 mA/V transconductance with 33 W plate dissipation and substantial pulse capability.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
E12-74
Socket code
B12C
Base pins
12
Nominal heater
13 V / 1.1 A

Description

High-current beam pentode for linear-amplifier and RF power applications.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
E12-74
Socket code
B12C
Base pins
12
Nominal heater voltage
13 V
Nominal heater current
1.1 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

E12-74 - 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

Beam Power

X-ray radiationInterelectrode capacitances
Transconductance
0.016 S
Max plate voltage
800 V
Max screen voltage
250 V
Max plate dissipation
33 W
Max screen dissipation
5 W
Max cathode current
400 mA
Rectifier max heater-cathode voltage
200 V

Beam pentode; peak pulse plate/cathode values retained separately 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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • HeaterOrFilamentVoltageNominal

    13 V

  • HeaterOrFilamentCurrentNominal

    1.1 A

  • Maximum Plate Voltage

    800 V

  • MaximumPeakPositivePulsePlateVoltage

    6500 V

    Pulse

  • Maximum Screen Voltage

    250 V

  • Maximum Plate Dissipation

    33 W

  • Maximum Screen Dissipation

    5 W

  • Maximum DC Cathode Current

    400 mA

  • Maximum Peak Cathode Current

    1400 mA

    Pulse

Characteristic

  • Transconductance

    16000 uS