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Power - Pentode (NOT beam) ·Pentode

5C101A

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
LARGE5
Base pins
5
Nominal heater
10 V / 5.4 A

Description

Directly heated RF power pentode.

Socket description

Large American 5-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
LARGE5
Base pins
5
Nominal heater voltage
10 V
Nominal heater current
5.4 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
2000 V
Max screen voltage
400 V
Max plate dissipation
100 W
Max screen dissipation
35 W

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Interelectrode capacitances published

    1

    See source table for individual capacitances

Data set 02

1947 Standard Valves

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum frequency at full ratings

    30 MHz

  • RF power output

    70 W

    ClassC