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

5JI80E

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
-
Base pins
-
Nominal heater
10 V / 28 A

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
10 V
Nominal heater current
28 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
6000 V
Max screen voltage
1500 V
Max plate dissipation
3500 W

Air-blast-cooled RF power pentode.

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

1947 Standard Valves

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Peak emission

    12 A

Capacitance

  • Grid-to-anode capacitance

    0.6 pF

  • Input capacitance

    32 pF

  • Output capacitance

    21 pF

Other

  • Maximum direct anode current

    1.5 A

  • Maximum direct screen current

    250 mA

  • Maximum frequency

    25 MHz

  • Power output

    1.4 kW

    ClassB; 100% modulation

  • Power output

    3.8 kW

    ClassC; modulated

  • Power output

    5 kW

    ClassC; oscillator or unmodulated