PC31000

Directly heated oxide-filament transmitting pentode designed for high-power RF amplifier service. Its construction and ratings support substantial professional transmitter output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 12 V / 4 A

Description

Directly heated oxide-filament transmitting pentode for high-power RF amplifier service. The supplied Philips source was read for heater/filament data, ratings, characteristics, RF/television operating conditions, and capacitances where published.

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 V
Nominal heater current: 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: 0.006 S
Amplification factor: 4.5
Max plate voltage: 3000 V
Max screen voltage: 1000 V
Max plate dissipation: 600 W
Max screen dissipation: 100 W
Max cathode current: 700 mA

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

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Maximum plate voltage
3000 V
Maximum screen voltage
1000 V
Maximum plate dissipation
600 W
Maximum screen dissipation
100 W
Maximum cathode current
700 mA
Operating plate voltage
3000 V
ClassC;RFAmplifier
Operating screen voltage
600 V
ClassC;RFAmplifier
Operating plate current
350 mA
ClassC;RFAmplifier
RF output power
1100 W
ClassC;RFAmplifier
Efficiency
63 %
ClassC;RFAmplifier

Characteristics

Transconductance
6000 uS
Screen-grid amplification factor
4.5

Capacitance

Plate-cathode capacitance
20 pF
Grid-cathode capacitance
45 pF
Plate-grid capacitance
0.05 pF