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PEN45

Beam-power audio-output valve designed for receiver power stages, providing useful low-frequency output with substantial plate dissipation for its receiving-tube class.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: IO
Base pins: 8
Nominal heater: 4 V / 1.75 A

Description

Indirectly heated beam-power amplifier for AC-mains receiver output stages.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: IO
Base pins: 8
Nominal heater voltage: 4 V
Nominal heater current: 1.75 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.009 S
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 10 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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Typical Plate Voltage
250 V
Typical Screen Voltage
250 V
Typical Plate Current
40 mA

Capacitance

Anode Earth Capacitance
12.25 pF
Grid Earth Capacitance
22.75 pF
Anode Grid Capacitance
0.85 pF