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45A5

Power-amplifier pentode designed for audio-frequency output service. Philips documentation provides ratings, characteristics, and operating data for low-frequency load-driving applications.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

Power amplifier pentode for audio-frequency output service. Published ratings, characteristics, and operating data were read from the supplied source.

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: -
Nominal heater current: -
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

Plate resistance: 24000 Ω
Transconductance: 0.0082 S
Max plate voltage: 250 V
Max screen voltage: 250 V
Max screen dissipation: 4 W
Max cathode current: 75 mA

Published electrical data extracted from supplied datasheet.

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 0-D

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

Plate voltage
200 V
Screen voltage
200 V
Plate current
45 mA
Grid 1 voltage
-14.2 V
Transconductance
8200 uS
Plate resistance
24000 ohm

Other

Typical load resistance
4300 ohm
ClassA
Typical screen current
8.5 mA
ClassA