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8552

High-power-sensitivity beam-power transmitting tube for RF power amplification, oscillator, audio power-amplifier, and modulator service; co-designated with 8032A.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 8
Nominal heater: 12.6 V / 562 mA

Description

8552 is an explicit co-designation of 8032A. High-power-sensitivity beam-power transmitting tube for RF power amplifier, oscillator, AF power amplifier, and modulator service. The supplied RCA sheet was used for published ratings, characteristics, operating conditions, and capacitances where present.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: 8
Nominal heater voltage: 12.6 V
Nominal heater current: 562 mA
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: 0.007 S
Amplification factor: 4.5
Max plate voltage: 750 V
Max screen voltage: 250 V
Max plate dissipation: 35 W
Max screen dissipation: 3 W
Max cathode current: 150 mA

Beam-power tube; supplied sheet is electrically the same as 6146B/8298A except listed heater/capacitance items. Operating values are retained in parameters; unsupported absolute maxima were not invented.

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

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater/filament voltage
12.6 V
Heater/filament current
562 mA
Heater voltage design center
12.6 V
Heater current minimum
525 mA
Heater current maximum
600 mA
Minimum heating time
60 s
Plate voltage
600 V
SelfExcitedOscillator;15MHz
Screen voltage
200 V
SelfExcitedOscillator;15MHz
Plate current maximum
150 mA
SelfExcitedOscillator;15MHz
Useful power output minimum
59 W
StationaryEquipment
Reduced-heater output retention
90 %
Heater10V

Capacitance

Grid No.1-to-plate capacitance
0.24 pF
Maximum