8828

Beam-power transmitting tube designed for RF power service, providing substantial output capability for professional communications and industrial electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 26.5 V / 680 mA

Description

The 8828 is a UHF beam-power RF amplifier tube. The supplied datasheet provides heater or filament data, maximum ratings, operating conditions, RF output information, and interelectrode capacitances where applicable.

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: 9
Nominal heater voltage: 26.5 V
Nominal heater current: 680 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

Max plate voltage: 2200 V
Max screen voltage: 400 V
Max plate dissipation: 200 W
Max screen dissipation: 8 W
Max cathode current: 300 mA

Published ratings, characteristics, and operating data promoted 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

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Maximum DC Plate Voltage
2200 V
Up to 500 MHz
Maximum DC Screen Voltage
400 V
Up to 500 MHz
Maximum DC Control-Grid Voltage
-100 V
Up to 500 MHz
Maximum DC Plate Current
300 mA
Up to 500 MHz
Maximum DC Control-Grid Current
100 mA
Up to 500 MHz
Screen Dissipation
8 W
Up to 500 MHz
Plate Dissipation
200 W
Up to 500 MHz
Typical Plate Voltage
700 V
Grid-drive circuit at 50 MHz
Typical Screen Voltage
175 V
Grid-drive circuit at 50 MHz
Typical Plate Current
300 mA
Grid-drive circuit at 50 MHz
Typical Driver Power
1.2 W
Grid-drive circuit at 50 MHz
Typical Useful Power Output
100 W
Grid-drive circuit at 50 MHz

Characteristics

Mu Factor, Screen to Control Grid
12
Grid-No.1 to Plate Capacitance
0.15 pF
Grid-No.1 to Cathode Capacitance
16 pF
Plate to Cathode Capacitance
0.01 pF
Grid-No.1 to Screen Capacitance
23 pF
Screen to Plate Capacitance
7.2 pF
Screen to Cathode Capacitance
2.7 pF
Cathode to Heater Capacitance
3.3 pF
Minimum Heating Time
120 s