4621

RCA high-power beam-power transmitting tube for RF, pulse, modulation, and related transmitter service, with 125-watt maximum plate dissipation and application-specific operating limits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 3.2 A

Description

High-power beam power tube for RF, pulse, modulation, or transmitting service. The RCA source was reviewed for heater/filament data, maximum ratings, RF and pulse operating conditions, capacitances, cooling requirements, and application-specific limits.

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: 6.3 V
Nominal heater current: 3.2 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

Max plate voltage: 4000 V
Max screen voltage: 1000 V
Max plate dissipation: 125 W
Max cathode current: 50 mA

Published maximum ratings/general electrical characteristics promoted directly; pulse, RF, capacitance, cooling, and service-specific values retained in TUBE_SECTION_PARAMETER.

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 plate voltage
4000 V
PromotedValue
Maximum screen-grid voltage
1000 V
PromotedValue
Maximum plate dissipation
125 W
PromotedValue
Maximum cathode/plate current
50 mA
PromotedValue
Seal Temperature
250 mA
Published datasheet value

Characteristics

Heater/filament voltage
6.3 V
Nominal operating value
Heater/filament current
3.2 A
Nominal operating value
CERMOLOX
17000 W
Pulse
Matrix Cathode
1215 MHz
Published datasheet value
Voltage (ac or dc)
6.3 V
Published datasheet value
Current at 6.3 V — published value 1
6.3
Published datasheet value
Current at 6.3 V — published value 2
3.2
Published datasheet value
,,,^
60
Published datasheet value
Peak Positive-Pulse Plate Voltage
7000 V
Pulse
DC Plate Voltage
4000 V
Published datasheet value
Grid-No. 2 Voltage — published value 1
2 V
Published datasheet value
Grid-No. 2 Voltage — published value 2
1000 V
Published datasheet value
Negative Pulse Grid-No. 1 Voltage — published value 1
1 V
Pulse
Negative Pulse Grid-No. 1 Voltage — published value 2
200 V
Pulse
Plate Dissipation (Average)
125
Published datasheet value