5CX1500B

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 38.5 A

Description

The Svetlana 5CX1500B is a high-performance ceramic/metal power pentode designed for use as a highly linear Class AB 1 linear amplifier. The pentode is ideal for VHF service and is recommended for use in FM broadcast transmitters. The 5CX1500B filament is precision fabri- cated in a cylindrical mesh configuration for exceptional mechanical stability and long life. The Svetlana 5CX1500B is manufactured in the Svetlana factory in St. Petersburg, Russia, and is designed to be a direct replacement for both the 5CX1500B and 5CX1500A manufactured in the United States.

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: 5 V
Nominal heater current: 38.5 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

Pentode

X-ray radiationInterelectrode capacitances

Max plate voltage: 5000 V
Max screen voltage: 750 V
Max plate dissipation: 1500 W
Max screen dissipation: 75 W
Max grid dissipation: 25 W

Maximum ratings promoted from source.

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

199X Svetlana

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HeaterVoltageNominal
5 V
Nominal
HeaterCurrentNominal
38.5 A
Nominal
Maximum Plate Voltage
5000 V
Maximum Screen Voltage
750 V
Maximum Plate Dissipation
1500 W
Maximum Screen Dissipation
75 W