8576

Forced-air-cooled ceramic-metal radial-beam power pentode, co-designated 264/8576, designed for broadband Class-AB linear amplification with approximately 3 kW plate dissipation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 7
Nominal heater: 6 V / 17 A

Description

The EIMAC 8576 is the co-designated 264/8576 ceramic/metal forced-air-cooled radial-beam pentode, rated for 3000 W plate dissipation and broad-band Class-AB linear-amplifier service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 7
Nominal heater voltage: 6 V
Nominal heater current: 17 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

Transconductance: 0.037 S
Max plate voltage: 5000 V
Max screen voltage: 1000 V
Max plate dissipation: 3000 W
Max screen dissipation: 50 W
Max grid dissipation: 2 W

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Maximum DC Suppressor Voltage
100 V
Maximum DC Grid Voltage
-260 V
Maximum DC Plate Current
2 A
Useful Output Power
5500 W
ClassAB1; GridDriven; 5000V Plate

Characteristic

Frequency for Maximum Ratings
30 MHz

Capacitance

Input Capacitance
55 pF
Output Capacitance
18 pF
Feedback Capacitance
0.13 pF