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SV572160

High-mu Svetlana 572-family power triode for high-gain linear and audio power stages. With about 1 kV plate capability, 125 W dissipation, and amplification factor around 160, it combines strong gain with substantial power handling.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: UX4
Base pins: 4
Nominal heater: 6.3 V / 4 A

Description

Power triode, medium 4-pin base. Thoriated-tungsten filament, hard glass

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: UX4
Base pins: 4
Nominal heater voltage: 6.3 V
Nominal heater current: 4 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

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 17000 Ω
Transconductance: 0.009 S
Amplification factor: 160
Max plate voltage: 1000 V
Max plate dissipation: 125 W
Max grid dissipation: 50 W
Max cathode current: 210 mA

Published ratings/characteristics promoted where unambiguous.

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

Triode

Characteristic

applications where triodes of the
811 A
SourcePage1-2
Voltage (AC or DC) 6.3 ±
0.3 V
SourcePage1-2
Current
4 A
SourcePage1-2
Plate resistance (nominal) 17
-
SourcePage1-2
Grid to plate
8 pF
SourcePage1-2
Grid to filament
7 pF
SourcePage1-2

Other

Maximum-signal DC plate current
210 mA
SourcePage1-2
Plate Dissipation
125 W
SourcePage1-2
Grid Current
50 mA
SourcePage1-2
DC Plate voltage
1000 V
TypicalOperation
Grid voltage
5 V
TypicalOperation
DC Plate current, zero signal
50 mA
TypicalOperation
DC Plate current, max signal
70 mA
TypicalOperation
Plate load resistance
10000 ohms
TypicalOperation
Power output at distortion above
15.3 W
TypicalOperation
DC Plate current, max signal
85 mA
TypicalOperation
Plate load resistance
9600 ohms
TypicalOperation
Power output at distortion above
32 W
TypicalOperation
Ef =
6.3 V
TypicalOperation