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SV57230

Svetlana medium-mu 572-family power triode for audio and linear power amplification. With about 1 kV plate capability and 125 W dissipation, it balances useful voltage gain with substantial output capability.

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 envelope

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: 4600 Ω
Transconductance: 0.0065 S
Amplification factor: 29.5
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 a triode such as
-
SourcePage1-2
Voltage (AC or DC) 6.3 ±
0.3 V
SourcePage1-2
Current
4 A
SourcePage1-2
Plate resistance (nominal)
4600 ohms
SourcePage1-2
Grid to plate
8 pF
SourcePage1-2
Grid to filament
7 pF
SourcePage1-2

Other

DC plate voltage
1000 V
SourcePage1-2
Maximum-signal DC plate current
210 mA
SourcePage1-2
Plate Dissipation
125 W
SourcePage1-2
Grid Current
50 mA
SourcePage1-2
Grid voltage +5
0 V
TypicalOperation
DC Plate current, zero signal 60
100 mA
TypicalOperation
DC Plate current, max signal 80
150 mA
TypicalOperation
Plate load resistance 10,000
10000 ohms
TypicalOperation
Power output at distortion above 9
29 W
TypicalOperation
DC Plate voltage
1000 V
TypicalOperation
Grid voltage
-10 V
TypicalOperation
DC Plate current, zero signal
150 mA
TypicalOperation
DC Plate current, max signal
230 mA
TypicalOperation
Plate load resistance
9600 ohms
TypicalOperation
Power output at distortion above
78 W
TypicalOperation
Vg =
80 v
TypicalOperation
Vg =
0 v
TypicalOperation
Vg =
20 v
TypicalOperation