SRS455

Radiation-cooled transmitting triode designed particularly for audio-frequency amplification. Rated for approximately 125 W plate dissipation and 3 kV plate voltage, while published ratings also permit high-frequency operation to roughly 200 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 6.5 A

Description

SRS455 is a radiation-cooled transmitting triode intended for audio-frequency amplification. The source publishes heater data, static characteristics, operating examples, limiting ratings, capacitances, and mechanical or cooling requirements as applicable.

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: 6.5 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

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0022 S
Max plate voltage: 3000 V
Max plate dissipation: 125 W
Max grid dissipation: 4 W
Max cathode current: 350 mA

Promoted ratings/characteristics are source-published values; additional published values and operating examples are preserved in the parameter table.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
5 V
Nominal
HeaterCurrentNominal
6.5 A
Nominal
Maximum Plate Voltage
3000 V
Maximum Plate Dissipation
125 W
MaximumGridDissipation
4 W
Maximum Cathode Current
350 mA
Maximum Frequency
200 MHz

Characteristic

Transconductance
2200 µS
Typical