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Power - Beam (NOT sweep) ·BeamPower

35L31

150 mA series-heater beam-power tube designed for audio-frequency output stages in transformerless and other series-string receiver equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
35 V / 150 mA

Description

150 mA series-heater beam-power tube for audio-frequency output stages.

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
35 V
Nominal heater current
150 mA
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
0.0041 S
Max plate voltage
315 V
Max screen voltage
250 V
Max plate dissipation
12 W

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed where applicable.

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

1969 Tesla Manual of Electronic Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater voltage

    35 V

    Published nominal value

  • Heater current

    150 mA

    Published nominal value

  • Transconductance

    4100 µS

    Published operating characteristic

Other

  • Maximum plate dissipation

    12 W

    Published maximum rating