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Power - Beam (NOT sweep) ·BeamPower

35A5LT

Long-life or controlled-heater variant of the 35A5 beam-power audio-output family, intended for series-string receiver power-amplifier service.

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

Description

Beam-power amplifier for single-tube Class-A audio-frequency output service with a 35 V, 0.15 A heater.

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
Plate resistance
14000 Ω
Transconductance
0.0058 S
Max plate voltage
110 V
Max screen voltage
110 V

Published ratings and characteristics promoted where clearly stated; remaining published values retained as section parameters.

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater or filament voltage

    35 V

    Published nominal value

  • Heater or filament current

    150 mA

    Published nominal value

  • Transconductance

    5800 µS

    Published representative/high operating value

  • Plate resistance

    14000 ohm

    Published representative/high operating value

Other

  • Audio power output

    1.5 W

    SingleTube; ClassA

  • Load resistance

    2500 ohm

    SingleTube; ClassA