1L33

Fixed vacuum capacitor documented for high-voltage RF oscillator, amplifier, neutralizing, coupling, and padding applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B7G
Base pins: -
Nominal heater: 1.4 V / 50 mA

Description

General Electric vacuum capacitor for high-voltage RF oscillator, amplifier, neutralizing, coupling, or padding service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B7G
Base pins: -
Nominal heater voltage: 1.4 V
Nominal heater current: 50 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

Capacitor

X-ray radiationInterelectrode capacitances

Transconductance: 0.0014 S
Max plate voltage: 90 V
Max screen voltage: 67.5 V
Max plate dissipation: 0.7 W
Max screen dissipation: 0.2 W
Max cathode current: 12 mA

Published ratings and characteristics promoted from the source where directly stated.

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

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Capacitor

Construction

Component type
Vacuum capacitor

Application

Application
High-voltage RF capacitor

Data set 02

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Capacitor

Characteristics

Heater or filament voltage
1.4 V
Published nominal value
Heater or filament current
50 mA
Published nominal value
Transconductance
1.25 mA/V
Typical value

Other

Output power
230 mW
ClassA; 90 V plate operation

Data set 03

1969 Tesla Manual of Electronic Tubes

Published operating points and test conditions from this source.

SECTION 1

Capacitor

Other

Power Output
230 mW
ClassA;OneTube
Power Output
325 mW
ClassB;PushPull;TwoTubes