Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Beam (NOT sweep) ·BeamPower-BeamPower

1P33S

No short description is recorded for this tube.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
1.6 V / 1.8 A

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
1.6 V
Nominal heater current
1.8 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

2 physical sections, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Transconductance
0.005 S
Max plate dissipation
18 W

Section 2

Beam Power

X-ray radiationInterelectrode capacitances
Transconductance
0.005 S
Max plate dissipation
18 W

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

2026 Russian Receiving

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Screen Voltage

    250 V

  • Grid Voltage

    -10.5 V

  • Plate Voltage

    300 V

SECTION 2

Beam Power

Other

  • Screen Voltage

    250 V

  • Grid Voltage

    -10.5 V