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

Rectifier - Half Wave ·Rectifier

DA8300

Philips directly heated high-vacuum rectifier for high-voltage DC supplies. Its 9 V filament supports approximately 4–8 kV RMS anode service and 40 mA mean rectified current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
9 V / 5.8 A

Description

Philips DA8300 is a directly heated high-vacuum rectifier with a 9 V, 5.8 A filament. Published service covers 4000–8000 V RMS anode voltage and 40 mA mean rectified current, with 150 W allowable anode dissipation.

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
9 V
Nominal heater current
5.8 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

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Plate resistance
2500 Ω
Max plate dissipation
150 W
Rectifier nominal output current
40 mA

Published ratings and characteristics promoted where a locked-schema field is semantically applicable; additional values retained as 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

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Saturation current

    180 mA

    Published datasheet value

  • Saturation voltage

    500 V

    Published datasheet value

  • Internal resistance

    2500 Ω

    Published datasheet value

Other

  • Anode dissipation

    - to 150 W

    Published datasheet value

  • Anode dissipation test value

    200 W

    Published test value

  • RMS anode A.C. voltage range

    4000 to 8000 V

    Published datasheet value

  • D.C. output voltage range

    4000 to 8000 V

    Published datasheet value

  • Mean rectified D.C. current

    - to 40 mA

    Published datasheet value

  • Useful D.C. output power

    320 W

    Published datasheet value