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

Power - Triode (over 1000V 100W) ·Triode

YD1185

Forced-air-cooled high-power RF triode for industrial oscillator service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7 V / 175 A

Description

Forced-air-cooled high-power RF triode for industrial oscillator service. Published filament, capacitance, limiting-rating, and representative Class-C industrial oscillator data were extracted from the supplied Philips sheet.

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
7 V
Nominal heater current
175 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
1250 Ω
Transconductance
0.04 S
Amplification factor
50
Max plate voltage
14400 V
Max plate dissipation
15000 W
Max cathode current
6 A

High-power RF triode; published principal characteristic and limiting values promoted.

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 E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Filament voltage

    7 V

  • Filament current

    175 A

  • Transconductance

    40000 uS

  • Amplification factor

    50

Capacitance

  • Anode to filament capacitance

    0.8 pF

  • Grid to filament capacitance

    66 pF

  • Anode to grid capacitance

    22 pF

Other

  • Maximum anode voltage

    14400 V

  • Maximum anode current

    6 A

  • Maximum anode dissipation

    15000 W

  • Operating frequency

    30 MHz

    IndustrialClassC

  • Operating anode voltage

    12000 V

    IndustrialClassC;Frequency=30MHz

  • Operating anode current

    5.33 A

    IndustrialClassC;Frequency=30MHz

  • Anode output power

    51200 W

    IndustrialClassC;Frequency=30MHz

  • Frequency for full ratings

    100 MHz

Construction

  • Cooling system

    ForcedAir