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

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

GS35B

Metal-ceramic RF power triode intended for high-frequency generation and amplification. Its compact transmitting construction and substantial plate capability suit RF power stages requiring high operating frequency and dependable power handling.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 2.95 A

Description

The GS35B is a grounded-grid rf triode for continuous-wave generation and amplification.

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
12.6 V
Nominal heater current
2.95 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
Transconductance
0.025 S
Max plate voltage
2500 V
Max plate dissipation
1500 W
Max grid dissipation
26 W
Max cathode current
1.4 A

Promoted from English maximum values and characteristics.

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

1968 Electronintorg

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater current

    2.65 A to 3.25 A

  • Mutual conductance

    25 mA/V

Other

  • Maximum anode voltage

    2500 V

  • Maximum cathode/anode current

    1.4 A

  • Anode dissipation

    1500 W

  • Grid dissipation

    26 W

  • Grid voltage instantaneous range

    -400 to 120 V

  • Warm-up time maximum

    90 s

  • Output power minimum

    800 W

    AnodeVoltage=2.5kV;AnodeCurrent=0.7A;Wavelength=60cm

  • Output power minimum

    350 W

    AnodeVoltage=2.2kV;AnodeCurrent=0.8A;Wavelength=30cm

Capacitance

  • Input capacitance

    18 to 24 pF

  • Output capacitance maximum

    0.12 pF

  • Transfer capacitance

    3.8 to 5 pF