7739

Planar UHF triode designed specifically for pulse-oscillator applications in the approximately 4–5 GHz microwave-frequency region.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 1.18 A

Description

Planar UHF triode designed for pulse-oscillator applications at frequencies in the 4–5 GHz region.

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: 6.3 V
Nominal heater current: 1.18 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

Max plate dissipation: 7.5 W

Du Mont 7739 pulse-oscillator rating: maximum peak plate voltage 350 V, maximum peak plate current 325 mA, frequency range 4–5 GHz. These are pulse ratings, not unrestricted continuous DC ratings.

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

1960 Du Mont

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater Voltage
6.3 V
Heater Current
1.18 A

Other

MaximumOperatingFrequency
5000 MHz
PulseOscillator
OperatingFrequencyMinimum
4000 MHz
PulseOscillator
OperatingFrequencyMaximum
5000 MHz
PulseOscillator
Plate Dissipation
7.5 W