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Voltage - Triode (single high frequency) ·Triode

7720

High-mu ceramic-metal planar triode primarily intended as an oscillator in the ultra-high-frequency range.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 240 mA

Description

High-mu ceramic-and-metal planar triode primarily intended as an oscillator in the ultra-high-frequency range.

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
240 mA
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
0.0105 S
Amplification factor
90
Max plate voltage
250 V
Max plate dissipation
1 W
Max cathode current
11 mA

High-mu metal-ceramic planar triode for UHF oscillator service.

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 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Grid-to-plate capacitance

    1.3 pF

  • Input capacitance

    1.8 pF

  • Output capacitance

    0.032 pF

  • Heater-to-cathode capacitance

    1.5 pF