5798

Premium industrial twin triode intended for dependable amplifier and control service, with special-quality construction for equipment requiring stable operation and extended reliability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: K8-1
Socket code: -
Base pins: 8
Nominal heater: 26.5 V / 90 mA

Description

The 5798 is a subminiature medium-mu twin triode for oscillator-mixer service to about 400 MHz, designed for shock, vibration, and high-temperature aircraft service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: K8-1
Socket code: -
Base pins: 8
Nominal heater voltage: 26.5 V
Nominal heater current: 90 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

K8-1 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 6700 Ω
Transconductance: 0.00315 S
Amplification factor: 21
Max plate voltage: 50 V
Max plate dissipation: 0.4 W
Rectifier max heater-cathode voltage: 90 V

Representative row for two identical triode sections.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 6700 Ω
Transconductance: 0.00315 S
Amplification factor: 21
Max plate voltage: 50 V
Max plate dissipation: 0.4 W

Second physical triode restored under current one-row-per-physical-section policy.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Input capacitance
1.9 pF
Section1
Output capacitance
1.7 pF
Section1
Grid-to-plate capacitance
1.7 pF
Section1

Other

Plate voltage
26.5 V
ClassA
Grid voltage
0 V
ClassA
Plate current
2 mA
ClassA

Characteristic

Plate resistance
7100 ohm
Transconductance
3400 uS
Amplification factor
24

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate Voltage
26.5 V
ClassA EachSection
Grid Voltage
0 V
ClassA EachSection

Characteristic

Plate Current
2.3 mA
ClassA EachSection