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F7004

High-transconductance low-noise safety triode for grounded-grid HF amplifiers to approximately 200 MHz, intended for military and professional equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 300 mA

Description

High-amplification, high-transconductance low-noise safety triode for HF grounded-grid amplifiers to about 200 MHz, intended for military and professional equipment.

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: 300 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

Plate resistance: 2000 Ω
Transconductance: 0.025 S
Amplification factor: 50
Max plate voltage: 180 V
Max plate dissipation: 4.5 W
Max cathode current: 38 mA

Published promoted ratings/characteristics retained where readable; additional values are in TUBE_SECTION_PARAMETER.

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

1958 Compagnie General

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Grid-to-plate capacitance
0.65 pF
Maximum
Input capacitance
9 pF
Output capacitance
1.75 pF

Other

Plate voltage
150 V
ClassA
Cathode resistance
60 Ohm
ClassA
Plate current
22 mA
ClassA
Transconductance minimum
20000 uS
Transconductance maximum
30000 uS
Amplification factor minimum
35 ratio
Amplification factor maximum
55 ratio

Characteristics

Noise figure
2.7 dB
Cascode;6-60MHz;SourceResistance=400Ohm