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Voltage - Triode (single high frequency) ·Triode

6FQ5

Semi-remote-cutoff triode designed as a VHF/RF amplifier at low B+ voltage.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 7
Nominal heater: 6.3 V / 180 mA

Description

Semi-remote-cutoff triode designed as a VHF/RF amplifier at low B+ voltage.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 180 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: 5000 Ω
Transconductance: 0.011 S
Amplification factor: 60
Max plate voltage: 250 V
Max plate dissipation: 2.5 W
Max cathode current: 22 mA

Semi-remote-cutoff VHF/RF triode.

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

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Grid-to-plate capacitance
0.4 pF
Input capacitance
4.8 pF
Output capacitance
4 pF
Heater-to-cathode capacitance
2.8 pF

Other

Plate voltage
135 V
ClassA
Grid voltage
-1.2 V
ClassA
Plate current
11.5 mA
ClassA

Characteristic

Transconductance
11000 uS
ClassA
Amplification factor
60
ClassA
Plate resistance
5500 ohm
ClassA
Grid voltage at 100 uA plate current
-5 V