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6SF5GT

General-purpose triode for voltage amplification or electronic service as documented by the manufacturer.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 6AB
Socket code: IO
Base pins: 8
Nominal heater: 6.3 V / 300 mA

Description

The 6SF5GT is a Triode intended for high-mu voltage-amplifier service. Published ratings, characteristics and typical operating data from the supplied datasheet were captured.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 6AB
Socket code: IO
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

6AB - 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: 66000 Ω
Transconductance: 0.0015 S
Amplification factor: 100
Max plate voltage: 300 V
Max plate dissipation: 1 W

Published maximum ratings and representative operating characteristics reviewed.

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

Other

Maximum plate voltage
300 V
Published handbook rating
Plate voltage
250 V
ClassA OperatingPoint1
Control-grid bias
2 V
ClassA OperatingPoint1
Plate current
0.9 mA
ClassA OperatingPoint1
Plate voltage
100 V
ClassA OperatingPoint2
Control-grid bias
1 V
ClassA OperatingPoint2
Plate current
0.4 mA
ClassA OperatingPoint2

Characteristic

Plate resistance
66000 ohm
ClassA OperatingPoint1
Transconductance
1500 µS
ClassA OperatingPoint1
Amplification factor
100
ClassA OperatingPoint1
Plate resistance
85000 ohm
ClassA OperatingPoint2
Transconductance
1150 µS
ClassA OperatingPoint2
Amplification factor
100
ClassA OperatingPoint2
Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
250 V
ClassA

Characteristic

Transconductance
1500 uS
ClassA
Plate resistance
66000 ohm
ClassA
Amplification factor
100
ClassA

Capacitance

Input capacitance
3 pF
Section1
Output capacitance
3 pF
Section1