6247

High-mu triode for Class-A voltage-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 6247
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 200 mA

Description

High-mu triode for Class-A voltage-amplifier service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 6247
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 200 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

6247 - 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: 22600 Ω
Transconductance: 0.00265 S
Amplification factor: 60
Max plate voltage: 275 V

Promoted from clearly identified printed ratings/characteristics; additional published operating points and capacitances retained 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
250 V
ClassA
Cathode resistor
500 Ω
ClassA
Plate current
4.2 mA
ClassA

Characteristic

Plate resistance
22600 Ω
ClassA
Transconductance
2650 µS
ClassA
Amplification factor
60
ClassA