8426

Industrial long-life sharp-cutoff pentode designed for wide-band IF and RF amplifiers. Westinghouse documentation provides both pentode and triode-connected data, combining broadband signal performance with extended industrial service life.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: 7
Nominal heater: 12.6 V / 150 mA

Description

Industrial long-life sharp-cutoff pentode for wide-band IF/RF amplifiers, with published pentode and triode-connected data.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B7G
Base pins: 7
Nominal heater voltage: 12.6 V
Nominal heater current: 150 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

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 1100000 Ω
Transconductance: 0.0062 S
Max plate voltage: 330 V
Max screen voltage: 330 V
Max plate dissipation: 3.5 W
Max screen dissipation: 0.75 W

Published ratings and characteristics promoted from the approved Westinghouse source.

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

1947 Westinghouse

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

Application
WideBand_IF_RF_Amplifier text

Characteristic

TriodeConnectedAmplificationFactor
41 ratio
TriodeConnection

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Heater voltage
6.3 V
Rated heater condition
Heater current
300 mA
Rated heater condition