6J4WA

Military-specification ruggedized UHF triode based on the 6J4 for critical high-frequency applications.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 400 mA

Description

Military-specification high-mu UHF triode based on the 6J4 for critical applications.

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: 6.3 V
Nominal heater current: 400 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: 6000 Ω
Transconductance: 0.012 S
Amplification factor: 60
Max plate voltage: 250 V
Max plate dissipation: 4 W
Max cathode current: 40 mA

Published ratings and characteristics promoted from the supplied CSF/Thomson source where explicitly available.

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

Characteristic

Heater Voltage
6.3 V
Heater Current
400 mA
MaximumOperatingFrequency
500 MHz
GroundedGridAmplifier

Data set 02

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Triode

CrossReference

Prototype / equivalent family
6J4

Other

Military specification
MIL-E-1/619D

Data set 03

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage
6.3 V
Heater current
400 mA
Peak heater-cathode voltage
100 V
Plate voltage
150 V
ClassA
Cathode current
20 mA
GroundedGrid
Maximum operating frequency
500 MHz
UHF

Characteristic

Transconductance
12000 uS
GroundedGrid
Amplification factor
60

Capacitance

Cathode-to-plate capacitance
0.2 pF
Grid-to-cathode capacitance
5.5 pF
Grid-to-plate capacitance
4 pF

Construction

Premium frame-grid construction
1
Severe-environment qualification
1