6J6L

Long-life common-cathode twin triode intended for high-frequency amplifier, oscillator, and mixer service at frequencies extending to roughly 600 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: E7-1
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 330 mA

Description

Twin triode with common cathode for high-frequency amplifier, oscillator or mixer service up to about 600 MHz.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: E7-1
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 330 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

E7-1 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 7200 Ω
Transconductance: 0.0053 S
Amplification factor: 38

Promoted characteristic values are from the supplied datasheet; additional operating points and ranges are preserved in TUBE_SECTION_PARAMETER.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 7200 Ω
Transconductance: 0.0053 S
Amplification factor: 38

Second physical triode section; electrically identical twin section.

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

1965 Ericsson Longlife

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate supply voltage
100 V
ClassA;EachSection
Cathode bias resistor
68 Ohm
ClassA;BothSections
Plate current
6.5 mA
ClassA;EachSection
Plate supply voltage
130 V
ClassA;EachSection
Cathode bias resistor
100 Ohm
ClassA;BothSections
Plate current
7.7 mA
ClassA;EachSection
Transconductance minimum
4200 uS
EachSection
Transconductance maximum
6400 uS
EachSection

Characteristics

Transconductance
5000 uS
ClassA;EachSection;Va=100V
Amplification factor
38 ratio
ClassA;EachSection
Plate resistance
7500 Ohm
ClassA;EachSection;Va=100V
Transconductance
5300 uS
ClassA;EachSection;Va=130V
Amplification factor
38 ratio
ClassA;EachSection
Plate resistance
7200 Ohm
ClassA;EachSection;Va=130V