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Diode (NOT rectifier) ·Diode-Diode

6AL5

Standard miniature twin diode for detector, phase-comparator, discriminator, clipping, switching, and general signal-rectification service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
E7-1
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

Indirectly heated dual diode intended for detector and phase-comparator service.

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
300 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

Diode

X-ray radiationInterelectrode capacitances
Max plate dissipation
0.25 W
Max cathode current
10 mA
Rectifier peak inverse voltage
330 V
Rectifier nominal output current
9 mA
Rectifier peak forward current
54 mA
Rectifier forward voltage drop
10 V
Rectifier max heater-cathode voltage
330 V

Representative of both identical diode sections; half-wave rectifier values are per plate.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Second physical diode section added in approved section-structure reconciliation.

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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Resonant Frequency

    700 MHz

    Each section

  • RMS Input per Anode

    150 V

    HalfWaveRectifier

  • Supply Impedance per Anode

    300 ohm

    HalfWaveRectifier; minimum

Characteristics

  • Diode to Cathode and Heater Capacitance

    3.2 pF

    Each section

  • Cathode to Diode and Heater Capacitance

    3.6 pF

    Each section

Data set 02

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Peak Inverse Voltage

    275 V

  • Nominal DC Output Current

    10 mA

  • Peak Forward Current

    350 mA

  • AC Plate Voltage per Plate

    117 V

  • DC Output Current per Plate

    9 mA

Characteristic

  • Forward Voltage Drop

    10 V

Data set 03

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value

  • Heater current

    300 mA

    Published nominal value

Data set 04

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

  • Resonant Frequency

    700 MHz

    EachSection

Other

  • RMS Input per Anode

    150 V

    HalfWaveRectifier

  • Supply Impedance per Anode

    300 ohm

    HalfWaveRectifier

  • Rectified Current per Anode

    9 mA

    HalfWaveRectifier

Data set 05

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

  • Tube voltage drop

    10 V

    At 60 mA DC

Other

  • Peak inverse voltage

    330 V

    HalfWave

  • DC output current per plate

    9 mA

    HalfWave

  • RMS supply voltage per plate

    117 V

    HalfWave

  • Peak current per plate

    54 mA

    HalfWave

Data set 06

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

  • Interelectrode capacitances

    Published

    See source sheet for electrode-specific capacitance values

Data set 07

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    300 mA

Data set 08

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • RMS input voltage maximum

    150 V

    EachSection

  • Maximum resonant frequency

    700 MHz

    EachSection

  • RMS input voltage

    150 V

    HalfWaveRectifier;EachSection

  • Output current

    9 mA

    HalfWaveRectifier;EachSection

  • Supply impedance

    300 Ohm

    HalfWaveRectifier;EachSection

Capacitance

  • Anode-to-anode capacitance maximum

    0.026 pF

  • Anode-to-cathode/heater/shield capacitance

    3 pF

    EachSection

Data set 09

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • ACPlateVoltageEachPlate

    117 V

  • Heater Warmup Time

    11 s

Characteristic

  • ResonantFrequencyEachUnit

    700 MHz

Data set 10

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • AC supply voltage per plate

    117 V

    FullWave

  • DC output current per plate

    9 mA

    FullWave

  • Minimum total effective plate supply impedance

    300 ohm

    FullWave

Data set 11

1963 Siemens

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

  • Forward current at 10 V

    60 mA

    Nominal

  • Resonance frequency

    700 MHz

Other

  • Peak diode current

    60 mA

Data set 12

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Peak inverse voltage maximum

    275 V

  • Peak plate current maximum per plate

    350 mA

  • DC output current maximum per plate

    10 mA

  • Steady-state peak plate current maximum per plate

    60 mA

  • Typical AC plate voltage per plate

    117 V

  • Typical DC output current per plate

    9 mA

Data set 13

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

  • HeaterOrFilamentVoltage

    6.3 V

  • HeaterOrFilamentCurrent

    300 mA

  • Plate To Cathode Capacitance

    3.2 pF

Other

  • PeakInverseVoltageMaximum

    330 V

    EachDiode

  • PeakPlateCurrentMaximum

    54 mA

    EachDiode

  • DCOutputCurrentMaximum

    9 mA

    EachDiode

Data set 14

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Maximum AC plate voltage

    117 V RMS

    EachSection

  • Steady-state peak plate current maximum

    54 mA

    EachSection

  • Application

    Detector, discriminator, limiter, low-current rectifier

    Section1

Characteristic

  • Resonant frequency approximately

    700 MHz

    EachSection

Capacitance

  • Interelectrode capacitance

    3 pF

    EachSection

Data set 15

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Diode

Capacitance

  • Plate-Cathode-Heater Capacitance Shielded

    3.1 pF

    EachSection

  • Plate-Cathode-Heater Capacitance Unshielded

    2.5 pF

    EachSection

  • Interplate Capacitance Shielded

    <0.026 pF

    EachSection

  • Interplate Capacitance Unshielded

    <0.068 pF

    EachSection

Other

  • Peak Inverse Voltage

    330 V

    EachSection

  • Average Plate Current

    9 mA

    EachSection

Data set 16

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • HeaterOrFilamentVoltageNominal

    6.3 V

  • HeaterOrFilamentCurrentNominal

    300 mA

  • Maximum Peak Inverse Voltage

    330 V

  • NominalDCOutputCurrent

    9 mA

  • PeakForwardCurrent

    54 mA

  • Maximum Heater Cathode Voltage

    330 V

Characteristic

  • Forward Voltage Drop

    10 V

Data set 17

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Heater voltage…...….…..…eersrereeeninmnenensçenss VÊ

    6.3 V

  • Heater current.…..…..….………sirererencenencnnnennnn IË

    300 mA

  • Peak inverse voltage d'anode………. ……s VAiCE

    420 V

  • Courant d'AnOd@E ….....……rineereeserencnsenençrenenmnennnnnn Ü e

    9 mA

Characteristic

  • Capacitance anode/ cathode, filament …………………… Ca/kf

    2.5 pF

    InterelectrodeCapacitance

  • Capacitance cathode/ anode, filament …… Ck/af

    3.4 pF

    InterelectrodeCapacitance

  • Capacitance entre anodes ……n Ca'/a"

    0.068 pF

    InterelectrodeCapacitance

Data set 18

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Heater voltage

    6.3 V

    Nominal

  • Heater current

    300 mA

    Nominal

  • Maximum peak inverse plate voltage

    275 V

    Promoted published value

Characteristic

  • Peak forward/plate current

    60 mA

    Promoted published value

  • Nominal/DC output current

    10 mA

    Promoted published value

  • Voltage

    20 V

  • Current at

    0.3 V

Data set 19

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    300 mA

  • Peak inverse plate voltage

    330 V

  • Peak plate current

    54 mA

  • DC output current

    9 mA

  • AC plate voltage RMS

    117 V

    HalfWaveRectifier

  • Minimum effective plate-supply impedance

    300 ohm

    HalfWaveRectifier

Data set 20

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Heater Voltage (ac/dc) 3.15 6.3

    12.6 V

    Published in approved 6AL5 target entry; Section1

  • Peak Inverse Plate Voltage

    330 V

    Published in approved 6AL5 target entry; Section1

Capacitance

  • Plate No.l to Cathode No.l, Heater, and Internal Shield

    2.5 pF

    Published in approved 6AL5 target entry; Section1

  • Plate No.2 to Cathode No.2, Heater, and Internal Shield

    2.5 pF

    Published in approved 6AL5 target entry; Section1

  • Cathode No.l to Plate No.l, Heater, and Internal Shield

    3.4 pF

    Published in approved 6AL5 target entry; Section1

  • Cathode No.2 to Plate No.2, Heater, and Internal Shield

    3.4 pF

    Published in approved 6AL5 target entry; Section1