Alternatives & variations Download PDF datasheet

Voltage - Dual Triode (similar) ·Triode-Triode

6021

Premium subminiature medium-mu twin triode with flexible leads, intended for compact amplifier and oscillator applications and capable of operation into the hundreds-of-megahertz range.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 8DG
Socket code: B8D
Base pins: 8
Nominal heater: 6.3 V / 300 mA

Description

Premium subminiature medium-mu double triode with flexible leads.

Socket description

Subminiature 8-lead

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 8DG
Socket code: B8D
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

8DG - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN12P	B	P — Plate (Anode) EIA source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG
PIN22G1	B	G1 — Control Grid Original EIA label 2G1; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG
PIN3H	—	H — Heater Original EIA label H; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG
PIN42K	B	K — Cathode Original EIA label 2K; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG
PIN51K	A	K — Cathode Original EIA label 1K; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG
PIN6H	—	H — Heater Original EIA label H; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG
PIN71G1	A	G1 — Control Grid Original EIA label 1G1; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG
PIN81P	A	P — Plate (Anode) Original EIA label 1P; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8DG

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 6500 Ω
Transconductance: 0.0054 S
Amplification factor: 35
Max plate voltage: 165 V
Max plate dissipation: 0.7 W
Max cathode current: 22 mA

Representative row for two electrically identical triode sections; TUBE.SectionCount remains 2.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 6500 Ω
Transconductance: 0.0054 S
Amplification factor: 35
Max plate voltage: 165 V
Max plate dissipation: 0.7 W
Max cathode current: 22 mA

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater or filament voltage
6.3 V
Published nominal value
Heater or filament current
300 mA
Published nominal value
Maximum operating frequency
400 MHz
Amplifier/oscillator service

Other

Maximum plate dissipation
1.1 W
Published maximum rating
Maximum altitude
60000 ft
Without pressurized chamber

Data set 02

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Construction

Premium construction
Yes

Data set 03

1958 Compagnie General

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater Voltage
6.3 V
Heater Current
300 mA
Grid-to-Plate Capacitance
1.5 pF
Each section; without shield
Input Capacitance
2.4 pF
Each section; without shield

Data set 04

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Input capacitance
2.4 pF
Output capacitance section 1
0.28 pF
Section1;Section2
Output capacitance section 2
0.32 pF
Section1;Section2
Grid-to-plate capacitance
1.5 pF

Other

Plate voltage
100 V
ClassA;PerSection
Cathode resistor
150 ohm
ClassA;PerSection
Plate current
6.5 mA
ClassA;PerSection
Plate resistance
6500 ohm
ClassA;PerSection
Transconductance
5400 uS
ClassA;PerSection
Amplification factor
35
ClassA;PerSection

Data set 05

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater Voltage
6.3 V
Heater Current
300 mA
Plate Voltage
165 V
Each section
Plate Current
6.5 mA
Each section
Transconductance
5400 uS
Each section
Plate Resistance
6500 ohm
Each section
Amplification Factor
35 ratio
Each section

Data set 06

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum Plate Current
22 mA
EachSection
Maximum Grid Resistance
1.1 Mohm
EachSection

Data set 07

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Grid capacitance
2.4 pF
EachSection
Plate capacitance
0.28 pF
EachSection
Grid-to-plate capacitance
1.5 pF
EachSection

Other

Plate voltage
100 V
EachSection
Cathode resistor
150 Ω
EachSection
Plate current
6.5 mA
EachSection
Shock resistance approximately
600 g
SpecialQuality
Vibration resistance
2.5 g
SpecialQuality

Characteristic

Transconductance
5400 µS
EachSection
Amplification factor
35
EachSection
Plate resistance
6500 Ω
EachSection
Cutoff grid voltage
-6.5 V
EachSection

Data set 08

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Grid capacitance
2.4 pF
EachSection
Plate capacitance
0.28 pF
EachSection
Grid-to-plate capacitance
1.5 pF
EachSection

Other

Plate voltage
100 V
EachSection
Cathode resistor
150 Ω
EachSection
Plate current
6.5 mA
EachSection
Shock resistance approximately
600 g
SpecialQuality
Vibration resistance
2.5 g
SpecialQuality

Characteristic

Transconductance
5400 µS
EachSection
Amplification factor
35
EachSection
Plate resistance
6500 Ω
EachSection
Cutoff grid voltage
-6.5 V
EachSection
Transconductance variation after 1000 hours maximum
25 %
LifeTest

Data set 09

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterOrFilamentVoltageNominal
6.3 V
HeaterOrFilamentCurrentNominal
300 mA
Maximum Plate Voltage
165 V
Maximum Plate Dissipation
0.7 W
Maximum Cathode Current
22 mA
Typical Plate Voltage
100 V
EachSection
TypicalCathodeBiasResistance
150 Ohm
EachSection
Typical Plate Current
6.5 mA
EachSection
MaximumGridCurrentEachSection
5.5 mA
MaximumAltitude
60000 ft
LifeExpectancyAt30C
6000 h
LifeExpectancyAt175C
1000 h

Characteristic

Plate Resistance
6500 Ohm
Transconductance
5400 uS
Amplification Factor
35

Capacitance

Grid To Plate Capacitance
1.4 pF
EachSection;WithShield
Input Capacitance
2.1 pF
EachSection;WithShield
Output Capacitance Section1
1.3 pF
WithShield
Output Capacitance Section2
1.4 pF
WithShield
GridToGridCapacitanceMaximum
0.011 pF
WithShield
PlateToPlateCapacitanceMaximum
0.33 pF
WithShield

Data set 10

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Voltage
6.3 V
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Current
300 mA
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Grid to plate (Each unit) — published value 1
1.5
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Grid to plate (Each unit) — published value 2
1.4
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Plate—Supply Voltage
100 V
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Plate Resistance (Approx.)
6500 ohm
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Transconductance
5400
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Plate Current
6.5 mA
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
plate current of 10 µa — published value 1
10 V
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
plate current of 10 µa — published value 2
6.5 V
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Lead I — Plate of
5
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Lead 2 —Grid of — published value 1
2
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Lead 2 —Grid of — published value 2
6
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Unit No.2
7
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Lead 3 —Heater
3
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Lead 4 —Cathode of — published value 1
4
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.

Other

Grid to grid — published value 1
0 mA
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Grid to grid — published value 2
13 mA
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Grid to grid — published value 3
0.011 mA
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Plate to plate — published value 1
0.52 mA
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.
Plate to plate — published value 2
0.33 mA
Published datasheet value; multiple values on a source row represent separate source-table conditions or limits.

Data set 11

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Anode current
6.5 mA
Typical per section
Grid-cathode-heater capacitance
2.4 pF
Interelectrode
Anode-cathode-heater capacitance
0.28 pF
Interelectrode
Anode-grid capacitance
1.6 pF
Interelectrode