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Voltage Radio Detector Converter ·Pentode-Triode

6BL8

Medium-mu triode plus sharp-cutoff pentode used primarily for television frequency-changer service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9DC
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 450 mA

Description

Medium-mu triode plus sharp-cutoff pentode used in television frequency-changer service.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9DC
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9DC - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN21G1AG1 — Control Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN31G2AG2 — Screen Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN4H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN5H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN61PAP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN71G3AG3 — Suppressor GridGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN7ISAIS — Internal ScreenGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN71KAK — CathodeGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN82KBK — Cathode

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN92G1BG1 — Control Grid

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DC

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
20000 Ω
Transconductance
0.005 S
Amplification factor
47
Max plate voltage
250 V
Max plate dissipation
1.5 W
Max cathode current
14 mA

Published promoted values applied where applicable; additional table data retained as parameters.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
400000 Ω
Transconductance
0.0062 S
Max plate voltage
250 V
Max screen voltage
175 V
Max plate dissipation
1.7 W
Max screen dissipation
0.5 W
Max cathode current
14 mA

Published promoted values applied where applicable; additional table data retained as parameters.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage

    100 V

    TypicalCharacteristics

Characteristic

  • Conversion Conductance

    2200 uS

    MixerService

SECTION 2

Pentode

Other

  • Plate Voltage

    170 V

    TypicalCharacteristics

Characteristic

  • Conversion Conductance

    2100 uS

    MixerService

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    430 mA

    Published heater rating

  • Triode amplification factor

    47

    TriodeSection Oscillator

Other

  • Triode plate voltage

    170 V

    TriodeSection Oscillator

  • Triode control-grid bias

    -2 V

    TriodeSection Oscillator

  • Triode plate current

    10 mA

    TriodeSection Oscillator

SECTION 2

Pentode

Other

  • Mixer plate voltage

    100 V

    PentodeSection Mixer

  • Mixer plate current

    14 mA

    PentodeSection Mixer

Characteristic

  • Mixer amplification factor

    20

    PentodeSection Mixer

  • Mixer plate resistance

    400000 ohm

    PentodeSection Mixer

  • Mixer transconductance

    5000 µS

    PentodeSection Mixer

Data set 03

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • INPUT CAPACITANCE

    5.5 pF

    Capacitances | INPUT CAPACITANCE 2.5 5.5 pf

  • OUTPUT CAPACITANCE

    3.8 pF

    Capacitances | OUTPUT CAPACITANCE 1.8 3.8 pf

  • PLATE TO GRID #

    0.025 pF

    Capacitances | PLATE TO GRID #1 (MAX.) 0.025 pf

  • PLATE TO GRID

    1.5 pF

    Capacitances | PLATE TO GRID 1.5 pf

Other

  • MAXIMUM PLATE DISSIPATION Z

    7 W

    Maximum Ratings | MAXIMUM PLATE DISSIPATION Z.5 I.7 WATTS

  • MAXIMUM GRID CIRCUIT RESISTANCE O

    5 Mohm

    Maximum Ratings | MAXIMUM GRID CIRCUIT RESISTANCE O.5 MEGOHM

  • FIXED BIAS O

    5 Mohm

    Maximum Ratings | FIXED BIAS O.5 MEGOHM

  • GRID #

    -2 V

    Maximum Ratings | GRID #1 VOLTAGE -2 -2 VOLTS

  • GRID #

    1 Mohm

    Maximum Ratings | GRID #1 CIRCUIT RESISTANCE O.1 O.1 MEGOHM

  • OSCILLATOR VOLTAGE . RMS

    3.5 V

    Maximum Ratings | OSCILLATOR VOLTAGE . RMS 3.5 3.5 VOLTS

Characteristic

  • BE DESIGNED SO THAT WI TM A PEAK CATHODE CURRENT OF

    100 mA

    Triode Section | BE DESIGNED SO THAT WI TM A PEAK CATHODE CURRENT OF 100 MA IT STILL OPERATES SATISFACTORILY. IT

SECTION 2

Pentode

Capacitance

  • PENTODE PLATE TO TRIODE PLATE (MAX.)

    0.07 pF

    Capacitances | PENTODE PLATE TO TRIODE PLATE (MAX.) 0.07 pf

  • PENTODE PLATE TO TRIODE GRID (MAX.)

    0.02 pF

    Capacitances | PENTODE PLATE TO TRIODE GRID (MAX.) 0.02 pf

  • PENTODE GRID TO TRIOdE PLATE (MAX.)

    0.16 pF

    Capacitances | PENTODE GRID TO TRIOdE PLATE (MAX.) 0.16 pf

Characteristic

  • ECz== Supply Voltage

    170 V

    Pentode Section | ECz== Supply Voltage = 170 Volts _

  • EC

    1800 ohm

    Pentode Section | EC2 = Series Resistance = 1800 Ohms. _

  • EC

    1 Mohm

    Pentode Section | EC1 = Circuit Resistance = 1 Megohm._ —

  • — EC

    170 V

    Pentode Section | — EC2 = Supply Voltage = 170 Volts

  • EcZ = Series Resistance

    18000 ohm

    Pentode Section | = EcZ = Series Resistance = 18000 Ohms

  • ~s Ec

    1 Mohm

    Pentode Section | ~s Ec1 = Circuit Resistance = 1 Megohm -----

Data set 04

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Current at heater volts = 6.3 — published value 1

    6.3 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Current at heater volts = 6.3 — published value 2

    0 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Current at heater volts = 6.3 — published value 3

    450 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid to plate

    1.5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid to cathode and heater

    2.5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate to cathode and heater

    1.8

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • and heater

    5.5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate to cathode 8 grid No.3 &

    8

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • and heater

    3.8

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Voltage — published value 1

    100 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Voltage — published value 2

    170 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid-No.2 Voltage

    170 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid~lo.i Voltage — published value 1

    -2 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid~lo.i Voltage — published value 2

    -2 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • to Grid No 1 — published value 1

    1

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • to Grid No 1 — published value 2

    47

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Resistance (Approx )

    0.4 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Transconductance — published value 1

    5000

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Transconductance — published value 2

    6200

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Current — published value 1

    14 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Current — published value 2

    10 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid-No.2 Current — published value 1

    2 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid-No.2 Current — published value 2

    8 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Equivalent Noise Resistance

    1500 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 4 -Heater

    4

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 5 -Heater — published value 1

    5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 5 -Heater — published value 2

    8

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 9 -Triode Grid

    9

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

  • Grid No.l to plate — published value 1

    0 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid No.l to plate — published value 2

    25 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE SUPPLY VOLTAGE — published value 1

    550 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE SUPPLY VOLTAGE — published value 2

    550 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE VOLTAGE — published value 1

    250 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE VOLTAGE — published value 2

    250 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • SUPPLY VOLTAGE

    550 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • CATHODE CURRENT — published value 1

    14 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • CATHODE CURRENT — published value 2

    14 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE DISSIPATION — published value 1

    1.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE DISSIPATION — published value 2

    1 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE DISSIPATION — published value 3

    7 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • For fixed-bias operation — published value 1

    0.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • For fixed-bias operation — published value 2

    0.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • For cathode-bias operation — published value 1

    0.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • For cathode-bias operation — published value 2

    1 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

SECTION 2

Pentode

Other

  • Pentode plate to triode grid

    0.02 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pentode grid No.l to triode plate

    0.16 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pentode plate to triode plate

    0.07 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Characteristics

  • Pin 1 -Triode Plate — published value 1

    1

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1 -Triode Plate — published value 2

    7

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2 -Pentode

    2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 6 -Pentode Plate

    6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • • Pulse duration must not exceed 15% of a vertical scanning cycle (

    2.5 milliseconds

    Published in approved ECF80 target datasheet entry; Section1

  • Heater Voltage (ac/dc) 4.6

    6.3 V

    Published in approved ECF80 target datasheet entry; Section1

  • Heater Current 0.6

    450 mA

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Supply Voltage 550

    550 V

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Voltage 250

    250 V

    Published in approved ECF80 target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Supply Voltage

    550 V

    Published in approved ECF80 target datasheet entry; Section1

  • With cathode current of

    14 mA

    Published in approved ECF80 target datasheet entry; Section1

  • With cathode current of 14 mA

    175 V

    Published in approved ECF80 target datasheet entry; Section1

  • With cathode current less than

    10 mA

    Published in approved ECF80 target datasheet entry; Section1

  • With cathode current less than 10 mA

    200 V

    Published in approved ECF80 target datasheet entry; Section1

  • Cathode Current 14

    14 mA

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Dissipation 1.5

    1.7 W

    Published in approved ECF80 target datasheet entry; Section1

  • With plate dissipation greater than

    1.2 W

    Published in approved ECF80 target datasheet entry; Section1

  • With plate dissipation greater than 1.2 watts

    0.5 W

    Published in approved ECF80 target datasheet entry; Section1

  • With p.late dissipation less than

    1.2 W

    Published in approved ECF80 target datasheet entry; Section1

  • Input Resistance at frequency of

    50 MHz

    Published in approved ECF80 target datasheet entry; Section1

  • Equivalent Noise Resistance

    1500 Ω

    Published in approved ECF80 target datasheet entry; Section1

  • For fixed-bias operation 0.5

    0.5 MΩ

    Published in approved ECF80 target datasheet entry; Section1

  • For cathode-bias operation 0.5

    1 MΩ

    Published in approved ECF80 target datasheet entry; Section1

  • Heater Voltage 6.3

    50 V

    Published in approved ECF80 target datasheet entry; Section1

  • Heater Current 0.78

    100 mA

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Supply Voltage 550

    900 V

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Voltage 300

    600 V

    Published in approved ECF80 target datasheet entry; Section1

  • Grid-No.2 Supply Voltage

    550 V

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Dissipation 1

    7 W

    Published in approved ECF80 target datasheet entry; Section1

  • Grid-No.2 Input

    1.8 W

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Voltage 100

    200 V

    Published in approved ECF80 target datasheet entry; Section1

  • For fixed-bias operation I

    1 MΩ

    Published in approved ECF80 target datasheet entry; Section1

  • For cathode-bias operation 2

    2 MΩ

    Published in approved ECF80 target datasheet entry; Section1

Characteristic

  • Plate Voltage 100

    170 V

    Published in approved ECF80 target datasheet entry; Section1

  • Transconductance 5000

    6200 µS

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Current 14

    10 mA

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Resistance (Approx.)

    0.02 MΩ

    Published in approved ECF80 target datasheet entry; Section1

  • Transconductance 2500

    6400 µS

    Published in approved ECF80 target datasheet entry; Section1

  • Plate Current 3.5

    35 mA

    Published in approved ECF80 target datasheet entry; Section1

  • Grid-No.2 Current

    7 mA

    Published in approved ECF80 target datasheet entry; Section1

SECTION 2

Pentode

Other

  • • Pulse duration must not exceed 15% of a vertical scanning cycle (

    2.5 milliseconds

    Published in approved ECF80 target datasheet entry; Section2

  • Heater Voltage (ac/dc) 4.6

    6.3 V

    Published in approved ECF80 target datasheet entry; Section2

  • Heater Current 0.6

    450 mA

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Supply Voltage 550

    550 V

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Voltage 250

    250 V

    Published in approved ECF80 target datasheet entry; Section2

  • Grid-No.2 (Screen-Grid) Supply Voltage

    550 V

    Published in approved ECF80 target datasheet entry; Section2

  • With cathode current of

    14 mA

    Published in approved ECF80 target datasheet entry; Section2

  • With cathode current of 14 mA

    175 V

    Published in approved ECF80 target datasheet entry; Section2

  • With cathode current less than

    10 mA

    Published in approved ECF80 target datasheet entry; Section2

  • With cathode current less than 10 mA

    200 V

    Published in approved ECF80 target datasheet entry; Section2

  • Cathode Current 14

    14 mA

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Dissipation 1.5

    1.7 W

    Published in approved ECF80 target datasheet entry; Section2

  • With plate dissipation greater than

    1.2 W

    Published in approved ECF80 target datasheet entry; Section2

  • With plate dissipation greater than 1.2 watts

    0.5 W

    Published in approved ECF80 target datasheet entry; Section2

  • With p.late dissipation less than

    1.2 W

    Published in approved ECF80 target datasheet entry; Section2

  • Input Resistance at frequency of

    50 MHz

    Published in approved ECF80 target datasheet entry; Section2

  • Equivalent Noise Resistance

    1500 Ω

    Published in approved ECF80 target datasheet entry; Section2

  • For fixed-bias operation 0.5

    0.5 MΩ

    Published in approved ECF80 target datasheet entry; Section2

  • For cathode-bias operation 0.5

    1 MΩ

    Published in approved ECF80 target datasheet entry; Section2

  • Heater Voltage 6.3

    50 V

    Published in approved ECF80 target datasheet entry; Section2

  • Heater Current 0.78

    100 mA

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Supply Voltage 550

    900 V

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Voltage 300

    600 V

    Published in approved ECF80 target datasheet entry; Section2

  • Grid-No.2 Supply Voltage

    550 V

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Dissipation 1

    7 W

    Published in approved ECF80 target datasheet entry; Section2

  • Grid-No.2 Input

    1.8 W

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Voltage 100

    200 V

    Published in approved ECF80 target datasheet entry; Section2

  • For fixed-bias operation I

    1 MΩ

    Published in approved ECF80 target datasheet entry; Section2

  • For cathode-bias operation 2

    2 MΩ

    Published in approved ECF80 target datasheet entry; Section2

Characteristic

  • Plate Voltage 100

    170 V

    Published in approved ECF80 target datasheet entry; Section2

  • Transconductance 5000

    6200 µS

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Current 14

    10 mA

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Resistance (Approx.)

    0.02 MΩ

    Published in approved ECF80 target datasheet entry; Section2

  • Transconductance 2500

    6400 µS

    Published in approved ECF80 target datasheet entry; Section2

  • Plate Current 3.5

    35 mA

    Published in approved ECF80 target datasheet entry; Section2

  • Grid-No.2 Current

    7 mA

    Published in approved ECF80 target datasheet entry; Section2