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Voltage - Dual Triode (similar high frequency) ·Triode-Triode

6ES8

Variable-mu twin triode designed for VHF cascode RF amplification with gain control, particularly in television tuner front ends requiring controlled amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9AJ
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 365 mA

Description

Variable-mu twin triode used as a cascode amplifier in television tuners.

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

9AJ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN22G1BG1 — Control Grid

Source label preserved; pending confirmation

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN32KBK — Cathode

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN4H—H — Heater

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN5H—H — Heater

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN61PAP — Plate (Anode)

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN71G1AG1 — Control Grid

Source label preserved; pending confirmation

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN81KAK — Cathode

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN9ISAIS — Internal Screen

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
2500 Ω
Transconductance
0.0125 S
Amplification factor
34
Max plate voltage
330 V
Max plate dissipation
1.8 W

Published maximum ratings and characteristic values promoted where applicable; additional values retained in TUBE_SECTION_PARAMETER.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
2500 Ω
Transconductance
0.0125 S
Amplification factor
34
Max plate voltage
330 V
Max plate dissipation
1.8 W

Second physical triode restored.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater Voltage......................... 4.0 6.3 Volts

    6.3 V

    Heater Voltage......................... 4.0 6.3 Volts

  • Heater Current........................ 600 365 Ma

    365 mA

    Heater Current........................ 600 365 Ma

  • Plate Voltage. .. .........coiiiriiiiiiiiienennnns 90 Volts

    90 V

    Plate Voltage. .. .........coiiiriiiiiiiiienennnns 90 Volts

  • Grid Voltage. ...t ittt it -1.2 Volts

    -1.2 V

    Grid Voltage. ...t ittt it -1.2 Volts

  • Plate Current. ...... ... 15 Ma

    15 mA

    Plate Current. ...... ... 15 Ma

  • Plate Current. .. ... ... .. i it i 15 Ma

    15 mA

    Plate Current. .. ... ... .. i it i 15 Ma

  • Transconductance. .. .....ccvvviven et 12,500 umhos

    12.5 umhos

    Transconductance. .. .....ccvvviven et 12,500 umhos

Other

  • Plate Supply Voltage (Ib =0Ma).................. 550 Volts Max.

    550 V

    Plate Supply Voltage (Ib =0Ma).................. 550 Volts Max.

  • Plate Voltage. .. .......coovvniiiiiiiiiiiiennunens 130 Volts Max.

    130 V

    Plate Voltage. .. .......coovvniiiiiiiiiiiiennunens 130 Volts Max.

  • Plate Dissipation......... ... oo, 1.8 Watts Max.

    1.8 W

    Plate Dissipation......... ... oo, 1.8 Watts Max.

  • Cathode Current. . ........ ...t iiiiinnvnas 22 Ma Max.

    22 mA

    Cathode Current. . ........ ...t iiiiinnvnas 22 Ma Max.

  • Negative Grid Voltage................... ..coivan.. 50 Volts Max.

    50 V

    Negative Grid Voltage................... ..coivan.. 50 Volts Max.

  • Grid Circuit Resistance. ................... e, 1.0 Megohm Max.

    1 Megohm

    Grid Circuit Resistance. ................... e, 1.0 Megohm Max.

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

    365 mA

    Published heater rating

  • Amplification factor

    34

    CascodeRF

  • Plate resistance

    2500 ohm

    CascodeRF

  • Transconductance

    12500 µS

    CascodeRF

Other

  • Plate voltage

    90 V

    CascodeRF

  • Control-grid bias

    -1.4 V

    CascodeRF

  • Plate current

    15 mA

    CascodeRF

Data set 03

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    90 V

    ClassA

  • Plate current

    15 mA

    ClassA

  • Maximum plate voltage

    330 V

  • with plate current = 0 — published value 1

    0 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • with plate current = 0 — published value 2

    550 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • PLATE VOLTAGE (Each Unit)

    130 V

    EachUnit

  • Negative-bias value lEach Unit)

    50 V

    EachUnit

  • CATHODE CURRENT (Each Unit)

    22 mA

    EachUnit

  • PLATE DISSIPATION (Each Unit)

    1.8 mA

    EachUnit

  • and heater

    50 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • and heaters

    50 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • and heaters

    130 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid-Circuit Resistance (Each Unit)

    1 mA

    EachUnit

Characteristics

  • Plate resistance

    2500 ohm

    ClassA

  • Transconductance

    12500 uS

    ClassA

  • Voltage (AC or DC)

    6.3 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Current

    365 mA

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid to plate (Each unit) — published value 1

    1.9

    EachUnit

  • Grid to plate (Each unit) — published value 2

    1.9

    EachUnit

  • Plate to cathode (Each unit) — published value 1

    0.18

    EachUnit

  • Plate to cathode (Each unit) — published value 2

    0.17

    EachUnit

  • Heater to cathode (Each unit) — published value 1

    3

    EachUnit

  • Heater to cathode (Each unit) — published value 2

    3

    EachUnit

  • Plate Voltage — published value 1

    90 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Plate Voltage — published value 2

    90 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Plate Voltage — published value 3

    90 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid Voltage — published value 1

    -1.2 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid Voltage — published value 2

    -5 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Grid Voltage — published value 3

    -9 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Plate Resistance (Approx )

    2500 ohm

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Transconductance — published value 1

    12500

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Transconductance — published value 2

    625

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Transconductance — published value 3

    125

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Plate Current

    15 mA

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Pin 1 -Plate of — published value 1

    1

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Pin 1 -Plate of — published value 2

    6

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Pin 3 —Cathode of — published value 1

    3

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Pin 3 —Cathode of — published value 2

    8

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Pin 4 -Heater — published value 1

    4

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Pin 4 -Heater — published value 2

    9

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Pin 5 -Heater

    5

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Supply Voltage

    180 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Plate Current

    15 mA

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Transconductance

    12500

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • Noise Figure9

    6.5

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • transconductance (.mhos) = 125 — published value 1

    125 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • transconductance (.mhos) = 125 — published value 2

    -9 V

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • factor = 0.01 and transconductance

    0.01

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • d Grountletl-cathotle Input unit—pins 6, ~, ono e

    6

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • d Grounded-grid output unit—pl ns 1, 2, and — published value 1

    1

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

  • d Grounded-grid output unit—pl ns 1, 2, and — published value 2

    2

    Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

Data set 04

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage (ac/dc)

    6.3 V

    Published in approved ECC189 target datasheet entry; Section1

  • Plate Voltage 90 90

    90 V

    Published in approved ECC189 target datasheet entry; Section1

  • Grid Voltage —1.2 —5

    -9 V

    Published in approved ECC189 target datasheet entry; Section1

  • Plate Resistance (Approx.)

    2500 Ω

    Published in approved ECC189 target datasheet entry; Section1

  • Transconductance 1 2500 625

    125 µS

    Published in approved ECC189 target datasheet entry; Section1

  • Plate Current

    15 mA

    Published in approved ECC189 target datasheet entry; Section1

  • Plate Supply Voltage with plate current of

    0 mA

    Published in approved ECC189 target datasheet entry; Section1

  • Plate Supply Voltage with plate current of 0 mA

    550 V

    Published in approved ECC189 target datasheet entry; Section1

  • Plate Voltage (Each unit)

    130 V

    Published in approved ECC189 target datasheet entry; Section1

  • Grid Voltage, Negative-bias value (Each unit)

    50 V

    Published in approved ECC189 target datasheet entry; Section1

  • Cathode Current (Each unit)

    22 mA

    Published in approved ECC189 target datasheet entry; Section1

  • Plate Dissipation (Each unit)

    1.8 W

    Published in approved ECC189 target datasheet entry; Section1

  • RMS voltage between cathode and heater

    50 V

    Published in approved ECC189 target datasheet entry; Section1

  • RMS voltage between cathode and heater*

    50 V

    Published in approved ECC189 target datasheet entry; Section1

  • DC voltage between cathode and heater*

    130 V

    Published in approved ECC189 target datasheet entry; Section1

  • Supply Voltage

    180 V

    Published in approved ECC189 target datasheet entry; Section1

  • transconductance of

    125 µS

    Published in approved ECC189 target datasheet entry; Section1

  • transconductance of 125 /imhos

    500 mV

    Published in approved ECC189 target datasheet entry; Section1

  • Grid-Circuit Resistance (Each unit)

    1 MΩ

    Published in approved ECC189 target datasheet entry; Section1

  • Heater Voltage (ac/dc)

    6.3 V

    Published in approved ECC189 target datasheet entry; Section1

  • Heater Current

    300 mA

    Published in approved ECC189 target datasheet entry; Section1

  • Grid to Plate

    1.5 pF

    Published in approved ECC189 target datasheet entry; Section1

  • Grid to Cathode and Heater

    1.6 pF

    Published in approved ECC189 target datasheet entry; Section1

  • Plate to Cathode and Heater

    0.2 pF

    Published in approved ECC189 target datasheet entry; Section1

Capacitance

  • Plate to Cathode (Each Unit) 0.18

    0.17 pF

    Published in approved ECC189 target datasheet entry; Section1

  • 100000 ohms cathode resistor,

    2700 Ω

    Published in approved ECC189 target datasheet entry; Section1