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Voltage - Dual Triode (similar) ·Triode-Triode

6072

Low-noise, long-life medium-mu twin triode intended for low-level AF voltage amplification, with two similar sections and characteristics associated with precision preamplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9A
Socket code
B9A
Base pins
9
Nominal heater
12.6 V / 175 mA

Description

The RCA 6072 is a premium medium-mu twin triode based on 12AY7.

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
9A
Socket code
B9A
Base pins
9
Nominal heater voltage
12.6 V
Nominal heater current
175 mA
Parallel heater voltage
6.3 V
Parallel heater current
350 mA
Series capable
Yes

9A - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN22G1BG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN32KBK — Cathode

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN4H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN5H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN61PAP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN71G1AG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN81KAK — Cathode

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

PIN9HCT—HCT — Heater Center Tap

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9A

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
25000 Ω
Transconductance
0.00175 S
Amplification factor
44
Max plate voltage
300 V
Max plate dissipation
1.5 W
Max cathode current
10 mA

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

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
25000 Ω
Transconductance
0.00175 S
Amplification factor
44
Max plate voltage
300 V
Max plate dissipation
1.5 W
Max cathode current
10 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    300 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Control-grid bias

    4 V

    ClassA

  • Plate current

    3 mA

    ClassA

Characteristic

  • Plate resistance

    25000 ohm

    Published handbook characteristic

  • Transconductance

    1750 µS

    Published handbook characteristic

  • Amplification factor

    44

    Published handbook characteristic

  • Heater/filament voltage

    6.3 V

    Published heater/filament rating

  • Heater/filament current

    350 mA

    Published heater/filament rating

Data set 02

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

Data set 03

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterOrFilamentVoltageNominal

    6.3 V

  • HeaterOrFilamentCurrentNominal

    350 mA

  • Heater Voltage Series

    12.6 V

  • Heater Current Series

    175 mA

  • Heater Voltage Parallel

    6.3 V

  • Heater Current Parallel

    350 mA

Characteristic

  • Plate Voltage

    250 V

    Published datasheet table

  • Grid Voltage

    4 V

    Published datasheet table

  • Amplification Factor

    44

    Published datasheet table

  • Plate Resistance Approximate

    25000 Ohm

    Published datasheet table

  • GridVoltageApproximateI10Microamperes

    10 uA

    Published datasheet table

  • PlateSupplyVOltage

    150 V

    Published datasheet table

  • CathodeCapacitor

    40

    Published datasheet table

  • Voltage Gain

    12.5

    Published datasheet table

Capacitance

  • OutputSectionNumber1Value1

    1 pF

    Published datasheet table

  • OutputSectionNumber1Value2

    0.5 pF

    Published datasheet table

  • OutputSectionNumber2Value1

    2 pF

    Published datasheet table

  • OutputSectionNumber2Value2

    0.4 pF

    Published datasheet table

Data set 04

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Voltage — published value 1

    12.6 V

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

  • Voltage — published value 2

    6.3 V

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

  • Current — published value 1

    175 mA

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

  • Current — published value 2

    350 mA

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

  • Grid to plate (Each unit)

    1.4

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

  • Grid to cathode and heater (Each unit)

    1.5

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

  • Plate Voltage

    250 V

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

  • Grid Voltage

    -4 V

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

  • Plate Resistance (Approx.)

    25000 ohm

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

  • Transconductance

    1750

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

  • Plate Current

    3 mA

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

  • Grid Voltage (Approx.) for plate µa = 10 — published value 1

    10 V

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

  • Grid Voltage (Approx.) for plate µa = 10 — published value 2

    -8 V

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

  • Pin 1 -Plate of — published value 1

    1

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

  • Pin 1 -Plate of — published value 2

    6

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

  • Pin 2 -Grid of — published value 1

    2

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

  • Pin 2 -Grid of — published value 2

    7

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

  • Pins 4i:9 -Heater of — published value 1

    4

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

  • Pins 4i:9 -Heater of — published value 2

    9

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

  • Pins 4i:9 -Heater of — published value 3

    9

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

  • Pins 5&9 -Heater of — published value 1

    5

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

  • Pins 5&9 -Heater of — published value 2

    9

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

  • Plate-Supply Voltage

    150 V

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

  • Plate-Load Resistor

    20000 ohm

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

  • Grid Resistor

    0.1 Mohm

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

  • Cathode Capacitor

    40

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

  • Voltage Gain

    12.5 V

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

  • at a frequency of 25 cycles per second

    25

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

  • U nd er the fol lowing conditions: heater volts = 7.5 cycled

    7.5 V

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

  • one minute on and one minute off, heater 135 volts positive

    135 V

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

  • Mith Effective Source Impedance of 200 ohms (ApDrox.)

    200 ohm

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

  • Plate-Supply Voltage

    90 V

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

  • Plate Load Resistor — published value 1

    0.1 Mohm

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

  • Plate Load Resistor — published value 2

    0.24 Mohm

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

  • Plate Load Resistor — published value 3

    0.51 Mohm

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

  • Peak Output Voltage — published value 1

    14 V

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

  • Peak Output Voltage — published value 2

    16 V

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

  • Peak Output Voltage — published value 3

    16 V

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

  • Voltage Gains — published value 1

    25 V

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

  • Voltage Gains — published value 2

    27 V

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

  • Voltage Gains — published value 3

    27 V

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

  • Plate-Supply Voltage

    180 V

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

  • Peak Output Voltage — published value 1

    34 V

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

  • Peak Output Voltage — published value 2

    35 V

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

  • Peak Output Voltage — published value 3

    35 V

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

  • Voltage Gain• — published value 1

    28 V

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

  • Voltage Gain• — published value 2

    28 V

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

  • Voltage Gain• — published value 3

    29 V

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

  • Plate-Supply Voltage

    300 V

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

  • Peak Output Voltage — published value 1

    64 V

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

  • Peak Output Voltage — published value 2

    64 V

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

  • Peak Output Voltage — published value 3

    64 V

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

  • Voltage Gain• — published value 1

    29 V

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

  • Voltage Gain• — published value 2

    31 V

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

  • Voltage Gain• — published value 3

    31 V

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

Other

  • PLATE VOLTAGE

    330 V

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

  • Positive-bias value

    0 V

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

  • PLATE DISSIPATION — published value 1

    1 mA

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

  • PLATE DISSIPATION — published value 2

    65 mA

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

  • Heater negative with respect to cathode

    100 V

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

  • Heater positive with respect to cathode

    100 V

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

Data set 05

2026 JJ Electronic

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Ua

    250 V

    Published value

  • Ia

    3 mA

    Published value

  • f µ

    40

    Published value

  • Ua

    300 V

    Published value

  • Ug

    -50 V

    Published value

  • Wa

    1.5 W

    Published value

  • Ik

    10 mA

    Published value

Capacitance

  • cg/k

    1.6

    Published value

  • ca

    0.33

    Published value

  • cg/a

    1.7

    Published value