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Voltage Dual Pentode ·Pentode-Pentode

6AR11

Semiremote-cutoff twin pentode designed as an intermediate-frequency amplifier in television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
12DM
Socket code
B12C
Base pins
12
Nominal heater
6.3 V / 800 mA

Description

Semiremote-cutoff twin pentode used as an IF-amplifier tube in television receivers.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
12DM
Socket code
B12C
Base pins
12
Nominal heater voltage
6.3 V
Nominal heater current
800 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12DM - 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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
200000 Ω
Transconductance
0.0105 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
3.1 W
Max screen dissipation
0.65 W
Rectifier max heater-cathode voltage
200 V

Promoted from published ratings/characteristics; identical repeated sections compressed where applicable.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
200000 Ω
Transconductance
0.0105 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
3.1 W
Max screen dissipation
0.65 W

Unit No.2 semiremote-cutoff pentode.

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

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    800 mA

  • Maximum plate voltage

    330 V

    ClassA1

  • Maximum screen supply voltage

    330 V

    ClassA1

  • Maximum screen input

    0.65 W

    ClassA1

  • Maximum plate dissipation

    3.1 W

    ClassA1

Characteristics

  • Plate supply voltage

    125 V

    ClassA1

  • Screen supply voltage

    125 V

    ClassA1

  • Cathode resistor

    56 ohm

    ClassA1

  • Plate resistance

    200000 ohm

    ClassA1

  • Transconductance

    10500 µS

    ClassA1

  • Plate current

    11 mA

    ClassA1

  • Screen current

    3.5 mA

    ClassA1

  • Grid voltage for transconductance 50 µS

    -15 V

    ClassA1

Capacitance

  • Grid No.1-to-plate capacitance

    0.026 pF

  • Plate output capacitance

    2.8 pF

SECTION 2

Pentode

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    800 mA

  • Maximum plate voltage

    330 V

    ClassA1

  • Maximum screen supply voltage

    330 V

    ClassA1

  • Maximum screen input

    0.65 W

    ClassA1

  • Maximum plate dissipation

    3.1 W

    ClassA1

Characteristics

  • Plate supply voltage

    125 V

    ClassA1

  • Screen supply voltage

    125 V

    ClassA1

  • Cathode resistor

    56 ohm

    ClassA1

  • Plate resistance

    200000 ohm

    ClassA1

  • Transconductance

    10500 µS

    ClassA1

  • Plate current

    11 mA

    ClassA1

  • Screen current

    3.5 mA

    ClassA1

  • Grid voltage for transconductance 50 µS

    -15 V

    ClassA1

Capacitance

  • Grid No.1-to-plate capacitance

    0.026 pF

  • Plate output capacitance

    3 pF

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater Voltage (ac/dc) 6.3 8.4

    11.2 V

    Published in approved 8AR11 target datasheet entry; Section1

  • Heater Current 0.8 0.6

    450 mA

    Published in approved 8AR11 target datasheet entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 8AR11 target datasheet entry; Section1

  • Grid-No.3 (Suppressor-Grid) Voltage, Positive value

    0 V

    Published in approved 8AR11 target datasheet entry; Section1

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

    330 V

    Published in approved 8AR11 target datasheet entry; Section1

  • Grid-No. 1 (Control-Grid) Voltage, Positive-bias value

    0 V

    Published in approved 8AR11 target datasheet entry; Section1

  • Plate Dissipation

    3.1 W

    Published in approved 8AR11 target datasheet entry; Section1

  • For grid-No.2 voltages up to

    165 V

    Published in approved 8AR11 target datasheet entry; Section1

  • For grid-No.2 voltages up to 165 volts

    0.65 W

    Published in approved 8AR11 target datasheet entry; Section1

  • For grid-No.2 voltages between 165 and

    330 V

    Published in approved 8AR11 target datasheet entry; Section1

  • Plate Supply Voltage

    125 V

    Published in approved 8AR11 target datasheet entry; Section1

Capacitance

  • Grid No.l to Plate 0.026

    0.026 pF

    Published in approved 8AR11 target datasheet entry; Section1

  • No. 3, and Internal Shield 10

    10 pF

    Published in approved 8AR11 target datasheet entry; Section1

  • and Internal Shield 2.8

    3 pF

    Published in approved 8AR11 target datasheet entry; Section1

  • Grid No.l to Plate of Other Unit 0.002

    0.002 pF

    Published in approved 8AR11 target datasheet entry; Section1

  • Plate of Unit No.l to Plate of Unit No.2

    0.02 pF

    Published in approved 8AR11 target datasheet entry; Section1

Characteristic

  • Grid-No.2 Supply Voltage

    125 V

    Published in approved 8AR11 target datasheet entry; Section1

  • Cathode-Bias Resistor

    56 Ω

    Published in approved 8AR11 target datasheet entry; Section1

  • Plate Resistance (Approx.)

    0.2 MΩ

    Published in approved 8AR11 target datasheet entry; Section1

  • Transconductance

    10500 µS

    Published in approved 8AR11 target datasheet entry; Section1

  • Plate Current

    11 mA

    Published in approved 8AR11 target datasheet entry; Section1

  • Grid-No.2 Current

    3.5 mA

    Published in approved 8AR11 target datasheet entry; Section1

  • Grid-No.l Voltage (Approx.) for transconductance of

    50 µS

    Published in approved 8AR11 target datasheet entry; Section1