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Power - Beam Single (NOT sweep) (under 10W) ·Pentode

6677

Beam-power output tube for substantial audio or general amplifier service, designed for higher-power operation than ordinary receiving output tubes.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 650 mA

Description

Beam-power pentode for RF power oscillator/amplifier and small-signal power service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
650 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
18000 Ω
Transconductance
0.011 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
8.5 W
Max screen dissipation
2 W
Max cathode current
75 mA

Alias/co-designation of 6CL6;

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

Pentode

Characteristic

  • Plate Resistance

    150000 ohm

  • Transconductance

    11000 µS

Other

  • Maximum Plate Voltage

    330 V

  • Maximum Screen Voltage

    330 V

  • Maximum Plate Dissipation

    8.5 W

  • Maximum Screen Dissipation

    2 W

  • Plate Voltage

    250 V

  • Screen Voltage

    150 V

  • Plate Current

    30 mA

  • Maximum Signal Power Output

    2.8 W

Data set 02

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    650 mA

  • EquivalentType

    6CL6

    RenewalUse

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    650 mA

  • EquivalentElectricalType

    6CL6

  • Transconductance

    6200 uS

Other

  • Plate Voltage

    250 V

    ClassA

  • Screen Voltage

    150 V

    ClassA

  • Plate Current

    30 mA

    ClassA

Data set 04

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

    Nominal

  • Heater current

    650 mA

    Nominal

  • Maximum plate voltage

    330 V

    Promoted published value

  • Maximum screen voltage

    330 V

    Promoted published value

  • Maximum plate dissipation

    8.5 W

    Promoted published value

  • Maximum screen dissipation

    2 W

    Promoted published value

  • Grid No.l to plate

    0.12 mA

    Direct Interelectrode Capacitances:°

  • PLATE VOLTAGE.

    330 V

    Maximum Ratings, Design-Maximum Palues:

  • GRID-No.3 (SUPPRESSOR-GRID) VOLTAGE

    0 V

    Maximum Ratings, Design-Maximum Palues:

  • GRID-No.2 (SCREEN-GRID1 SUPPLY VOLTAGE .

    330 V

    Maximum Ratings, Design-Maximum Palues:

  • GRID-No.2 VOLTAGE See Grid-No.2 Inqut Rating Chart

    2 V

    Maximum Ratings, Design-Maximum Palues:

  • GRID-No.1 (CONTROL-GRID) VOLTAGE

    1 V

    Maximum Ratings, Design-Maximum Palues:

  • For grid-No.2 voltages up to

    2 V

    Maximum Ratings, Design-Maximum Palues:

  • For grid-No.2 voltages between

    165 V

    Maximum Ratings, Design-Maximum Palues:

  • 330 volts See Grid-Ro.2 Inbut Rating Chart

    2 V

    Maximum Ratings, Design-Maximum Palues:

  • PLATE DISSIPATION

    8.5 W

    Maximum Ratings, Design-Maximum Palues:

  • Heater negative with respect to cathode

    100 V

    Maximum Ratings, Design-Maximum Palues:

  • Heater positive with respect to cathode

    100 V

    Maximum Ratings, Design-Maximum Palues:

  • Heater Voltage

    6.3 V

    Typical Operation and Characteristics:

  • Plate Voltage

    250 V

    Typical Operation and Characteristics:

  • Grid-No.2 Voltage

    150 V

    Typical Operation and Characteristics:

  • Grid-No.l Voltage —3 volts

    3 V

    Typical Operation and Characteristics:

  • Peak AF Grid-No.l Voltage

    3 V

    Typical Operation and Characteristics:

  • Zero-Signal Plate Current

    30 mA

    Typical Operation and Characteristics:

  • Max.-Signal Plate Current

    31 mA

    Typical Operation and Characteristics:

  • Zero-Signal Grid-No.2 Current

    7 mA

    Typical Operation and Characteristics:

  • Max.-Signal Grid-No.2 Current

    7.2 mA

    Typical Operation and Characteristics:

  • Plate Resistance (Approx )

    15 megohm

    Typical Operation and Characteristics:

  • Transconductance

    11000 uS

    Typical Operation and Characteristics:

  • Load Resistance

    7500 ohm

    Typical Operation and Characteristics:

  • For cathode-bias operation

    0.5 megohm

    Typical Operation and Characteristics:

  • much as

    35 V

    Typical Operation and Characteristics:

  • volts =

    7.5 V

    Typical Operation and Characteristics:

  • 135 volts positive wit h respect to cathode, and al l other

    135 V

    Typical Operation and Characteristics:

  • With heater volts =

    3 V

    Typical Operation and Characteristics:

  • ted to cathode at socket, grid-No.2 volts =

    150 V

    Typical Operation and Characteristics:

Characteristic

  • Plate resistance

    150000 ohm

    Promoted published value

  • Transconductance

    11000 uS

    Promoted published value

  • Voltage

    20 V

  • Current at

    0.65 V