Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - TV Vertical Output ·Pentode

6K6GT

Glass-octal power pentode for radio-receiver output stages, also usable in triode connection for television vertical-deflection amplification. Its primary role is low-frequency power output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
B6-8BI
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 400 mA

Description

Glass-octal power pentode for radio-receiver output stages; it can also be triode-connected for television vertical-deflection amplification.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
B6-8BI
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
400 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

B6-8BI - 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
90000 Ω
Transconductance
0.0023 S
Amplification factor
150
Max plate voltage
315 V
Max screen voltage
285 V
Max plate dissipation
8.5 W
Max screen dissipation
2.8 W
Max cathode current
25 mA

Published ratings and characteristics promoted where clearly legible in the approved source.

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

1944 Hytron

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Power Output

    3.4 W

    ClassA;OneTube

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate voltage

    315 V

    Published handbook rating

  • Maximum screen voltage

    285 V

    Published handbook rating

  • Plate voltage

    315 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Control-grid bias

    21 V

    ClassA

  • Plate current

    25.5 mA

    ClassA

  • Screen current

    4 mA

    ClassA

  • Load resistance

    9000 ohm

    ClassA

  • Power output

    4.5 W

    ClassA

Characteristic

  • Plate resistance

    110000 ohm

    Published handbook characteristic

  • Transconductance

    2100 µS

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    400 mA

    Published heater rating

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate Voltage

    315 V

    ClassA1

  • Screen Voltage

    250 V

    ClassA1

  • TriodeConnectionPlateVoltage

    250 V

    TriodeConnection

Characteristic

  • Plate Current

    25.5 mA

    ClassA1

  • Power Output

    4.5 W

    ClassA1

Data set 04

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Power_output

    3.4 W

    ClassA,OneTube

  • Power_output

    10.5 W

    PushPull,TwoTubes

Characteristic

  • Transconductance

    2300 uS

    ClassA

  • Plate resistance

    100000 ohm

    ClassA

  • Plate_current

    33 mA

    ClassA,OneTube

Capacitance

  • Input capacitance

    3 pF

    Section1

  • Output capacitance

    3 pF

    Section1

Data set 05

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate Current

    25.5 mA

  • Plate Current

    33 mA

  • Plate Current

    55 mA

  • Plate Current

    37.5 mA

  • Screen Current

    5.5 mA

  • Screen Current

    10 mA

  • Screen Current

    9 mA

  • Screen Current

    3 mA

Data set 06

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    400 mA

  • Voltage

    6.3 V

    Published source row

  • Current

    400 mA

    Published source row

  • PLATE VOLTAGE

    315 V

    Published source row

  • GRID-No

    7 V

    Published source row

  • GRID-No (value 2)

    285 V

    Published source row

  • GRID-No

    2 W

    Published source row

  • GRID-No (value 2)

    2.8 W

    Published source row

  • PLATE DISSIPATION

    8.5 W

    Published source row

  • Plate Voltage

    100 V

    Published source row

  • Plate Voltage (value 2)

    250 V

    Published source row

  • Plate Voltage (value 3)

    315 V

    Published source row

  • Grid-No

    2 V

    Published source row

  • Grid-No (value 2)

    100 V

    Published source row

  • Grid-No (value 3)

    250 V

    Published source row

  • Grid-No.l Voltage

    -7 V

    Published source row

  • Grid-No.l Voltage (value 2)

    -18 V

    Published source row

  • Grid-No.l Voltage (value 3)

    -21 V

    Published source row

  • Peak AF Grid-No.l Voltage

    7 V

    Published source row

  • Peak AF Grid-No.l Voltage (value 2)

    18 V

    Published source row

  • Peak AF Grid-No.l Voltage (value 3)

    21 V

    Published source row

  • Zero-Signal Plate Current

    9 mA

    Published source row

  • Zero-Signal Plate Current (value 2)

    32 mA

    Published source row

  • Zero-Signal Plate Current (value 3)

    25.5 mA

    Published source row

  • Max.-Signal Plate Current

    9.5 mA

    Published source row

Capacitance

  • Grid No

    1 pF

    Published source row

  • Grid No (value 2)

    0.5 pF

    Published source row

  • grid No

    2 pF

    Published source row

  • grid No (value 2)

    5.5 pF

    Published source row

  • grid No

    2 pF

    Published source row

  • grid No (value 2)

    6 pF

    Published source row

Data set 07

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • For cathode-bias operation 2.2

    2.2 MΩ

    Published in approved 6K6GT target datasheet entry; Section1

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

    2.5 milliseconds

    Published in approved 6K6GT target datasheet entry; Section1

  • Plate Voltage

    315 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Voltage

    285 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Plate Dissipation

    8.5 W

    Published in approved 6K6GT target datasheet entry; Section1

  • Grid-No.2 Input

    2.8 W

    Published in approved 6K6GT target datasheet entry; Section1

  • Plate Voltage 100 250

    315 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Grid-No.2 Voltage 100 250

    250 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage —7 —18

    -21 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Peak AF Grid-No.l Voltage 7 18

    21 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Zero-Signal Plate Current 9 32

    25.5 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Maximum-Signal Plate Current 9.5 33

    28 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Zero-Signal Grid-No.2 Current 1.6 5.5

    4 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Maximum-Signal Grid-No.2 Current 3 10

    9 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Plate Resistance (Approx.) 104000 90000

    110000 Ω

    Published in approved 6K6GT target datasheet entry; Section1

  • Transconductance 1600 2300

    2100 µS

    Published in approved 6K6GT target datasheet entry; Section1

  • Load Resistance 12000 7600

    9000 Ω

    Published in approved 6K6GT target datasheet entry; Section1

  • Total Harmonic Distortion 11 11

    15 %

    Published in approved 6K6GT target datasheet entry; Section1

  • Maximum-Signal Power Output 0.35 3.4

    4.5 W

    Published in approved 6K6GT target datasheet entry; Section1

  • Plate Supply Voltage 285

    285 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Maximum-Signal Plate Current 72

    61 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Zero-Signal Grid-No.2 Current 9

    9 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Maximum-Signal Grid-No.2 Current 17

    13 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Effective Load Resistance (Plate-to-plate) 12000

    12000 Ω

    Published in approved 6K6GT target datasheet entry; Section1

  • Total Harmonic Distortion 6

    4 %

    Published in approved 6K6GT target datasheet entry; Section1

  • Maximum-Signal Power Output 10.5

    9.8 W

    Published in approved 6K6GT target datasheet entry; Section1

Characteristic

  • Plate Voltage

    250 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Grid-No.l Voltage

    -18 V

    Published in approved 6K6GT target datasheet entry; Section1

  • Plate Current

    37.5 mA

    Published in approved 6K6GT target datasheet entry; Section1

  • Transconductance

    2700 µS

    Published in approved 6K6GT target datasheet entry; Section1

  • Plate Resistance (Approx.)

    2500 Ω

    Published in approved 6K6GT target datasheet entry; Section1

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

    0.5 mA

    Published in approved 6K6GT target datasheet entry; Section1