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Voltage Triode Pentode ·Pentode-Triode

6MG8

Triode-pentode for television horizontal-deflection, AGC-amplifier, and sync-separator applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9DC
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 450 mA

Description

Miniature type used in horizontal-deflection circuits and for age-amplifier or sync-separator applications in television receivers. Outlines section, 6B; requires miniature 9-contact socket. Heater: volts, 6.3; ampere, 0.45; maximum heater-cathode volts, ±200 peak, 100 9DC average. Class A, Amplifier CHARACTERISTICS Triode Unit Pentode Unit 150 170 volts Plate Voltage Grid-No.2 (Screen-Grid) Voltage — — 170 volts Grid-No.l (Control-Grid) Voltage —2 volts Cathode-Bias Resistor jo ohms 18 10 mA Plate Current Grid-No.2 Current — 2.8 mA Transconductance ooQO 6200 /tmhos Plate Resistance (Approx.) j> 400 kohms 47 Amplification Factor Grid-No.l Voltage for plate current of 10 ^A —40 12 volts Horizontal-Deflection Amplifier

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

9DC - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN21G1AG1 — Control Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN31G2AG2 — Screen Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN4H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN5H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN61PAP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN71G3AG3 — Suppressor GridGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN7ISAIS — Internal ScreenGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN71KAK — CathodeGroup 9DC7

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN82KBK — Cathode

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DC

PIN92G1BG1 — Control Grid

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 131, 9DC

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
7000 Ω
Transconductance
0.0075 S
Amplification factor
47
Max plate voltage
330 V
Max plate dissipation
2 W

Full supplied entry reviewed for ratings, characteristics, operating data, and capacitances.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
400000 Ω
Transconductance
0.0062 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
2 W

Full supplied entry reviewed for ratings, characteristics, operating data, and capacitances.

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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Grid-No

    2

    Published value from supplied target entry

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

    2 volts

    Published value from supplied target entry

  • Transconductance ooQO

    6200

    Published value from supplied target entry

  • Grid-No.l Voltage for plate current of

    40

    Published value from supplied target entry

  • Plate Voltage

    330 volts

    Published value from supplied target entry

  • Grid-No

    300 volts

    Published value from supplied target entry

  • Plate Dissipation

    2 watts

    Published value from supplied target entry

  • Cathode Current

    14 mA

    Published value from supplied target entry

  • For plate dissipation more than

    0.5 watts

    Published value from supplied target entry

  • For plate dissipation less than

    0.75 watt

    Published value from supplied target entry

  • Heater Voltage (ac/dc)

    31

    Published value from supplied target entry

  • Heater Current

    31 volts

    Published value from supplied target entry

  • Heater Warm-up Time

    0.45 amperes

    Published value from supplied target entry

  • Heater-Cathode Voltage

    11 seconds

    Published value from supplied target entry

  • Plate Voltage

    176 volts

    Published value from supplied target entry

  • Voltage

    30 volts

    Published value from supplied target entry

  • Grid-No

    145 volts

    Published value from supplied target entry

  • Grid-No.l (Control-Grid) Voltage

    35 volts

    Published value from supplied target entry

  • Plate Resistance (Approx.)

    7000 ohms

    Published value from supplied target entry

  • Transconductance

    7500

    Published value from supplied target entry

  • Plate Current

    95 mA

    Published value from supplied target entry

Capacitance

  • Plate to Cathode, Heater, Grid No

    2

    Published value from supplied target entry