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Tube Tinker — Electron Tube Database
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Power - Pentode Single (NOT beam) (under 10W) ·Pentode

7KY6

Frame-grid sharp-cutoff pentode for high-current video-output amplification in color and monochrome television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
7.3 V / 450 mA

Description

Frame-grid sharp-cutoff pentode used as a video output amplifier in color and black-and-white television receivers.

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
-
Socket code
B9A
Base pins
9
Nominal heater voltage
7.3 V
Nominal heater current
450 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
40000 Ω
Transconductance
0.03 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
9 W
Max screen dissipation
1 W

Frame-grid video-output 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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Peak Heater-Cathode Voltage

    200 V

    AbsoluteValue

  • Average Heater-Cathode Voltage

    100 V

    AbsoluteValue

  • Cathode Bias Resistor

    47 ohm

    ClassA

Capacitance

  • Grid No.1 to Plate Capacitance

    0.16 pF

    Maximum

  • Grid No.1 Input Capacitance

    14 pF

  • Plate Output Capacitance

    6 pF

Characteristic

  • Typical Plate Supply Voltage

    200 V

    ClassA

  • Typical Screen Supply Voltage

    135 V

    ClassA

  • Plate Current

    30 mA

    ClassA

  • Screen Current

    5.2 mA

    ClassA