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

Power - TV Horizontal Output (sweep) ·BeamPower

6JS6A

Improved-knee Compactron beam-power pentode designed for television horizontal-deflection output service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
12FY
Socket code
B12C
Base pins
12
Nominal heater
6.3 V / 2.25 A

Description

The Westinghouse 6JS6A is a beam-power pentode for television horizontal-deflection output service.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
12FY
Socket code
B12C
Base pins
12
Nominal heater voltage
6.3 V
Nominal heater current
2.25 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12FY - 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

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
5600 Ω
Transconductance
0.0113 S
Amplification factor
3
Max plate voltage
990 V
Max screen voltage
190 V
Max plate dissipation
28 W
Max screen dissipation
5.5 W
Max cathode current
315 mA

Published ratings/characteristics promoted from supplied source; additional conditions retained in parameter table.

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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Heater Voltage

    6.3 V

  • Heater Current

    2.25 A

  • Grid1 To Plate Capacitance

    0.7 pF

  • Input Capacitance

    24 pF

  • Output Capacitance

    10 pF

  • Plate Resistance Approximate

    5600 ohm

  • Transconductance

    11300 uS

  • TriodeAmplificationFactor

    3

Other

  • Peak Positive Pulse Plate Voltage

    17500 V

    HorizontalDeflection

  • Peak Negative Pulse Plate Voltage

    1100 V

    HorizontalDeflection

  • PositiveDCBeamPlateVoltage

    270 V

  • Screen Voltage Maximum

    190 V

  • Plate Dissipation Maximum

    28 W

  • Screen Dissipation Maximum

    5.5 W

  • DCCathodeCurrentMaximum

    315 mA

  • PeakCathodeCurrentMaximum

    1100 mA

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    2.25 A

  • Zero-Bias Plate Voltage

    62 V

  • Zero-Bias Screen Voltage

    125 V

  • Zero-Bias Plate Current

    570 mA

  • Zero-Bias Screen Current

    34 mA

  • Triode Amplification Factor

    3 ratio

    ScreenTiedToPlate

Other

  • Maximum DC Plate Supply Voltage

    770 V

    HorizontalDeflection

  • Maximum Peak Positive Plate Voltage

    6500 V

    Pulse

  • Maximum Peak Negative Plate Voltage

    1500 V

    Pulse

  • Maximum Plate Dissipation

    30 W

  • Maximum Screen Voltage

    220 V

  • Maximum Screen Dissipation

    3.5 W

  • Maximum Average Cathode Current

    300 mA

  • Maximum Peak Cathode Current

    900 mA