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Power - TV Horizontal Output (sweep) ·BeamPower

12JT6A

Beam-power tube for television horizontal-deflection output, combining approximately 17.5 W plate dissipation with low plate resistance and high pulse-voltage capability.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9QU
Socket code
B9E
Base pins
9
Nominal heater
12.6 V / 600 mA

Description

Beam-power tube used as a horizontal-deflection amplifier in television receivers.

Socket description

Novar 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9QU
Socket code
B9E
Base pins
9
Nominal heater voltage
12.6 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9QU - 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
15000 Ω
Transconductance
0.007 S
Amplification factor
4.4
Max plate voltage
770 V
Max screen voltage
220 V
Max plate dissipation
17.5 W
Max screen dissipation
3.5 W
Max cathode current
175 mA

Published electrical data extracted from the approved RCA source; pulse-only ratings are retained in parameter rows rather than promoted as continuous ratings.

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

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater voltage

    12.6 V

  • Heater current

    600 mA

  • Maximum DC plate voltage

    770 V

    HorizontalDeflection

  • Peak positive-pulse plate voltage

    6500 V

    HorizontalDeflection

  • Maximum screen voltage

    220 V

    HorizontalDeflection

  • Average cathode current

    175 mA

    HorizontalDeflection

  • Plate dissipation

    17.5 W

  • Heater warm-up time

    11 s

    ControlledWarmup

Characteristic

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    150 V

    ClassA

  • Plate current

    70 mA

    ClassA

  • Plate resistance

    15000 ohm

    ClassA

  • Transconductance

    7000 uS

    ClassA

Capacitance

  • Grid-to-plate capacitance

    0.26 pF

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater Voltage (ac/dc) 6.3 12.6

    16.8 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Heater Current 1.2 0.6

    450 mA

    Published in approved 17JT6A target datasheet entry; Section1

  • Heater Warm-up Time (Average) — 11

    11 seconds

    Published in approved 17JT6A target datasheet entry; Section1

  • DC Plate Supply Voltage

    770 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Peak Positive-Pulse Plate Voltage*

    6500 V

    Published in approved 17JT6A target datasheet entry; Section1

  • DC Grid-No.3 Voltage*

    70 V

    Published in approved 17JT6A target datasheet entry; Section1

  • DC Grid-No.2 Voltage

    220 V

    Published in approved 17JT6A target datasheet entry; Section1

  • DC Grid-No.l Voltage, Negative-bias value

    65 V

    Published in approved 17JT6A target datasheet entry; Section1

  • 6RID -No

    2 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Peak Cathode Current

    550 mA

    Published in approved 17JT6A target datasheet entry; Section1

  • Average Cathode Current

    175 mA

    Published in approved 17JT6A target datasheet entry; Section1

  • Plate Dissipationf

    17.5 W

    Published in approved 17JT6A target datasheet entry; Section1

  • Grid-No.2 Input

    3.5 W

    Published in approved 17JT6A target datasheet entry; Section1

  • Grid-No.l-Circuit Resistance, for grid-resistor-bias operation

    1 MΩ

    Published in approved 17JT6A target datasheet entry; Section1

  • # Pulse duration must not exceed 15% of a horizontal seal (

    10 microseconds

    Published in approved 17JT6A target datasheet entry; Section1

  • may occur in television receivers. A typical value for this voltage is

    30 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Heater Voltage (ac/dc) 6.3

    10.2 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Heater Current 0.725

    450 mA

    Published in approved 17JT6A target datasheet entry; Section1

  • Heater Warm-up Time (Average)

    11 seconds

    Published in approved 17JT6A target datasheet entry; Section1

  • Plate Voltage

    330 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value

    0 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Plate Dissipation

    4 W

    Published in approved 17JT6A target datasheet entry; Section1

Capacitance

  • Grid No.l to Plate

    0.26 pF

    Published in approved 17JT6A target datasheet entry; Section1

  • Grid No.l to Cathode, Heater, Grid No.2, and Grid Nc 3

    15 pF

    Published in approved 17JT6A target datasheet entry; Section1

  • Plate to Cathode, Heater, Grid No.2, and Grid No.3

    6.5 pF

    Published in approved 17JT6A target datasheet entry; Section1

Characteristic

  • Plate Voltage 60 250

    150 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Voltage 150 150

    150 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage 0 —22.5

    -22.5 V

    Published in approved 17JT6A target datasheet entry; Section1

  • Plate Resistance (Approx.)

    15000 Ω

    Published in approved 17JT6A target datasheet entry; Section1

  • Transconductance

    7100 µS

    Published in approved 17JT6A target datasheet entry; Section1

  • Plate Current 390

    70 mA

    Published in approved 17JT6A target datasheet entry; Section1

  • Grid-No.2 Current 32

    2.1 mA

    Published in approved 17JT6A target datasheet entry; Section1

  • 1 mA —

    -42 V

    Published in approved 17JT6A target datasheet entry; Section1