12JM6

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

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9E
Base pins: 9
Nominal heater: 12.6 V / 600 mA

Description

Beam-power horizontal-output pentode for television horizontal-deflection amplifier service.

Socket description

Novar 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
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

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: 18000 Ω
Transconductance: 0.0073 S
Max plate voltage: 770 V
Max plate dissipation: 17.5 W
Max cathode current: 550 mA
Rectifier warm-up time: 11 s

Published ratings/characteristics promoted where applicable; additional operating data retained in TUBE_SECTION_PARAMETER.

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

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Peak positive plate voltage
6500 V
Pulse
Peak negative pulse plate voltage
1500 V
Pulse
Positive DC beam-plate voltage
70 V
Peak cathode current
550 mA

Characteristics

Plate voltage
250 V
Control-grid voltage
-22.5 V
Transconductance
7300 uS
Plate resistance
18000 Ohm