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7189A

Power-amplifier pentode for audio-frequency output stages in television, radio, and high-fidelity amplifiers, with higher screen-voltage capability than the 7189.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9LE
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 760 mA

Description

The 7189-A is a power-amplifier pentode for audio-frequency output stages in television and radio receivers and high-fidelity amplifiers, with a higher screen-voltage rating than the 7189.

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: 9LE
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 760 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9LE - 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: 40000 Ω
Transconductance: 0.0113 S
Amplification factor: 19.5
Max plate voltage: 440 V
Max screen voltage: 400 V
Max plate dissipation: 13.2 W
Max screen dissipation: 2.2 W

Design-maximum ratings and average characteristics promoted.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Plate Voltage
250 V
ClassA
Screen Voltage
250 V
ClassA
Power Output
5.7 W
ClassA
Power Output
24 W
PushPull;ClassAB;TwoTubes