5659

Beam-power amplifier pentode related to the 12A6, designed for reliable operation under severe vibration and intermittent duty while providing Class-A power output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 7
Nominal heater: 12.6 V / 150 mA

Description

The 5659 is a beam-power amplifier pentode similar to the 12A6 and designed for reliable performance under severe vibration and intermittent operation.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 7
Nominal heater voltage: 12.6 V
Nominal heater current: 150 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: 70000 Ω
Transconductance: 0.003 S
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 7.5 W
Max screen dissipation: 1.5 W

Design-center maxima and Class-A 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

Characteristic

Zero-Signal Plate Current
30 mA
ClassA
Power Output
3.4 W
ClassA