RE125A

Directly heated 125-watt beam tetrode for push-pull audio, RF power-amplifier, and oscillator service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 5
Nominal heater: 5 V / 6.6 A

Description

Directly heated 125 W beam tetrode for AF push-pull, RF power-amplifier and oscillator service; the sheet also identifies electrically equivalent RE125AB with a shifted operating point.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 5
Nominal heater voltage: 5 V
Nominal heater current: 6.6 A
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

Max plate voltage: 3000 V
Max screen voltage: 600 V
Max plate dissipation: 125 W
Max screen dissipation: 20 W

Power transmitting section. Values promoted from the supplied source; threshold/range qualifiers are retained in parameter rows where applicable.

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

Control-grid input capacitance
12 pF
Published interelectrode capacitance
Plate output capacitance
3.7 pF
Published interelectrode capacitance
Plate-to-control-grid capacitance maximum
0.1 pF
Published interelectrode capacitance

Other

Maximum frequency
100 MHz
Published maximum/rated frequency