AL860

Output pentode designed for either radio-frequency or audio-frequency amplification. Its power-capable construction supports load-driving service across both RF and low-frequency applications.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 2.4 V / 560 mA

Description

Output pentode for radio-frequency or audio-frequency amplification.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 2.4 V
Nominal heater current: 560 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

Pentode

X-ray radiationInterelectrode capacitances

Transconductance: 0.006 S
Max plate voltage: 200 V
Max screen voltage: 150 V
Max plate dissipation: 7.5 W
Max screen dissipation: 1.5 W
Max cathode current: 50 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when 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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

Heater or filament voltage
2.4 V
Published nominal value
Heater or filament current
560 mA
Published nominal value
Transconductance
6000 µS
Published operating characteristic