DL167

Subminiature output pentode designed for hearing aids and other very-low-power audio equipment. Its tiny filament demand and compact construction provide useful low-frequency output from miniature battery supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 1.25 V / 13.3 mA

Description

Subminiature output pentode for hearing aids and other very-low-power audio equipment.

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: 1.25 V
Nominal heater current: 13.3 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: 0.0004 S
Max plate voltage: 45 V
Max screen voltage: 45 V
Max plate dissipation: 0.025 W
Max screen dissipation: 0.006 W
Max cathode current: 0.6 mA

Published ratings and characteristics promoted from the printed technical data.

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

Other

HeaterVoltageNominal
1.25 V
Nominal
HeaterCurrentNominal
13.3 mA
Nominal
Maximum Plate Voltage
45 V
Maximum Screen Voltage
45 V
Maximum Plate Dissipation
0.025 W
Maximum Screen Dissipation
0.006 W
Maximum Cathode Current
0.6 mA