32ET5

Beam-power pentode designed for AC/DC radio-receiver audio output, using a 32 V, 100 mA series-string heater and low-voltage Class-A operation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7-pin miniature
Socket code: B9A
Base pins: 7
Nominal heater: 32 V / 100 mA

Description

Beam power pentode for AC/DC radio receiver audio output. It uses a nominal 32 V, 0.1 A heater. The supplied datasheet was used for ratings, characteristics, and typical operating data.

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: 7-pin miniature
Socket code: B9A
Base pins: 7
Nominal heater voltage: 32 V
Nominal heater current: 100 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7-pin miniature - 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: 21500 Ω
Transconductance: 0.0044 S
Max plate voltage: 150 V
Max screen voltage: 130 V
Max plate dissipation: 4.4 W
Max screen dissipation: 1.2 W
Rectifier max heater-cathode voltage: 200 V

Published promoted fields populated from Maximum Ratings / Characteristics / Typical Operation headings.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Plate Voltage
110 V
ClassA1
Screen Voltage
110 V
ClassA1
Maximum Signal Power Output
1.2 W
ClassA1

Characteristic

Plate Resistance
21500 ohm
ClassA1
Transconductance
4400 uS
ClassA1

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

Plate Resistance
21500 ohm
Published datasheet value
InterelectrodeCapacitanceDataPublished
1 boolean
See supplied datasheet capacitance table

Other

MaxPlateVoltage
150 V
Published datasheet value
MaxScreenVoltage
130 V
Published datasheet value
MaxPlateDissipation
5.4 W
Published datasheet value
MaxScreenDissipation
1.2 W
Published datasheet value
Heater Voltage
32 V
Nominal heater rating
Heater Current
100 mA
Nominal heater rating