32E

Directly heated battery RF pentode designed for radio-frequency amplification in portable receiving equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: IO
Base pins: 7
Nominal heater: 2 V / 60 mA

Description

Directly heated battery RF pentode.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: IO
Base pins: 7
Nominal heater voltage: 2 V
Nominal heater current: 60 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

Plate resistance: 1000000 Ω
Transconductance: 0.0006 S
Max plate voltage: 180 V
Max screen voltage: 90 V

Brimar 32E directly heated battery RF pentode with 2.0 V, 0.06 A filament. Published typical operating conditions: anode voltage 135 V, screen voltage 67.5 V, control-grid bias −3 V, anode current 1.7 mA, screen current 0.4 mA, mutual conductance 0.6 mA/V (0.0006 S), and anode impedance approximately 1.0 MΩ. These operating values do not constitute independent absolute maximum ratings. The manufacturer specifies a U.X. base, while existing database basing is recorded as seven-pin IO; basing reconciliation is deferred pending separate confirmation.

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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

HeaterOrFilamentVoltage
2 V
HeaterOrFilamentCurrent
60 mA