E3F

Versatile Philips pentode for RF, IF, audio-frequency, oscillator, frequency-converter, and detector service. Its unusually broad documented application range allows it to perform most major small-signal functions in a radio receiver.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: P8A
Base pins: 8
Nominal heater: 6.3 V / 200 mA

Description

E3F is a universal pentode for hf, if, lf, oscillator, converter and detector service. The supplied Philips datasheet was read for heater data, construction, ratings, characteristic constants, operating conditions, and capacitances where published.

Socket description

European 8-pin side-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: P8A
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 200 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: 900000 Ω
Transconductance: 0.0024 S
Max plate voltage: 200 V
Max screen voltage: 100 V

Universal pentode for HF, IF, LF, oscillator, converter and detector service

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

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Typical plate current
4.5 mA
HFIFAmplifier
Typical screen current
1.5 mA
HFIFAmplifier

Characteristic

Anode-grid capacitance
0.005 pF
Maximum