TEF6

Automotive high-frequency pentode intended for RF and IF amplifier stages. Tungsram documentation identifies it specifically for car-radio signal amplification, combining high-frequency service with automotive equipment requirements.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

Automotive high-frequency pentode intended for radio-frequency and intermediate-frequency amplifier stages.

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: 2500000 Ω
Transconductance: 0.002 S
Max plate voltage: 250 V
Max screen voltage: 125 V
Max plate dissipation: 1 W
Max screen dissipation: 0.3 W

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

195X Tunsgram

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

Heater or filament voltage
6.3 V
Published nominal value
Heater or filament current
200 mA
Published nominal value
Transconductance
2000 µS
Published operating characteristic

Other

Maximum plate dissipation
1 W
Published maximum rating