Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Beam (NOT sweep) ·Tetrode

PL8165

Quick-heating 65-watt power tetrode designed for RF and audio amplification and modulator service, suitable for rapid-start transmitting equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
SEPTAR5
Base pins
5
Nominal heater
6 V / 3.5 A

Description

The Penta PL8165 is a quick-heating 65 w power tetrode for rf/audio amplifier and modulator service.

Socket description

Septar 5-contact transmitting-tube base family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
SEPTAR5
Base pins
5
Nominal heater voltage
6 V
Nominal heater current
3.5 A
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

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.004 S
Amplification factor
5
Max plate voltage
3000 V
Max screen voltage
600 V
Max plate dissipation
65 W
Max grid dissipation
5 W

Highest reliable published rating promoted; additional values and operating/application details retained as parameter rows.

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

1965 Penta Labs Power Tubes

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Heater/filament voltage

    6 V

  • Heater/filament current

    3.5 A

  • Amplification factor

    5

  • Transconductance

    4000 uS

  • Quick-heating filament

    Yes

Other

  • Maximum plate voltage

    3000 V

  • Maximum screen voltage

    600 V

  • Maximum plate dissipation

    65 W

  • Maximum control-grid dissipation

    5 W

  • Source language

    English

  • Maximum frequency at full input

    150 MHz

Capacitance

  • Grid-plate capacitance

    0.08 pF

  • Input capacitance

    7.5 pF

  • Output capacitance

    2.2 pF

Application

  • Primary application

    Quick-heating 65 W power tetrode for RF/audio amplifier and modulator service.

Construction

  • Cooling

    Radiation/convection or source-specific

  • Electrode structure

    Tetrode