PL6569

Penta high-mu power triode designed particularly for grounded-grid RF amplification. Multi-kilovolt plate capability, moderate dissipation, and low capacitances provide useful power gain for professional transmitting equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: GIANT5
Base pins: -
Nominal heater: 5 V / 14.5 A

Description

The Penta PL6569 is a 250 w high-mu power triode for grounded-grid rf amplifier service.

Socket description

Giant 5-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: GIANT5
Base pins: -
Nominal heater voltage: 5 V
Nominal heater current: 14.5 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

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0045 S
Amplification factor: 45
Max plate voltage: 4000 V
Max plate dissipation: 250 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

Triode

Characteristic

Heater/filament voltage
5 V
Heater/filament current
14.5 A
Amplification factor
45
Transconductance
4500 uS

Other

Maximum plate voltage
4000 V
Maximum plate dissipation
250 W
Source language
English
Grounded-grid power gain
10 x

Capacitance

Grid-plate capacitance
7.6 pF
Input capacitance
3.7 pF
Output capacitance
0.1 pF

Application

Primary application
250 W high-mu power triode for grounded-grid RF amplifier service.

Construction

Cooling
Radiation/convection or source-specific
Electrode structure
Triode