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

Power - Pentode Single (NOT beam) (under 10W) ·Pentode

PEN4VA

Power/output pentode designed for audio-frequency output amplification in receiver or push-pull amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
4 V / 1.35 A

Description

High-output pentode for AC mains receivers.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
4 V
Nominal heater current
1.35 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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
40000 Ω
Transconductance
0.0028 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
9 W
Max screen dissipation
1.5 W
Max cathode current
50 mA

Published Mullard ratings, characteristics, capacitances, and operating data promoted where applicable; additional values retained as parameters.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Plate current

    36 mA

    ClassA

  • Screen current

    3 mA

    ClassA

  • Optimum load

    6000 ohm

    ClassA

  • Audio output at 10% distortion

    3.8 W

    ClassA

  • Cathode-bias resistance

    500 ohm

    ClassA

  • Grid resistance maximum self-bias

    0.7 Mohm

  • Grid resistance maximum fixed-bias

    0.3 Mohm

  • Heater-cathode voltage maximum

    50 V