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

Voltage Pentode ·Pentode

4328D

Professional 4328-family carrier-frequency pentode designed for dependable telecommunications amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX6
Base pins
6
Nominal heater
7.5 V / 425 mA

Description

Printed companion designation 4328D for carrier pentode family covering 5A136A/5A136D and 4328A/4328D.

Socket description

Small 6-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX6
Base pins
6
Nominal heater voltage
7.5 V
Nominal heater current
425 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
Transconductance
0.002 S
Max plate voltage
250 V
Max screen voltage
180 V
Max cathode current
7.5 mA

Ratings and characteristics extracted from 5A136A.pdf.

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Curren

    425 mA

  • Nominal voltage

    7.5 v

  • Grid to Anode

    0.03 pF

  • OQutpu

    14 pF

  • Maximum direct anode voltage

    250 v

  • Maximum direct anode curren

    75 mA

  • Maximum direct screen voltage

    180 v

  • Maximum direct screen cyrren

    2.5 mA

  • June 1946

    5 A

  • (4328D)

    4328 A

  • BASING

    4328 A

  • June 1946

    5 A

Characteristic

  • ;‘Ict:zl::ll c?ilziductance Va250V Vg,

    180 V