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Diode (NOT rectifier) ·Diode

4674

Low-capacitance acorn diode designed for high-frequency detector service, using compact construction to minimize anode-cathode capacitance.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
4
Nominal heater
6.3 V / 180 mA

Description

Acorn diode with low anode-cathode capacitance.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
4
Nominal heater voltage
6.3 V
Nominal heater current
180 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

Diode

X-ray radiationInterelectrode capacitances
Max plate voltage
180 V
Rectifier max heater-cathode voltage
100 V

Published Mullard/Ferranti ratings and characteristics promoted where applicable; additional electrical 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

Diode

Capacitance

  • Anode-cathode capacitance

    0.3 pF

Other

  • Anode voltage maximum

    180 V

  • Heater-cathode resistance maximum

    10000 ohm

  • Heater-cathode voltage maximum

    100 V

Application

  • Application

    Acorn diode / high-frequency detector service