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2D13C

Common-cathode double diode for detector and signal rectification in AC/DC and automobile receivers, using a 13 V heater suited to series-string operation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 13 V / 200 mA

Description

Indirectly heated common-cathode double diode for AC/DC receivers and car radio.

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: 13 V
Nominal heater current: 200 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

2 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 200 V
Rectifier peak forward current: 0.8 mA
Rectifier max heater-cathode voltage: 125 V

Two electrically identical diode anodes on a common cathode; represented once under identical-section compression.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Second physical diode section added in approved section-structure reconciliation.

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

Other

Diode anode voltage peak maximum
200 V
Diode current maximum
0.8 mA
Heater-cathode resistance maximum
20000 ohm
Heater-cathode voltage maximum
125 V

Characteristics

Heating time
15 s

Application

Application
Detector / rectifier in AC/DC and car radio

Capacitance

Diode-to-diode capacitance
0.3 pF
Cathode-to-diode 1 capacitance
4.5 pF
Section1
Cathode-to-diode 2 capacitance
4.5 pF
Section2