DD4

Cossor double diode intended for receiving-equipment detector and rectifier applications, with two diode sections in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar

Description

DD4: Cossor double diode. The complete Cossor sheet was read for construction, technical data, operating recommendations, and application notes.

Medium 7-contact

General specifications

Properties common to every published source and operating point.

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

2 physical sections, each with unique specifications.

Section 1

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published ratings/characteristics promoted from the approved datasheet.

Section 2

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

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

Source-dependent data

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

Published operating points and test conditions from this source.

SECTION 1