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

Specialized - Cathode Ray ·CathodeRay

5DQP2

Five-inch P2 cathode-ray instrument tube for oscillograph or measurement display, with manufacturer-specified focusing, deflection, accelerating voltages, and phosphor characteristics for precision waveform presentation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DIHEPTAL12
Base pins
12
Nominal heater
6.3 V / 300 mA

Description

Five-inch flat-face oscilloscope tube with single-gun electrostatic focusing/deflection and post-acceleration for high deflection sensitivity.

Socket description

Medium-shell Diheptal 12-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
DIHEPTAL12
Base pins
12
Nominal heater voltage
6.3 V
Nominal heater current
300 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

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

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

1961 Matsushita

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Accelerator voltage maximum

    - to 2100 V

  • Post-accelerator voltage maximum

    - to 12000 V

  • Accelerator input maximum

    - to 6 W

  • Typical post-accelerator voltage

    10000 V

  • Typical accelerator voltage

    1670 V

  • Grid No. 3 focusing voltage

    180 to 590 V