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

Specialized - Cathode Ray ·CathodeRay

D1321BE

Philips or Telefunken D-series cathode-ray instrument tube designed for oscillographic and measurement display, with manufacturer-defined electrostatic beam control, deflection, screen, and accelerating characteristics for type D1321BE.

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

Description

D1321BE is a Philips high-frequency high-writing-speed metal-backed oscilloscope CRT. The supplied datasheet provides electrostatic-deflection, focusing, acceleration, screen and operating characteristics.

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
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.

Electrostatic focusing/deflection CRT section; electrical/screen/deflection data retained in parameter rows.

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 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

  • Screen fluorescence

    Blue

    Screen

  • Screen phosphorescence

    Blue

    Screen

  • Screen persistence

    Medium short

    Screen

  • Horizontal deflection factor

    27 to 33 V/cm

    OscilloscopeCRT

  • Vertical deflection factor

    5.7 to 7.1 V/cm

    OscilloscopeCRT

Other

  • Post-accelerator voltage

    10 kV

    OscilloscopeCRT

  • Isolation-shield voltage

    1670 V

    OscilloscopeCRT

  • Deflection-plate shield voltage

    1670 V

    OscilloscopeCRT

  • Second-accelerator voltage

    1670 V

    OscilloscopeCRT

  • Focusing-electrode voltage

    180 to 590 V

    OscilloscopeCRT

  • First-accelerator voltage

    1670 V

    OscilloscopeCRT

  • Grid No.1 voltage

    -50 to -80 V

    OscilloscopeCRT

  • Maximum horizontal linearity deviation

    1.5 %

    OscilloscopeCRT

  • Maximum vertical linearity deviation

    1 %

    OscilloscopeCRT

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Horizontal deflection coefficient

    19.8 V/cm

  • Vertical deflection coefficient

    7.1 V/cm

Other

  • Final/accelerator voltage

    10000 V

  • Focusing electrode voltage

    180 to 590 V

  • First accelerator voltage

    1670 V

  • Screen dissipation maximum

    3 mW/cm2

Capacitance

  • Grid

    6.4 pF

  • Cathode

    3.9 pF

  • except

    3 pF

  • except

    3 pF

  • except

    2.8 pF

  • except

    2.8 pF

  • X1

    1.9 pF

  • ¥¢

    1.5 pF