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

Specialized - Cathode Ray ·CathodeRay

5AQP1

Five-inch cathode-ray instrument display tube documented by manufacturer data for type 5AQP1, intended for waveform or measurement presentation with purpose-specific phosphor and beam-control characteristics.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DIHEPTAL12
Base pins
12
Nominal heater
6.3 V / 600 mA

Description

5-inch electrostatic-focus and electrostatic-deflection cathode-ray tube with high sensitivity and precision deflection characteristics.

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
600 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
Max plate voltage
4400 V

CRT electron-gun/display section; CRT-specific ratings and operating data are stored 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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Heater Current . 6.3 Volts

    6.3 V

    Heater Current . 6.3 Volts

  • Minimum Anode No. 2 Voltage (SAQP-B Only) 4400 Volts dc

    4400 V

    Minimum Anode No. 2 Voltage (SAQP-B Only) 4400 Volts dc

  • Anode No. 1 Voltage . . .. . 1500 Volts dc

    1500 V

    Anode No. 1 Voltage . . .. . 1500 Volts dc

  • Grid No. 1 Voltage

    1 V

    Grid No. 1 Voltage

  • AnodeNo.2Voltage . . . . . . . .. ... 2500 Volts dc

    2500 V

    AnodeNo.2Voltage . . . . . . . .. ... 2500 Volts dc

  • Anode No. 1 Voltage for Focus . . . . . . . . . .. ... ... .. .... 0 to 300 Volts dc

    300 V

    Anode No. 1 Voltage for Focus . . . . . . . . . .. ... ... .. .... 0 to 300 Volts dc

  • Grid No. 1 Voltage Required for Cutoff® . . . . . . . . . .. ... . .... —34 t0 ~56 Volts dc

    56 V

    Grid No. 1 Voltage Required for Cutoff® . . . . . . . . . .. ... . .... —34 t0 ~56 Volts dc

  • - The product of Anode No. 2 voltage and average Anode No. 2 current should be limited 1o 6.0 watts.

    6 W

    - The product of Anode No. 2 voltage and average Anode No. 2 current should be limited 1o 6.0 watts.

Other

  • Maximum Anode No. 2 Voltage? . . . . . . .

    2 V

    Maximum Anode No. 2 Voltage? . . . . . . .

Data set 02

1960 Du Mont

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    1 code

    Electrostatic

  • Deflection method

    1 code

    Electrostatic

  • Deflection factor D1-D2

    -

    Published range 40 to 50 V/in

  • Deflection factor D3-D4

    -

    Published range 31.5 to 38.5 V/in

  • Minimum useful screen

    41 in

Other

  • Accelerator voltage maximum

    4000 V

  • Accelerator voltage

    2500 V

  • Grid No. 1 voltage

    -

    Published range -56 to -34 V

  • Grid No. 1 negative bias maximum

    200 V

Capacitance

  • Cathode to all other electrodes

    2.7 pF

    Approximate or first published bound

  • Grid No. 1 to all other electrodes

    37 pF

    Approximate or first published bound

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Electrostatic

  • Heater voltage

    6.3 V

  • Heater current

    600 mA

  • Fluorescence

    Green

  • Persistence

    Medium

  • Deflection factor D1-D2

    40 to 50 V/in

  • Deflection factor D3-D4

    31.5 to 38.5 V/in

  • Modulation maximum

    40 V

  • Line width maximum

    0.03 in

  • Useful scan minimum

    4 x 4 in

  • Pattern distortion at 100% useful scan maximum

    2 %

  • P1 light output minimum

    15 foot-lambert

Construction

  • Phosphor

    P1

  • Faceplate construction

    Clear

Application

  • Application

    Oscilloscope / instrument / special-purpose display

Other

  • Anode-2 voltage maximum

    4400 V

  • Anode-1 focus voltage maximum

    1650 V

  • Grid-1 negative-bias maximum

    -220 V

  • Grid-1 positive-bias maximum

    0 V

  • Peak heater-cathode voltage maximum heater negative

    200 V

  • Peak heater-cathode voltage maximum heater positive

    200 V

  • Peak anode-2 to deflection-plate voltage maximum

    400 V

  • Typical anode-2 voltage

    2500 V

  • Typical focus voltage range

    0 to 300 V

  • Grid cutoff range

    -34 to -56 V

  • Anode-2 current maximum

    400 uA

  • Grid-1 circuit resistance maximum

    1.5 Mohm

  • Deflection-circuit resistance maximum

    1 Mohm