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

Specialized - Cathode Ray ·CathodeRay

A66120X

Large rectangular color television picture tube using multiple electron beams and a shadow-mask tricolor phosphor-dot screen. Its magnetic deflection and high-voltage direct-view construction are designed specifically for color receiver service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B12F
Base pins
-
Nominal heater
6.3 V / 900 mA

Description

ITT-Picture Tube A 66-120 X is a rec- 1. Generalities tangular colour picture tube with 90° deflec- Builb All-Glass Type The useful screen area of 2030 cm? (appr.) Rectangular mission of 52 % (appr.). Screen Dimensions Horizontal 518 mm The phosphor screen is composed of Vertical 390 mm emitting phosphor dot. The green- and Deflection Angles Diagonal a0°

Socket description

All-glass CRT 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B12F
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
900 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.

CRT section. Maximum ratings, operating conditions, capacitances, optical and mechanical values are preserved as parameters where published.

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

1976 ITT Picture Tubes

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • tion angle and

    38.5 mm

  • The useful screen area of

    2030 cm

  • has nearly straight sides of 52 x

    33 cm

  • Minimum Useful Diagonal

    618 mm

  • mission of 52 % (appr.). Screen Dimensions Horizontal

    518 mm

  • The phosphor screen is composed of Vertical

    390 mm

  • each consisting of a red-, green- and blue- _ Area (approx.)

    2030 cm

  • Neck Diameter

    36.5 mm

  • Weight

    21 kg

  • Ur @

    63 V

  • Ty 0 (approx.)

    900 mA

  • Ygigsa =L

    2 k

  • Ygigsa =L __ 2k lor (~Uqr = (2)

    150 V

  • Ugg

    42 to 50 kV

  • a3 max

    6 kV

  • UQZ_ B max

    1 kV

  • (_b_':g__'l) p max

    400 V

  • (_Ugi) max

    200 V

  • u~-fik max 1

    410 V

  • Published value

    250 V

  • Published value

    300 V

  • Published value

    180 V

  • 180 V nearest cetnre of screen (2)

    0.81 mm

Capacitance

  • Ugz cutort @ @ ~

    210 to 495 V

  • at (Ugq)

    105 V

  • ("‘Ugi} cutaff @

    70 to 140 V

  • ("‘Ugi} cutaff @ 70...140 V el approx. (2)

    7 pF

  • aL_U_gQ =

    300 V

  • Ck _ approx.

    5 pF

  • i| R approx.

    7 pF

  • max 3SE

    2500 pF

  • min

    2000 pF

  • U9495_a_ max @

    27.5 KV

  • U9495_a_ max @ 27,5 KV CodgSa/m’ ___approx. (2)

    500 pF

  • a4g

    5 a

  • a4g5a min (2)

    20 kV

  • Igag

    5 a

  • Igag5a max & (2)

    1 mA