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A66140X

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 / 730 mA

Description

ITT-Picture Tube A 66—140X (A 686—410 X) 1. Generalities is a rectangular colour picture tube with Bulb All-Glass Type with 110° deflection angle and 36,5 mm neck dia- Convex Rectangular meter. The useful screen area of 2030 cm? Faceplate mission of 52% (appr.). Screen Dimensions Harizontal 518 mm The phosphor screen is composed of tri- Vertical 390 mm

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: 730 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

110° deflection angle and
36.5 mm
meter. The useful screen area of
2030 cm
terglass of the faceplate has a light trans- Minimum Useful Diagonal
618 mm
mission of 52% (appr.). Screen Dimensions Harizontal
518 mm
The phosphor screen is composed of tri- Vertical
390 mm
consisting of a red-, green- and blue- Area (approx.)
2030 cm
phor is composed of yitrium compounds Neck Diameter
36.5 mm
2ight
20 kg
Heating Time @
5 s
3. Maximum Ratings Codgbalm min
2000 pF
CadgSalm ' approx.
500 pF
UgdgSa max_@ 27r
5 kV
Ug4g§a min
20 kV
Igdgﬁa max @
110 mA
Ug_z_p max - - 1’
0 kV
(-=Ua1) o max
400 V
Uik max1@ @ A
0 V
U-trc max2 @@
250 V
U-trc max2 @@ 250V nearest centre of screen (2)
0.81 mm
U-tticp max. ®
300 V
Usittkn mex @ _1
180 V
Uik max @
135 V

CircuitDesignRatings

0@ ]
63 V
0@ ] 63V lga S £ (2)
150 A
s AB6-410 X ~ (approx.)
730 mA
s AB6-410 X ~ (approx.) 0,730 A lo1 (=Ug1 = (2)
150 V
Ugtgsa E
25 kV

Capacitance

Uss
42 to 50 kV
at (~Up)=
10 v
Published value
210 to 495 V
Ca1 approx.
7 pF
Cxk B approx.
5 pF
(-Ug1) cutoti @
70 to 140 V
(-Ug1) cutoti @ 70...140V Cg3 . approx. (2)
7 pF
at -Ugz =
300 V
Cgdgha/m max =
2500 pF