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PDF 232266296xxx Data sheet ( Hoja de datos )
| Número de pieza | 232266296xxx | |
| Descripción | PTC Thermistors | |
| Fabricantes | Vishay Siliconix | |
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2322 662www.DataSheet4U.com 96...
Vishay BCcomponents
PTC Thermistors For Degaussing,
Dual, Mono And Double Mono Cased
a. Dual or double mono
PTC degaussing.
MBB633
FEATURES
• Residual currents as low as 2 mA (p-p), ideal for
high-resolution displays
• Long decay time
• Stable performance over a long time (>20000 operations)
• Self-extinguishing white plastic case (“UL 94.V.0” )
• Design-in support available.
b. Mono PTC
degaussing.
CCB442
QUICK REFERENCE DATA
PARAMETER
Resistance of degaussing PTC (Rs) at
25 °C
Standard tolerance on resistance of
degaussing PTC (Rs) at 25 °C
Resistance of heater PTC (Rp) at 25 °C
Standard tolerance on resistance of
heater PTC (Rp) at 25 °C
Maximum AC voltage (RMS value)
VALUE
3 to 30
UNIT
Ω
20 and 25 %
3 000
Ω
75 %
145 to 276 V
Minimum inrush current (peak-to-peak
value)
Temperature range (at maximum voltage)
10 to 30
0 to 60
A
°C
Available pitch:
4e/1e
10.16 to 2.54 mm
4e/2e
10.16 to 5.08 mm
Standard pin length
4.2 mm
Detailed specifications based on
CECC 44000/
IEC 60738
APPLICATIONS
• Colour televisions
• Colour monitors.
DESCRIPTION
For good picture definition, colour televisions and monitors
must be degaussed by a strong alternating magnetic field
which gradually and symmetrically decays to a small value of
residual current. This can be achieved by connecting a PTC
thermistor in the degaussing circuit.
The new generation of flat-screen, high-definition colour
televisions and monitors require an excellent picture quality
with high colour purity. This can only be achieved by a dual
PTC device housing two PTC thermistors in intimate thermal
contact, one being used to heat the other and so further
reduce the residual current.
www.vishay.com
184
For technical questions contact: [email protected]
Document Number: 29077
Revision: 10-Oct-03
1 page  
2322 662www.DataSheet4U.com 96...
Vishay BCcomponents
PTC Thermistors For Degaussing,
Dual, Mono And Double Mono Cased
PIN CONFIGURATIONS
CONNECTION
Mains
Coil(s)
MEASURING CIRCUITS
MONO
point
A
point
B
Vmains
B Rs
A
+T
Rc ±2%
V
Vmains
a. Mono cased PTC degaussing.
CCB456
B Rs1
C
+T
Rs2
+T A
Rc ±2%
V
CCB458
c. Double mono cased PTC degaussing.
PRODUCT TYPE
DUAL
points
A and B
points
A and B
DOUBLE MONO
point
B
points
A and C
Vmains
B
+T Rp
Rs
+T
C
Rc ±2%
V
A
b. Dual cased PTC degaussing.
CCB457
V = A/D converter or oscilloscope.
Rs = resistance of series PTC or degaussing PTC.
Rp = resistance of parallel PTC or heater PTC.
Rc = replaces the degaussing coil.
Vmains = AC power source with high output current
capability; frequency = 50 Hz ±1%; total harmonic
distortion < 2%.
For residual current measurement the Rc resistor can be
increased to 100 Ω 1%, 30 s after inrush.
CONSTRUCTION
The dimensions of the ceramic are just for reference and
might vary according to the PTC degaussing type.
MONO CASED PTC DEGAUSSING
Pitch 4e
2
32
5
5
3
CCB448
1
3
Mono cased PTC degaussing.
3
DOUBLE MONO CASED PTC DEGAUSSING
DUAL CASED PTC DEGAUSSING
2
Pitch 4e/1e
52
4
3
6
5
4
3
6
CCB449
1
34
2
Pitch 4e/2e
343
4
5
3
6
CCB450
1
34
Dual cased PTC degaussing.
2
Pitch 4e/2e
CCB452
Double mono cased PTC degaussing.
3
3
5
1
4
www.vishay.com
188
For technical questions contact: [email protected]
Document Number: 29077
Revision: 10-Oct-03
5 Page | ||
| Páginas | Total 8 Páginas | |
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