BC Components
Product specification
PTC thermistors for degaussing
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.
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.
handbook, halfpage
handbook, halfpage
Dual and Mono cased
145 V to 276 V
MBB633
a. Dual or double mono PTC degaussing.
CCB442
b. Mono PTC degaussing.
Fig.1 Component outlines.
QUICK REFERENCE DATA
PARAMETER
Resistance of degaussing PTC (R
s
) at 25
°C
Standard tolerance on resistance of
degaussing PTC (R
s
) at 25
°C
Resistance of heater PTC (R
p
) at 25
°C
Standard tolerance on resistance of heater
PTC (R
p
) at 25
°C
Maximum AC voltage (RMS value)
Minimum inrush current (peak-to-peak value)
Temperature range (at maximum voltage)
Available pitch:
4e/1e
4e/2e
Standard pin length
Detailed specifications based on
10.16 to 2.54
10.16 to 5.08
4.2
mm
mm
mm
VALUE
3 to 30
20 and 25
3000
75
145 to 276
10 to 30
0 to 60
Ω
%
Ω
%
V
A
°C
UNIT
CECC 44000/IEC 60738
1999 May 17
268
BC Components
Product specification
PTC thermistors for degaussing
INRUSH CURRENT
Dual and Mono cased
145 V to 276 V
handbook, full pagewidth
I
INR
(%)
CCB447
100
80
60
40
20
0
90
110
220
300
V (V
RMS
)
Fig.2 Minimum inrush current as a percentage of mains voltage.
Application specific data
The data shown in Tables 1 to 4 is obtained from measurements at reference parameters. If these parameters do not
correspond to the application parameters required, refer to Figures 7 to 13 in this data handbook, section
“Introduction, PTC thermistors for degaussing”.
1999 May 17
269
BC Components
Product specification
PTC thermistors for degaussing
MECHANICAL DATA
Dual and Mono cased
145 V to 276 V
16.5
±0.5
handbook, full pagewidth
14.1
±0.5
4e/1e pitch
B
A
C
H
±0.4
0.9
±0.1
10.16
±0.508
0.25
±0.05
1.1 max.
2.54
±0.3
5.08
±0.3
5.08
±0.3
2.54
±0.3
(1e)
4.2
±0.3
CCB303
Dimensions in mm.
Low cap (H = 18.4 mm).
High cap (H = 20.5 mm).
For electrical data and ordering information, see Tables 1 and 2.
Fig.3 Dual PTC pin configuration 4e/1e pitch.
16.5
±0.5
handbook, full pagewidth
14.1
±
0.5
4e/2e pitch
B
A
C
5.08
±0.3
(2e)
H
±0.4
0.9
±0.1
4.2
±0.3
1.1 max.
5.08
±0.3
5.08
±0.6
10.16
±0.508
0.25
±0.05
5.08
±0.6
CCB304
Dimensions in mm.
Low cap (H = 18.4 mm).
High cap (H = 20.5 mm).
For electrical data and ordering information, see Tables 1 and 2.
Fig.4 Dual PTC pin configuration 4e/2e pitch.
1999 May 17
270
1999 May 17
272
BC Components
ELECTRICAL DATA AND ORDERING INFORMATION
PTC thermistors for degaussing
Dual range
Table 1
Electrical data and catalogue numbers;
U
R
= 220 to 240 V (RMS).
The shading indicates preferred types.
MAXIMUM
PEAK-TO-PEAK
(1)
RESIDUAL CURRENT
(mA)
after
5s
50
50
80
80
80
80
80
80
80
100
100
100
100
after
30 s
5
5
8
8
8
15
10
10
10
20
40
25
25
after
180 s
2
2
4
2
2
2
4
4
5
5
10
10
10
R
25
(2)
(Ω)
R
coil
(3)(6)
(Ω)
TYPICAL DECAY
PERFORMANCE
CAP
(7)
R
s
30
26
22
22
18
18
14
14
12
12
9
9
7
±%
25
25
25
25
25
25
25
25
20
20
20
20
20
MIN.
17
14
14
10
10
10
10
10
10
10
13
13
20
TYP.
25
17
17
17
13
17
10
10
17
17
20
20
20
DECAY
TIME
(4)(6)
(ms)
60
40
40
65
50
75
40
45
70
80
95
115
100
ALPHA
MAX.
(5)
(%)
36
43
44
33
38
29
45
40
36
30
33
26
33
low
low
low
high
high
high
high
high
high
high
high
high
high
4e/1e pitch
2322 662 96209
2322 662 96211
2322 662 96216
2322 662 96616
2322 662 96624
2322 662 96626
2322 662 96602
2322 662 96642
2322 662 96606
2322 662 96646
2322 662 96608
2322 662 96648
−
4e/2e pitch
2322 662 96309
2322 662 96311
2322 662 96316
2322 662 96716
2322 662 96724
2322 662 96726
2322 662 96702
2322 662 96742
2322 662 96706
2322 662 96746
2322 662 96708
2322 662 96748
2322 662 96709
CATALOGUE NUMBER
(8)
2322 662 .....
MINIMUM
PEAK-TO-PEAK
(1)(6)
INRUSH CURRENT
(A)
11
14
16
16
20
18
25
25
21
21
20
20
21
Notes
1. All peak-to-peak currents are measured at typical resistance of the coil at 220 V, 50 Hz (AC) and at 25
°C.
2. Lower tolerances on resistance of degaussing PTC are available on request.
3. Lower minimum coil resistance is available on request.
4. Decay time is the time from the moment of maximum peak current until the half of the maximum peak inrush current.
5. Alpha maximum is the maximum decrease in current expressed in percent between two successive peaks.
6. Inrush currents and decay times at other voltage coil combinations can be derived from Figures 7 to 13 in this data handbook,
section
“Introduction, PTC thermistors for degaussing”.
7. Low cap: H = 18.4 mm; High cap: H = 20.5 mm.
8. Smallest packaging quantity (SPQ) = 600 units.
Product specification
Dual cased
276 V
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