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|
1.Introduction
An NTC thermistor has to be connected in series to the power
source circuit to avoid the surge current at the instant when
the electronic circuits are turned on. The device can
effectively suppress the surge current, and its resistance and
power consumption can be greatly reduced after that through the
continuous effect of the current so as not to affect the normal
work current. Therefore the Power NTC thermistor is the most
convenient and efficient instrument to curb the surge current
and protect the electronic devices from being damaged.
2.
Applications
Applicable to the protection of the power circuits of conversion
power supply, switching power supply, UPS power supply, electric
heaters, electronic energy-saving lamps, electronic ballasts and
other electronic devices, and the filament protection of color
picture tubes, incandescent lamps and other lights.
3.Characteristics:
·Small size,Strong power and strong capability of surge current
protection.
·Characteristics Fast response to the rapidly surge.
·Big material constant(B value),Small remain resistance.
·Longevity of service,High reliability.
·Integral series,Extensive operating range.
4.Specification Marking:
5.Dimensions:(mm)
|
（mm）/Sym
|
D
+2
-1
|
Tmax
|
d±0.05
|
F1±1
|
F2±1.5
|
Straight
Lead Wire
|
Curved
Lead Wire
|
|
Lmin
|
b
L1min
|
L2±2
|
|
CYX-□D5
|
6.5
|
5
|
0.6/0.45
|
5/2.5
|
3
|
25
|
17/5
|
8
|
|
CYX-□D7
|
8.5
|
5
|
0.6
|
5
|
3
|
25
|
17/5
|
8
|
|
CYX-□D9
|
10.5
|
5.5
|
0.8/0.6
|
7.5/5
|
5/3
|
25
|
17/5
|
8
|
|
CYX-□D11
|
12.5
|
5.5
|
0.8/0.6
|
7.5/5
|
5/3
|
25
|
17/5
|
8
|
|
CYX-□D13
|
14.5
|
6
|
0.8
|
7.5
|
5
|
25
|
17/5
|
8
|
|
CYX-□D15
|
16.5
|
6
|
0.8
|
10/7.5
|
5
|
25
|
17/5
|
8
|
|
CYX-□D20
|
21.5
|
7
|
1.0
|
10/7.5
|
/
|
25
|
/
|
/
|
|
CYX-□D25
|
26.5
|
8
|
1.0
|
10
|
/
|
25
|
/
|
/
|
|
Remark
|
a、□means
rated zero-power resistance
b
、17/5
17 show the long bend tead wire 5 shows the short
bend lead wire.
|
|
| Illustration:In
general,the long bend lead wire is used,name shape is II.
6.Main
Tech-Parameter
|
|
Code
NO.
|
R25
（Ω）
|
Max.Steady
State Current
（A）
|
Approx.R
of Max.Cur
（Ω）
|
Dissi,Coef.
（mW/℃）
|
Thermal
time Constant
（S）
|
|
CYX-5D5
|
5
|
1
|
0.353
|
6
|
20
|
|
CYX-10D5
|
10
|
0.7
|
0.771
|
6
|
20
|
|
CYX-60D5
|
60
|
0.5
|
1.878
|
6
|
18
|
|
CYX-200D5
|
200
|
0.1
|
6.259
|
6
|
18
|
|
CYX-5D7
|
5
|
2
|
0.283
|
10
|
30
|
|
CYX-8D7
|
8
|
1
|
0.539
|
9
|
28
|
|
CYX-10D7
|
10
|
1
|
0.616
|
9
|
27
|
|
CYX-12D7
|
12
|
1
|
0.816
|
9
|
27
|
|
CYX-16D7
|
16
|
0.7
|
1.003
|
9
|
27
|
|
CYX-22D7
|
22
|
0.6
|
1.108
|
9
|
27
|
|
CYX-33D7
|
33
|
0.5
|
1.485
|
10
|
28
|
|
CYX-200D7
|
200
|
0.2
|
6.233
|
11
|
28
|
|
CYX-3D9
|
3
|
4
|
0.120
|
11
|
35
|
|
CYX-4D9
|
4
|
3
|
0.190
|
11
|
35
|
|
CYX-5D9
|
5
|
3
|
0.210
|
11
|
34
|
|
CYX-6D9
|
6
|
2
|
0.315
|
11
|
34
|
|
CYX-8D9
|
8
|
2
| | |
