Production Introduction
The MF72 power NTC thermistor is a kind of semiconductor ceramic element that mostly made from transition metal OXID material, and belongs to negative temperature thermistors. When you tune on an electrical equipment ,the surge current can be restrained by a power NTC thermistor connected in series with the power circuit .Because of the continuing action of current, temperatue of power NTC thermistor raising, the resistance will rapidly drop to a small value, the consumed power can be ignored. So it can not affect mormal operating current. Therefore, using power NTC thermistor is a most effectively amd most brief measure to restrain surge current, protecting electrical equipment from destruction.
APPLICATION
Comversion power supply , switch power , kinds of electric heater , electronic energy-saving lamps , electronic ballast etc . All kinds of power circuit protection of electronic equipments , filament protection of all kinds of RT , display , bulb and other lighting lamps .
Characteristics
1. Small size , Strong power and strong capability of surge current protection.
2. Fast response to surge current.
3. Big material constant(B value), Small remain resistance.
4. Longevity of service, High reliability.
5. Integral series , Extensive operating range
Production Sign Explain
Remark:
1. The Max. Steady State Current meets when the decimal expressed with three figures.
Other expressed with the actual value.
2.The Rated Zero-power Resistance meets the decimal or is bigger than is 100Ω when with three expressions, other expressed with two.
Shapec Structure Picture
Main Parameter and Dimensions
型号
Type |
额定阻值(Ω)
Rated Resistance |
最大稳态电流(A)
Max. Steady State Current |
|
|
Dimensions(Unit:mm) |
Dmax |
Lmin |
F±1 |
Tmax |
d |
5D-5 |
5 |
1 |
6.5 |
25 |
5.0/2.5 |
5 |
0.55/0.45 |
10D-5 |
10 |
0.7 |
6.5 |
25 |
5.0/2.5 |
5 |
0.55/0.45 |
20D-5 |
20 |
0.5 |
6.5 |
25 |
5.0/2.5 |
5 |
0.55/0.45 |
5D-7 |
5 |
2 |
8.5 |
25 |
5.0 |
5 |
0.55 |
8D-7 |
8 |
1 |
8.5 |
25 |
5.0 |
5 |
0.55 |
10D-7 |
10 |
1 |
8.5 |
25 |
5.0 |
5 |
0.55 |
12D-7 |
12 |
1 |
8.5 |
25 |
5.0 |
5 |
0.55 |
16D-7 |
16 |
0.7 |
8.5 |
25 |
5.0 |
5 |
0.55 |
20D-7 |
20 |
0.6 |
8.5 |
25 |
5.0 |
5 |
0.55 |
22D-7 |
22 |
0.6 |
8.5 |
25 |
5.0 |
5 |
0.55 |
33D-7 |
33 |
0.5 |
8.5 |
25 |
5.0 |
5 |
0.55 |
3D-9 |
3 |
4 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
4D-9 |
4 |
4 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
5D-9 |
5 |
3 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
6D-9 |
6 |
2 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
8D-9 |
7 |
2 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
10D-9 |
10 |
2 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
12D-9 |
12 |
1 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
16D-9 |
16 |
1 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
20D-9 |
20 |
1 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
22D-9 |
22 |
1 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
30D-9 |
30 |
1 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
33D-9 |
33 |
1 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
50D-9 |
50 |
1 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
60D-9 |
60 |
0.8 |
10.5 |
25 |
7.5/5.0 |
5.5 |
0.78/0.55 |
2.5D-11 |
2.5 |
5 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
3D-11 |
3 |
5 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
4D-11 |
4 |
4 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
5D-11 |
5 |
4 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
6D-11 |
6 |
3 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
8D-11 |
8 |
3 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
10D-11 |
10 |
3 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
12D-11 |
12 |
2 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
16D-11 |
16 |
2 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
20D-11 |
20 |
2 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
22D-11 |
22 |
2 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
30D-11 |
30 |
1.5 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
33D-11 |
33 |
1.5 |
12.5 |
25 |
7.5/5.0 |
5.5 |
0.78 |
1.3D-13 |
1.3 |
7 |
14.5 |
25 |
7.5 |
6 |
0.78 |
1.5D-13 |
1.5 |
6 |
14.5 |
25 |
7.5 |
6 |
0.78 |
3D-13 |
3 |
6 |
14.5 |
25 |
7.5 |
6 |
0.78 |
4D-13 |
4 |
5 |
14.5 |
25 |
7.5 |
6 |
0.78 |
5D-13 |
5 |
5 |
14.5 |
25 |
7.5 |
6 |
0.78 |
6D-13 |
6 |
4 |
14.5 |
25 |
7.5 |
6 |
0.78 |
7D-13 |
7 |
4 |
14.5 |
25 |
7.5 |
6 |
0.78 |
8D-13 |
8 |
4 |
14.5 |
25 |
7.5 |
6 |
0.78 |
10D-13 |
10 |
4 |
14.5 |
25 |
7.5 |
6 |
0.78 |
12D-13 |
12 |
3 |
14.5 |
25 |
7.5 |
6 |
0.78 |
15D-13 |
15 |
3 |
14.5 |
25 |
7.5 |
6 |
0.78 |
16D-13 |
16 |
3 |
14.5 |
25 |
7.5 |
6 |
0.78 |
20D-13 |
20 |
3 |
14.5 |
25 |
7.5 |
6 |
0.78 |
30D-13 |
30 |
2.5 |
14.5 |
25 |
7.5 |
6 |
0.78 |
47D-13 |
47 |
2 |
14.5 |
25 |
7.5 |
6 |
0.78 |
1.3D-15 |
1.3 |
8 |
16.5 |
25 |
7.5 |
6 |
0.78 |
1.5D-15 |
1.5 |
8 |
16.5 |
25 |
7.5 |
6 |
0.78 |
3D-15 |
3 |
7 |
16.5 |
25 |
7.5 |
6 |
0.78 |
5D-15 |
5 |
6 |
16.5 |
25 |
7.5 |
6 |
0.78 |
6D-15 |
6 |
5 |
16.5 |
25 |
7.5 |
6 |
0.78 |
7D-15 |
7 |
5 |
16.5 |
25 |
7.5 |
6 |
0.78 |
8D-15 |
8 |
5 |
16.5 |
25 |
7.5 |
6 |
0.78 |
10D-15 |
10 |
5 |
16.5 |
25 |
7.5 |
6 |
0.78 |
12D-15 |
12 |
4 |
16.5 |
25 |
7.5 |
6 |
0.78 |
15D-15 |
15 |
4 |
16.5 |
25 |
7.5 |
6 |
0.78 |
16D-15 |
16 |
4 |
16.5 |
25 |
7.5 |
6 |
0.78 |
20D-15 |
20 |
4 |
16.5 |
25 |
7.5 |
6 |
0.78 |
30D-15 |
30 |
3 |
16.5 |
25 |
7.5 |
6 |
0.78 |
33D-15 |
33 |
3 |
16.5 |
25 |
7.5 |
6 |
0.78 |
47D-15 |
47 |
3 |
16.5 |
25 |
7.5 |
6 |
0.78 |
50D-15 |
50 |
3 |
16.5 |
25 |
7.5 |
6 |
0.78 |
0.7D-20 |
0.7 |
12 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
1.3D-20 |
1.3 |
9 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
2.2D-20 |
2.2 |
8 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
2.5D-20 |
2.5 |
8 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
3D-20 |
3 |
8 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
5D-20 |
5 |
7 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
6D-20 |
6 |
6 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
8D-20 |
8 |
6 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
10D-20 |
10 |
6 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
12D-20 |
12 |
5 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
16D-20 |
16 |
5 |
21.5 |
25 |
10/7.5 |
7 |
1.0 |
3D-25 |
3 |
9 |
26.5 |
25 |
10/7.5 |
8 |
1.0 |
5D-25 |
5 |
8 |
26.5 |
25 |
10/7.5 |
8 |
1.0 |
8D-25 |
8 |
7 |
26.5 |
25 |
10/7.5 |
8 |
1.0 |
10D-25 |
10 |
7 |
26.5 |
25 |
10/7.5 |
8 |
1.0 |
Remark: Unless the particular indication , the allowable tolerance of Rated Zero-power Resistance is ±20%. |
