Power NTC Thermistor Thermal Resistor MF72 47D-15 Inrush Current Limiter Disc Thermal Resistor 47 ohm 3Amp 15mm
Description Of Power NTC Thermistor Thermal Resistor
The MF72 seriesPower NTC Thermistor Thermal Resistor provide inrush current suppression for sensitive electronics. Connecting a MF72 in series with the power source will limit the current surges typically created at turn on. Once the circuit is energized the resistance of the MF72 will decrease rapidly to a very low value, power consumption can be ignored and there will be no effect on normal operating current. Using the MF72 Power NTC Thermistor is a most cost-effective way to curb surge current and protect sensitive electronics from damage.
Type designation Of Power NTC Thermistor Thermal Resistor 47D-15 (example)
Characteristics Of Power NTC Thermistor Thermal Resistor 47D-15
Small Size and fast response
High Power handling capability
Fast response to surge current
High material constant (B value)
Low residual resistance
Wide operating temperature range -55 to +200C
R25 allowable tolerance is ±20%
Long-term Stability and Reliability
Application Of Power NTC Thermistor Thermal Resistor 47D-15
Can be installed into the power circuits of:
Power supplies and inverters
Uninterruptible Power Supplies
Energy saving lamps
Electronic Ballasts
Filament Protection of various types of lamps
Some types of heaters
Dimension Of Power NTC Thermistor Thermal Resistor 47D-15 (Unit:mm)
|
Part No./Dim (mm)/Sym
|
Dmax
|
Tmax
|
d
+/- 0.05
Fig. II/I
|
F1
+/-1
Fig. II/I
|
F2
+/-1.5
Fig. II/III
|
Straight Lead Wire
|
Curved Lead Wire
|
|
L1min.
Fig. II/III
|
L1min
|
L2+/-2
|
|
MF72-□D5
|
7
|
5
|
0.6/0.45
|
5/2.5
|
3
|
25 *
|
17/5
|
5
|
|
MF72-□D7
|
9
|
5
|
0.6
|
5
|
3
|
25
|
17/5
|
5
|
|
MF72-□D9
|
11
|
5.5
|
0.8/0.6
|
7.5/5
|
5/3
|
25
|
17/5
|
8
|
|
MF72-□D11
|
13
|
5.5
|
0.8
|
7.5/5
|
5/3
|
25
|
17/5
|
8
|
|
MF72-□D13
|
15.5
|
6
|
0.8
|
7.5
|
5
|
25
|
17/5
|
5
|
|
MF72-□D15
|
17.5
|
6
|
0.8
|
10/7.5
|
5
|
25
|
17/5
|
5
|
|
MF72-□D20
|
22.5
|
7
|
1.0
|
10/7.5
|
/
|
25 *
|
/
|
/
|
|
MF72-□D25
|
27.5
|
8
|
1.0
|
10
|
/
|
25 *
|
/
|
/
|
|
Remark
|
L1min., 17/5 17 indicates the long bent lead wire, 5 indicates the short bent lead wire (Fig. III)
Illustration: In general, the long bent lead wire is used, see figure II
Add suffix "L" + Fig. # to specify optional leads.
* Straight Leads Are Standard
|
Specifications Of TPower NTC Thermistor Thermal Resistor 47D-15
|
Part NO.
|
R25
(Ω)
|
Max.
Steady State Current
(A)
|
Approx.R of Max.Cur
(Ω)
|
Dissi,Coef.
(mW/℃)
|
Thermal time Constant
(S)
|
Max. Load
Capacitance
in uF
|
Operating
Temp.
(℃)
|
|
120 VAC
|
240 VAC
|
|
MF72-5D5
|
5
|
1
|
0.353
|
6
|
20
|
188
|
47
|
-55 to +200
|
|
MF72-10D5
|
10
|
0.7
|
0.771
|
6
|
20
|
188
|
47
|
|
MF72-60D5
|
60
|
0.3
|
1.878
|
6
|
18
|
188
|
47
|
|
MF72-200D5
|
200
|
0.1
|
18.70
|
6
|
18
|
88
|
22
|
|
MF72-5D7
|
5
|
2
|
0.283
|
10
|
30
|
224
|
56
|
|
MF72-8D7
|
8
|
1
|
0.539
|
9
|
28
|
224
|
56
|
|
MF72-10D7
|
10
|
1
|
0.616
|
9
|
27
|
224
|
56
|
|
MF72-12D7
|
12
|
1
|
0.816
|
9
|
27
|
224
|
56
|
|
MF72-16D7
|
16
|
0.7
|
1.003
|
9
|
27
|
224
|
56
|
|
MF72-22D7
|
22
|
0.6
|
1.108
|
9
|
27
|
224
|
56
|
|
MF72-33D7
|
33
|
0.5
|
1.485
|
10
|
28
|
188
|
47
|
|
MF72-200D7
|
200
|
0.2
|
11.65
|
11
|
28
|
188
|
47
|
|
MF72-3D9
|
3
|
4
|
0.120
|
11
|
35
|
272
|
68
|
|
MF72-4D9
|
4
|
3
|
0.190
|
11
|
35
|
272
|
68
|
|
MF72-5D9
|
5
|
3
|
0.210
|
11
|
34
|
272
|
68
|
|
MF72-6D9
|
6
|
2
|
0.315
|
11
|
34
|
272
|
68
|
|
MF72-8D9
|
8
|
2
|
0.400
|
11
|
32
|
400
|
100
|
|
MF72-10D9
|
10
|
2
|
0.458
|
11
|
32
|
400
|
100
|
|
MF72-12D9
|
12
|
1
|
0.652
|
11
|
32
|
400
|
100
|
|
MF72-16D9
|
16
|
1
|
0.802
|
11
|
31
|
400
|
100
|
|
MF72-20D9
|
20
|
1
|
0.864
|
11
|
30
|
600
|
150
|
|
MF72-22D9
|
22
|
1
|
0.950
|
11
|
30
|
600
|
150
|
|
MF72-30D9
|
30
|
1
|
1.022
|
11
|
30
|
600
|
150
|
|
MF72-33D9
|
33
|
1
|
1.124
|
11
|
30
|
600
|
150
|
|
MF72-50D9
|
50
|
1
|
1.252
|
11
|
30
|
600
|
150
|
|
MF72-60D9
|
60
|
0.8
|
1.502
|
11
|
30
|
600
|
150
|
|
MF72-80D9
|
80
|
0.8
|
2.010
|
11
|
30
|
272
|
68
|
|
MF72-120D9
|
120
|
0.8
|
3.015
|
11
|
30
|
272
|
68
|
|
MF72-200D9
|
200
|
0.5
|
5.007
|
11
|
32
|
188
|
47
|
|
MF72-400D9
|
400
|
0.2
|
30.30
|
11
|
32
|
188
|
47
|
|
MF72-2.5D11
|
2.5
|
5
|
0.095
|
13
|
43
|
600
|
150
|
|
MF72-3D11
|
3
|
5
|
0.100
|
13
|
43
|
600
|
150
|
|
MF72-4D11
|
4
|
4
|
0.150
|
13
|
44
|
600
|
150
|
|
MF72-5D11
|
5
|
4
|
0.156
|
13
|
45
|
600
|
150
|
|
MF72-6D11
|
6
|
3
|
0.240
|
13
|
45
|
800
|
220
|
|
MF72-8D11
|
8
|
3
|
0.255
|
14
|
47
|
800
|
220
|
|
MF72-10D11
|
10
|
3
|
0.275
|
14
|
47
|
800
|
220
|
|
MF72-12D11
|
12
|
2
|
0.462
|
14
|
48
|
800
|
220
|
|
MF72-16D11
|
16
|
2
|
0.470
|
14
|
50
|
800
|
220
|
|
MF72-20D11
|
20
|
2
|
0.512
|
15
|
52
|
800
|
220
|
|
MF72-22D11
|
22
|
2
|
0.563
|
15
|
52
|
800
|
220
|
|
MF72-30D11
|
30
|
1.5
|
0.667
|
15
|
52
|
800
|
220
|
|
MF72-33D11
|
33
|
1.5
|
0.734
|
15
|
52
|
800
|
220
|
|
MF72-50D11
|
50
|
1.5
|
1.021
|
15
|
52
|
800
|
220
|
|
MF72-60D11
|
60
|
1.5
|
1.215
|
15
|
52
|
800
|
220
|
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