MF72
Power NTC Thermistor
MF72
Specification
NTC Thermistors 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.
Power NTC Thermistor.
The MF72 series Power
Dimensions (mm)
Add suffix “L” + Fig. #
to specify optional leads.
Part No. /
Dim(mm) / Sym
Dmax
7
9
11
13
15.5
17.5
22.5
27.5
Tmax
5
5
5.5
5.5
6
6
7
8
d
+/- 0.05
Fig. II / I
F1
+/-1
Fig. II / I
F2
+/-1.5
Fig. II / I
Straight
Lead Wire
Lmin.
25
*
25
25
25
25
25
25
*
25
*
Curved Lead Wire
b
17/5
17/5
17/5
17/5
17/5
17/5
/
/
L2+/-2
8/5
8/5
8/5
8/5
8/5
8/5
/
/
A
+/-.5
1.65
1.9
2.3
2.6
2.6
2.8
3.5
3.5
MF72-
❏D5
MF72-
❏D7
MF72-
❏D9
MF72-
❏D11
MF72-
❏D13
MF72-
❏D15
MF72-
❏D20
MF72-
❏D25
Remark
0.6 / 0.45
0.6
0.8 / 0.6
0.8
0.8
0.8
1.0
1.0
5 / 2.5
5
7.5 / 5
7.5 / 5
7.5
10 / 7.5
10 / 7.5
10
3
3
5/3
5/3
5
5
/
/
b, 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
*
Straight Leads are Standard
Application
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
• For higher power circuits ask about the MF73
and MF74 series surge suppressors.
Characteristics
• 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
• UL 1434 File# E241319
• CQC File# 04001010556
Main Techno-Parameter
Operating Temperature:
-55 to 200ºC
Part No.
MF72-5D5
MF72-10D5
MF72-60D5
MF72-200D5
MF72-5D7
MF72-8D7
MF72-10D7
MF72-12D7
MF72-16D7
MF72-22D7
MF72-33D7
MF72-200D7
MF72-3D9
MF72-4D9
MF72-5D9
MF72-6D9
MF72-8D9
MF72-10D9
MF72-12D9
MF72-16D9
MF72-20D9
MF72-22D9
MF72-30D9
MF72-33D9
MF72-50D9
MF72-60D9
MF72-80D9
Max.
Steady
State
Current
(A)
Approx.
R of Max.
Current
(Ω)
Dissip.
Coef.
(mW/ºC)
Thermal
Time
Constant
(S)
Max.
Load
Capacitance
in uF
120 VAC
240 VAC
Max.
Steady
State
Current
(A)
Approx.
R of Max.
Current
(Ω)
Dissip.
Coef.
(mW/ºC)
Thermal
Time
Constant
(S)
Max.
Load
Capacitance
in uF
120 VAC
240 VAC
R25
(Ω)
UL
Part No.
MF72-120D9
MF72-200D9
MF72-400D9
MF72-2.5D11
MF72-3D11
MF72-4D11
MF72-5D11
MF72-6D11
MF72-8D11
MF72-10D11
MF72-12D11
MF72-16D11
R25
(Ω)
UL
5
10
60
200
5
8
10
12
16
22
33
200
3
4
5
6
8
10
12
16
20
22
30
33
50
60
80
1
0.7
0.3
0.1
2
1
1
1
0.7
0.6
0.5
0.2
4
3
3
2
2
2
1
1
1
1
1
1
1
0.8
0.8
0.353
0.771
1.878
18.70
0.283
0.539
0.616
0.816
1.003
1.108
1.485
11.65
0.120
0.190
0.210
0.315
0.400
0.458
0.652
0.802
0.864
0.950
1.022
1.124
1.252
1.502
2.010
6
6
6
6
10
9
9
9
9
9
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
20
20
18
18
30
28
27
27
27
27
28
28
35
35
34
34
32
32
32
31
30
30
30
30
30
30
30
188
188
188
88
224
224
224
224
224
224
188
188
272
272
272
272
400
400
400
400
600
600
600
600
600
600
272
47
47
47
22
56
56
56
56
56
56
47
47
68
68
68
68
100
100
100
100
150
150
150
150
150
150
68
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
120
200
400
2.5
3
4
5
6
8
10
12
16
20
22
30
33
50
60
80
1.3
1.5
2.5
3
4
5
6
7
0.8
0.5
0.2
5
5
4
4
3
3
3
2
2
2
2
1.5
1.5
1.5
1.5
1.2
7
7
6
6
5
5
4
4
3.015
5.007
30.30
0.095
0.100
0.150
0.156
0.240
0.255
0.275
0.462
0.470
0.512
0.563
0.667
0.734
1.021
1.215
1.656
0.062
0.073
0.088
0.092
0.120
0.125
0.170
0.188
11
11
11
13
13
13
13
13
14
14
14
14
15
15
15
15
15
15
15
13
13
13
14
15
15
15
15
30
32
32
43
43
44
45
45
47
47
48
50
52
52
52
52
52
52
52
60
60
60
60
67
68
65
65
272
188
188
600
600
600
600
880
880
880
880
880
880
880
880
880
880
880
600
880
880
880
880
880
880
880
1320
68
47
47
150
150
150
150
220
220
220
220
220
220
220
220
220
220
220
150
220
220
220
220
220
220
220
330
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
MF72-20D11
MF72-22D11
MF72-30D11
MF72-33D11
MF72-50D11
MF72-60D11
MF72-80D11
MF72-1.3D13
MF72-1.5D13
MF72-2.5D13
MF72-3D13
MF72-4D13
MF72-5D13
MF72-6D13
MF72-7D13
Main Techno-Parameter
(cont.)
Operating Temperature:
-55 to 200ºC
Max.
Steady
State
Current
(A)
Approx.
R of Max.
Current
(Ω)
Dissip.
Coef.
(mW/ºC)
Thermal
Time
Constant
(S)
Max.
Load
Capacitance
in uF
120 VAC
240 VAC
Max.
Steady
State
Current
(A)
Approx.
R of Max.
Current
(Ω)
Dissip.
Coef.
(mW/ºC)
Thermal
Time
Constant
(S)
Max.
Load
Capacitance
in uF
120 VAC
240 VAC
Part No.
MF72-8D13
MF72-10D13
MF72-12D13
MF72-15D13
MF72-16D13
MF72-20D13
MF72-30D13
MF72-47D13
MF72-120D13
MF72-1.3D15
MF72-1.5D15
MF72-3D15
MF72-5D15
MF72-6D15
MF72-7D15
MF72-8D15
MF72-10D15
MF72-12D15
MF72-15D15
MF72-16D15
MF72-20D15
MF72-30D15
R25
(Ω)
UL
Part No.
MF72-47D15
MF72-120D15
MF72-0.7D20
MF72-1.3D20
MF72-3D20
MF72-5D20
MF72-6D20
MF72-8D20
MF72-10D20
MF72-12D20
MF72-16D20
MF72-0.7D25
MF72-1.5D25
MF72-3D25
MF72-5D25
MF72-8D25
MF72-10D25
MF72-12D25
MF72-16D25
R25
(Ω)
UL
8
10
12
15
16
20
30
47
120
1.3
1.5
3
5
6
7
8
10
12
15
16
20
30
4
4
3
3
3
3
2.5
2
1.2
8
8
7
6
5
5
5
5
4
4
4
4
3.5
0.194
0.206
0.316
0.335
0.338
0.372
0.517
0.810
2.124
0.048
0.052
0.075
0.112
0.155
0.173
0.178
0.180
0.250
0.268
0.276
0.288
0.438
15
15
16
16
16
16
16
17
16
18
19
18
20
20
20
20
20
20
21
21
17
18
60
65
65
60
60
65
65
65
65
68
69
76
76
80
80
80
75
75
85
70
86
75
1320
1320
1320
1320
1320
1320
1320
880
880
1320
1320
1320
1880
1880
1880
1880
1880
1880
1880
1880
1880
1320
330
330
330
330
330
330
330
220
220
330
330
330
470
470
470
470
470
470
470
470
470
330
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
47
120
0.7
1.3
3
5
6
8
10
12
16
0.7
1.5
3
5
8
10
12
16
3
1.8
11
9
8
7
6
6
6
5
5
12
10
9
8
7
7
6
6
0.680
1.652
0.018
0.037
0.055
0.087
0.113
0.142
0.162
0.195
0.212
0.014
0.027
0.044
0.070
0.114
0.130
0.156
0.160
21
22
25
24
24
23
25
25
24
24
25
30
30
32
32
33
32
32
35
86
87
89
88
88
87
103
105
102
100
100
120
121
124
125
125
125
126
126
1320
1320
1880
1880
1880
2240
2240
2240
2240
2720
2720
2240
2240
2240
2720
2720
2720
3280
3280
330
330
470
470
470
560
560
560
560
680
680
560
560
560
680
680
680
820
820
√
√
√
√
√
√
√
√
√
√
√
Note: Unless otherwise specified, the allowable tolerance of R is +/- 20%
25
Specifications may change without notice.
C
US
8415 Mountain Sights Avenue • Montreal (Quebec), H4P 2B8, Canada
Tel:
(514) 739-3274 • 1-800-561-7207 •
Fax:
(514) 739-2902 •
E-mail:
sales@cantherm.com
Website:
www.cantherm.com
| Division of Microtherm
2012/Nov MF72
京公网安备 11010802033920号
EEWORLD
