CANTHERM
    Inrush Current Limiters (ICL)  
 

 


    Thermostats
Creep / Snap Action Thermostats
Hi Temp Thermostats
Control Thermostats
Adjustable Thermostats

Thermal Cutouts
1/2" Disc Bimetal Cutouts
Probes
Thermistors
Thermal Fuses
Inrush Current Limiters (ICL)
Heater Protection

Buy Online

 
    • Company
    • Contact Us
    • FAQ's
    • Intl. Approvals
    • Home

      Français



 High Power Inrush Current Limiter      Download PDF

MF73T-1
High Power Inrush Current Limiter NTC Thermistor

 Application
• High power switching power supplies, Power conversion, UPS power.
• High power battery charger, electric vehicle battery charger.
• High power LED light, high power electronic energy saving lamps and other lamps.

Characteristics
• Small size, high power, reliable surge current protection.
• High material constant (B value),
• Low residual resistance
• High steady state current, long lasting, high reliability
• Convenient for PCB installation, wide operating range

RoHS Compliant
Specification
Dimensions
 
D15
D20
D25
D30
D35
  
Chip Dimensions
ø 15
ø 20
ø 25
ø 30
ø 35
(Dmax)
Overall Diameter (mm)
17.5
22.5
29
36
41
(Tmax)
Thickness (mm)
6
7
8
8.5
10
(F ± 1.5)
Pitch (mm)
7.5
10.0
10.0
10.0
* 18
18
 > Add suffix
“Pxx” to specify the Pitch (F) or

> “Dxx” for Diameter of the leads (d)
(d ± 0.05)
Dia of Leads (mm)
0.8
1.0
1.0
1.2
* 1.6
1.8
* 2.0
(L) min
Length of Leads (mm)
25
25
25
25
25
  
(L1) min
Length of Leads (mm)
17
17
17
 
 
Standard Leads
Figure
(I)
Inside kink
(II)
Straight
(II)
Straight
(II)
Straight
(II)
Straight
> Add suffix “L” + figure # to
part number to specify optional leads
Optional Leads
Figure
(II)
Straight
(III)
Outside kink
(III)
Outside kink
Weight (g).
Approx
3.1
6.2
8.8
20.5
28.8
  

    Illustration:In general, the long bent lead wire is used, see figure II      *  Standard


Technical Specifications
Working Temperature: -55~200†C

Part NO.
MF73T-1
Res +20%
(Ω)
Max. Steady
State Current
lmax (A)
Approx. R
of MaxCurrent
Rmax (Ω)
ø15mm Chip Diameter
Max Rated Power Pmax (W): 3.5
Dissipation Coefficient (mW/†C): ≥ 22
Thermal Time Constant (S): ≤ 75
1.3/10
1.3
10
0.034
1.5/10
1.5
10
0.036
2.5/9.5
2.5
9.5
0.044
5/8
5
8
0.058
6/7
6
7
0.069
7/7
7
7
0.078
8/7
8
7
0.084
10/7
10
7
0.098
12/6
12
6
0.116
15/6
16
6
0.129
20/6
20
6
0.136
30/5
30
5
0.165
47/4
47
4
0.257
120/2.5
120
2.5
0.652

 

Part NO.
MF73T-1
Res +20%
(Ω)
Max. Steady
State Current
lmax (A)
Approx. R
of MaxCurrent
Rmax (Ω)
ø20mm Chip Diameter
Max Rated Power Pmax (W): 5.0
Dissipation Coefficient (mW/†C): ≥ 28
Thermal Time Constant (S): ≤ 110
0.7/16
0.7
16
0.026
1/16
1
16
0.027
1.5/15
1.5
15
0.030
2/14
2
14
0.035
2.5/13
2.5
13
0.038
3/12
3
12
0.040
4/12
4
12
0.043
4.7/12
4.7
12
0.046
5/12
5
12
0.047
6/11
6
11
0.052
6.8/10
6.8
10
0.055
7/9
7
9
0.056
10/8
10
8
0.085
12/7.5
12
7.5
0.098
15/7
15
7
0.112
18/7
18
7
0.123
20/7
20
7
0.132

 

Part NO.
MF73T-1
Res +20%
(Ω)
Max. Steady
State Current
lmax (A)
Approx. R
of MaxCurrent
Rmax (Ω)
ø25mm Chip Diameter
Max Rated Power Pmax (W): 7.0
Dissipation Coefficient (mW/†C): ≥ 30
Thermal Time Constant (S): ≤ 130
0.5/22
0.5
22
0.017
0.7/22
0.7
22
0.017
1/20
1
20
0.021
1.5/19
1.5
19
0.024
2/18
2
18
0.026
2.5/16
2.5
16
0.029
3/15.5
3
15.5
0.032
4/15
4
15
0.039
4.7/14
4.7
14
0.044
5/14
5
14
0.047
6.8/12
6.8
12
0.061
7/11
7
11
0.064
8/10
8
10
0.079
10/10
10
10
0.084
12/9
12
9
0.102
15/8
15
8
0.117
18/8
18
8
0.132
20/8
20
8
0.132

 

Part NO.
MF73T-1
Res +20%
(Ω)
Max. Steady
State Current
lmax (A)
Approx. R
of MaxCurrent
Rmax (Ω)
ø30mm Chip Diameter
Max Rated Power Pmax (W): 8.0
Dissipation Coefficient (mW/†C): ≥ 40
Thermal Time Constant (S): ≤ 190
0.5/30
0.5
30
0.013
1/30
1
30
0.014
1.5/25
1.5
25
0.016
2/23
2
23
0.019
2.5/20
2.5
20
0.023
3/19.5
3
19.5
0.026
4/19
4
19
0.031
4.7/18
4.7
18
0.035
5/17
5
17
0.037
6.8/16
6.8
16
0.043
7/15
7
15
0.044
8/14
8
14
0.049
10/13
10
13
0.056
12/12
12
12
0.067
15/11
15
11
0.078
18/10
18
10
0.092
29/9
20
9
0.113

 

Part NO.
MF73T-1
Res +20%
(Ω)
Max. Steady
State Current
lmax (A)
Approx. R
of MaxCurrent
Rmax (Ω)
ø35mm Chip Diameter
Max Rated Power Pmax (W): 9.0
Dissipation Coefficient (mW/†C): ≥ 55
Thermal Time Constant (S): ≤ 280
0.5/32
0.5
32
0.01
1/32
1
32
0.011
1.5/28
1.5
28
0.013
2/25
2
25
0.017
2.5/23
2.5
23
0.020
3/22
3
22
0.023
4/21
4
21
0.026
4.7/20
4.7
20
0.029
5/19
5
19
0.030
6.8/18
6.8
18
0.035
7/17
7
17
0.037
8/16
8
16
0.041
10/15
10
15
0.045
12/14
12
14
0.051
15/13
15
13
0.060
18/11
18
11
0.072
20/10
20
10
0.089

 

> Site : eRGB 
CANTHERM
(800) 561-7207 | sales@cantherm.com
Canadian Thermostats & Control Devices Ltd.