Features
Applications
■ Power Over Ethernet (IEEE 802.3 af) port
■ Very low profile
■ High voltage
protection
■ Firewire and i.Link IEEE 1394 port
protection
■ Automotive electronic control module
protection
■ Telecom equipment low voltage
protection
■ Lead-free construction
■ Symmetrical
■ 2018 footprint
■ Agency recognition pending
MF-SMDF Series - PTC Resettable Fuses
Electrical Characteristics
Tripped
Power
Dissipation
Max. Time
To Trip
I
I
trip
Resistance
hold
V max.
Volts
I max.
Amps
Model
Amperes
at 23 °C
Ohms
Amperes Seconds
Watts
at 23 °C
at 23 °C
at 23 °C
at 23 °C
R
R
Hold
0.30
0.55
1.10
1.50
1.50
2.00
Trip
Min.
1Max.
2.250
0.950
0.390
0.175
0.175
0.095
Typ.
0.7
1.0
1.1
1.2
1.2
1.3
MF-SMDF030
MF-SMDF050
MF-SMDF100
MF-SMDF150
MF-SMDF150/33
MF-SMDF200
60
60
15
15
33
10
20
10
40
40
40
40
0.80
1.20
2.20
3.00
3.00
4.10
0.450
0.200
0.100
0.070
0.070
0.048
1.5
2.5
8.0
8.0
8.0
8.0
1.5
4.0
0.5
0.9
0.9
2.7
Environmental Characteristics
Operating Temperature ......................................-40 °C to +85 °C
Maximum Device Surface Temperature
in Tripped State ................................................125 °C
Passive Aging......................................................+85 °C, 1000 hours .................................... 5 ꢀ typical resistance change
Humidity Aging....................................................+85 °C, 85 ꢀ R.H. 1000 hours .................. 5 ꢀ typical resistance change
Thermal Shock....................................................+85 °C to -40 °C, 20 times ........................ 10 ꢀ typical resistance change
Solvent Resistance ............................................MIL-STD-202, Method 215 ........................No change
Vibration..............................................................MIL-STD-883C, Method 2007.1, ................No change
Condition A
Test Procedures And Requirements For Model MF-SMDF Series
Test
Test Conditions
Accept/Reject Criteria
Visual/Mech.....................................Verify dimensions and materials ....................................Per MF physical description
Resistance ......................................In still air @ 23 °C............................................................Rmin ≤ R ≤ R1max
Time to Trip ....................................At specified current, Vmax, 23 °C ..................................T ≤ max. time to trip (seconds)
Hold Current ..................................30 min. at Ihold ..............................................................No trip
Trip Cycle Life ................................Vmax, Imax, 100 cycles..................................................No arcing or burning
Trip Endurance................................Vmax, 48 hours ..............................................................No arcing or burning
Solderability ....................................ANSI/J-STD-002 ............................................................95 ꢀ min. coverage
Thermal Derating Chart - I / I (Amps)
hold trip
Ambient Operating Temperature
23 ˚C 40 ˚C 50 ˚C
Model
-40 ˚C
-20 ˚C
0 ˚C
60 ˚C
70 ˚C
85 ˚C
MF-SMDF030
MF-SMDF050
MF-SMDF100
MF-SMDF150
MF-SMDF150/33
MF-SMDF200
0.48 / 0.96 0.42 / 0.84 0.35 / 0.70 0.30 / 0.60 0.24 / 0.48 0.21 / 0.42 0.17 / 0.34 0.15 / 0.30 0.10 / 0.20
0.86 / 1.72 0.77 / 1.54 0.70 / 1.40 0.55 / 1.10 0.48 / 0.96 0.43 / 0.86 0.38 / 0.76 0.36 / 0.72 0.26 / 0.52
1.59 / 3.18 1.43 / 2.86 1.20 / 2.40 1.10 / 2.20 0.94 / 1.88 0.85 / 1.70 0.72 / 1.44 0.69 / 1.38 0.57 / 1.14
2.21 / 4.42 1.97 / 3.94 1.70 / 3.40 1.50 / 3.00 1.26 / 2.52 1.15 / 2.30 1.00 / 2.00 0.91 / 1.82 0.73 / 1.46
2.21 / 4.42 1.97 / 3.94 1.70 / 3.40 1.50 / 3.00 1.26 / 2.52 1.15 / 2.30 1.00 / 2.00 0.91 / 1.82 0.73 / 1.46
2.81 / 5.62 2.54 / 5.08 2.27 / 4.54 2.00 / 4.00 1.73 / 3.46 1.59 / 3.18 1.46 / 2.92 1.32 / 2.64 1.12 / 2.24
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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