MF-SMHT136 Datasheet, PDF (1/4 Pages) Bourns Electronic Solutions – MF-SMHT Series - PTC Resettable Fuses

*RoHS ^COMPLIANT
143A6
Features
■ Operating temperature range up to 125 °C
■ Low thermal derating factor
■ Higher hold currents at elevated
temperature
■ Choice of operating currents
■ RoHS compliant*
Applications
■ Protection of automotive circuitry
including engine control modules
■ Overcurrent surge protection of electronic
equipment required to operate at high
operating temperature ranges
■ Resettable fault protection of general
electronic equipment
MF-SMHT Series - PTC Resettable Fuses
Electrical Characteristics
Model
V max.
Volts
I max.
Amps
MF-SMHT136
16
100
MF-SMHT160
16
100
Ihold
Itrip
Amperes
at 23 °C
Hold
Trip
1.36
2.72
1.60
3.20
Resistance
Ohms
at 23 °C
RMin.
R1Max.
0.085
0.33
0.050
0.15
Max. Time
To Trip
Amperes
at 23 °C
8.0
8.0
Seconds
at 23 °C
Max.
10.0
10.0
Tripped
Power
Dissipation
Watts
at 23 °C
Typ.
2.1
2.1
Environmental Characteristics
Operating Temperature..............................................................-40 °C to +125 °C
Storage Temperature ................................................................-40 °C to +85 °C
Passive Aging ............................................................................+125 °C, 1000 hours ........................................................±15 % typical resistance change
Humidity Aging ..........................................................................+85 °C, 85 % R.H. 7 days................................................±15 % typical resistance change
Thermal Shock ..........................................................................MIL-STD-202F, Method 107G, ........................................±15 % typical resistance change
+125 °C to -55 °C,10 cycles
Vibration ....................................................................................MIL-STD-883C, Method 2007.1, Condition A..................No change
Test Procedures And Requirements For Model MF-SMHT 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 ......................................MIL-STD-202F, Method 208F ................................................95 % min. coverage
Thermal Derating Chart - Ihold _/ Itrip (Amps)
Model
MF-SMHT136
MF-SMHT160
Ambient Operating Temperature
-40 °C -20 °C
0 °C
23 °C
40 °C
50 °C
60 °C
70 °C
85 °C 125 °C
1.91 / 3.82 1.72 / 3.44 1.54 / 3.08 1.36 / 2.72 1.18 / 2.36 1.09 / 2.18 1.00 / 2.00 0.91 / 1.82 0.77 / 1.54 0.40 / 0.80
2.15 / 4.30 1.96 / 3.92 1.78 / 3.56 1.60 / 3.20 1.42 / 2.48 1.33 / 2.66 1.24 / 2.48 1.15 / 3.30 1.02 / 2.04 0.64 / 1.28
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Circuit Protection Division
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