Features
■ Compliant with AEC-Q200 Rev-C Stress
Test Qualification for Passive Components
in Automotive Applications
■ RoHS compliant*
■ Operating temperature range up to 125 °C
■ Low thermal derating factor
136
4A
■ Higher hold currents at elevated
temperature
■ Choice of operating currents
MF-SMHT Series - PTC Resettable Fuses
Electrical Characteristics
Tripped
Power
Max. Time
I
I
Resistance
hold
Amperes
trip
To Trip
Dissipation
V max.
I max.
Amps
Model
Volts
Ohms
at 23 °C
R
Amperes
Seconds
Watts
at 23 °C
at 23 °C
at 23 °C
at 23 °C
R
Hoꢃd
Trip
2.72
3.20
Tꢁp.
2.1
Min.
1Max.
0.33
MF-SMHT136
MF-SMHT160
16
16
100
100
1.36
1.60
0.085
0.050
8.0
8.0
10.0
10.0
0.15
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 ꢀ tꢁpiꢂaꢃ resistanꢂe ꢂhange
Humiditꢁ Aging...................................................... +85 °C, 85 ꢀ R.H. 7 daꢁs..................................... 15 ꢀ tꢁpiꢂaꢃ resistanꢂe ꢂhange
Thermaꢃ Shoꢂk ..................................................... MIL-STD-202F, Method 107G,.............................. 15 ꢀ tꢁpiꢂaꢃ resistanꢂe ꢂhange
+125 °C to -55 °C,10 ꢂꢁꢂꢃes
Vibration ............................................................... MIL-STD-883C, Method 2007.1, Condition A ....... No ꢂhange
Test Procedures And Requirements For Model MF-SMHT Series
Test
Test Conditions
Accept/Reject Criteria
Visuaꢃ/Meꢂh.......................................................... Verifꢁ dimensions and materiaꢃs........................... Per MF phꢁsiꢂaꢃ desꢂription
Resistanꢂe............................................................ In stiꢃꢃ air @ 23 °C................................................. Rmin ≤ R ≤ R1max
Time to Trip........................................................... At speꢂified ꢂurrent, Vmax, 23 °C......................... T ≤ max. time to trip (seꢂonds)
Hoꢃd Current......................................................... 30 min. at Ihoꢃd ..................................................... No trip
Trip Cꢁꢂꢃe Life....................................................... Vmax, Imax, 100 ꢂꢁꢂꢃes........................................ No arꢂing or burning
Trip Enduranꢂe..................................................... Vmax, 48 hours..................................................... No arꢂing or burning
Soꢃderabiꢃitꢁ.......................................................... MIL-STD-202F, Method 208F ............................... 95 ꢀ min. ꢂoverage
Thermal Derating Chart - I
/I
(Amps)
hold trip
Ambient Operating Temperature
23 °C 40 °C 50 °C 60 °C
Model
-40 °C
-20 °C
0 °C
70 °C
85 °C
125 °C
MF-SMHT136 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
MF-SMHT160 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
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www.bourns.com
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.