Features
■ Compliant with AEC-Q200 Rev-C- Stress
Test Qualifi cation for Passive Components
in Automotive Applications
■ Surface Mount Devices
■ Fully compatible with current
industry standards
■ Packaged per EIA 481-2 standard
■ RoHS compliant* and halogen free**
■ Agency recognition:
■ Patents pending
MF-SM Series - PTC Resettable Fuses
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
**To be considered halogen free, each homogenous material can have a maximum concentration of 900 ppm of either bromine or chlorine.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
*RoHS COMPLIANT
& AEC APPROVED
Electrical Characteristics
Model V max.
Volts
I max
Amps
Ihold Itrip Resistance Max. Time
To Tr i p
Tripped
Power
Dissipation
Amperes
at 23 °C
Ohms
at 23 °C
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Hold Trip R Min. R1 Max. Max. Typ.
MF-SM030 60 40 0.30 0.60 0.90 4.80 1.5 3.0 1.7
MF-SM050 60 40 0.50 1.00 0.35 1.40 2.5 4.0 1.7
MF-SM075 30 80 0.75 1.50 0.23 1.00 8.0 0.3 1.7
MF-SM075/60* 60 10 0.75 1.50 0.23 1.00 8.0 0.3 1.7
MF-SM100 30 80 1.10 2.20 0.12 0.48 8.0 0.5 1.7
MF-SM100/33 33 40 1.10 2.20 0.12 0.41 8.0 0.5 1.7
MF-SM125 15 100 1.25 2.50 0.07 0.25 8.0 2.0 1.7
MF-SM150 15 100 1.50 3.00 0.06 0.25 8.0 5.0 1.9
MF-SM150/33 33 40 1.50 3.00 0.06 0.23 8.0 5.0 1.9
MF-SM185/33 33 40 1.80 3.60 0.04 0.15 8.0 5.0 1.9
MF-SM200 15 100 2.00 4.00 0.045 0.125 8.0 12.0 1.9
MF-SM250 15 100 2.50 5.00 0.024 0.085 8.0 25.0 1.9
MF-SM260 6 100 2.60 5.20 0.025 0.075 8.0 20.0 1.7
MF-SM300** 6 100 3.00 6.00 0.015 0.048 8.0 35.0 1.5
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. 7 days ......................................... ±5 % typical resistance change
Thermal Shock .......................................................... MIL-STD-202F, Method 107G, .................................. ±10 % 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-SM 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 specifi ed 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
UL File Number ............... E174545 http://www.ul.com/ Follow link to Certifi cations, then UL File No., enter E174545
CSA File Number ............. CA110338 http://directories.csa-international.org/ Under “Certifi cation Record” and “File Number” enter 110338-0-000
TÜV Certifi cate Number .. R 02057213 http://www.tuvdotcom.com/ Follow link to “other certifi cates”, enter File No. 2057213
Thermal Derating Chart - Ihold (Amps)
Model Ambient Operating Temperature
-40 ºC -20 ºC 0 ºC 23 ºC 40 ºC 50 ºC 60 ºC 70 ºC 85 ºC
MF-SM030 0.45 0.40 0.35 0.30 0.25 0.23 0.20 0.17 0.14
MF-SM050 0.76 0.67 0.59 0.50 0.42 0.38 0.33 0.29 0.23
MF-SM075 1.11 0.99 0.84 0.75 0.63 0.57 0.49 0.45 0.36
MF-SM075/60 1.11 0.99 0.84 0.75 0.63 0.57 0.49 0.45 0.36
MF-SM100 1.66 1.47 1.29 1.10 0.91 0.83 0.73 0.64 0.50
MF-SM100/33 1.66 1.47 1.29 1.10 0.91 0.83 0.73 0.64 0.50
MF-SM125 1.89 1.68 1.46 1.25 1.04 0.94 0.83 0.73 0.56
MF-SM150 2.27 2.01 1.76 1.50 1.25 1.13 0.99 0.87 0.68
MF-SM150/33 2.27 2.01 1.76 1.50 1.25 1.13 0.99 0.87 0.68
MF-SM185/33 2.56 2.32 2.08 1.85 1.60 1.44 1.28 1.12 0.88
MF-SM200 3.02 2.68 2.34 2.00 1.66 1.50 1.32 1.16 0.90
MF-SM250 3.78 3.35 2.93 2.50 2.08 1.88 1.65 1.45 1.13
MF-SM260 3.64 3.25 2.91 2.60 2.26 2.08 1.95 1.74 1.48
MF-SM300 4.13 3.75 3.30 2.87 2.62 2.43 2.25 2.00 1.78
*CSA recognition pending. **UL approved, CSA & TUV approval pending.
Itrip is approximately two times Ihold.