Features n Surface mount packaging for automated n High power ratings assembly n Compliant with AEC-Q200 Rev-D Stress n Agency recognition: Test Qualification for Passive Components in Automotive Applications n Standard 7451 mm (2920 mils) footprint n Low profile n Compatible with Pb and Pb-free solder reflow profiles n RoHS compliant* and halogen free** MF-LSMF Series - PTC Resettable Fuses Electrical Characteristics Tripped Max. Time Agency I I Resistance Power hold trip to Trip Recognition V I Dissipation max max AEC-Q200 Model at 23 C at 23 C Compliant at 23 C at 23 C cUL TV Ohms Watts Volts Amps Amps R R Amps Seconds Typ. E174545 R50256634 Min 1Max MF-LSMF185/33X 33 40 1.85 3.7 0.045 0.150 8.0 2.5 1.5 3 3 3 MF-LSMF260X 24 40 2.60 5.2 0.020 0.075 8.0 5.0 1.5 3 3 3 MF-LSMF300X 6 40 3.00 5.0 0.015 0.048 8.0 15.0 1.5 3 3 MF-LSMF300/24X 24 40 3.00 5.2 0.015 0.075 8.0 15.0 1.5 3 3 3 MF-LSMF400/12X 12 40 4.00 8.0 0.005 0.050 8.0 15.0 1.5 3 3 3 Environmental Characteristics Item Condition Criteria Operating Temperature -40 C to +85 C Recommended Storage +40 C max. / 70 % R.H. max. 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 -40 C to +85 C, 20 times 10 % typical resistance change Solvent Resistance MIL-STD-202, Method 215 No change (marking still legible) Vibration MIL-STD-883C, Method 2007.1 Condition A No change (R < R < R ) min 1max Moisture Sensitivity Level (MSL) See Note ESD Classication Class 6 (per AEC-Q200-2, HBM) Test Procedures and Requirements Item Test Condition Accept/Reject Criteria Visual/Mechanical Verify dimensions and materials Per MF physical description Resistance In still air 23 C R R R min max Time to Trip At specied current, V , 23 C, still air T max. time to trip (seconds) max Hold Current 30 min. at I , still air No trip hold Trip Cycle Life V , I , 100 cycles No arcing or burning max max Trip Endurance V , I , 48 hours No arcing or burning max max Solderability 245 C 5 C, 5 seconds 95 % min. coverage WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov * RoHS Directive 2015/863, Mar 31, 2015 and Annex. **Bourns considers a product to be halogen free if (a) the Bromine (Br) content is 900 ppm or less (b) the Chlorine (Cl) content is 900 ppm or less and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. *RoHS COMPLIANT VERSIONS AVAILABLE *RoHS COMPLIANT LEAD FREE *RoHS and AEC-Q200 COMPLIANT LEAD FREE VERSIONS ARE RoHS COMPLIANT* *RoHS COMPLIANT & AEC APPROVED *RoHS COMPLIANT, **HALOGEN FREE & AEC COMPLIANTApplications n Industrial controls n IEEE ports n Portable electronics MF-LSMF Series - PTC Resettable Fuses Product Dimensions A B C D E Model Min. Max. Min. Max. Min. Max. Min. Min. Max. 6.73 7.98 4.80 5.44 0.75 1.60 0.30 0.25 2.00 MF-LSMF185/33X (0.265) (0.312) (0.189) (0.214) (0.030) (0.063) (0.012) (.010) (.079) 6.73 7.98 4.80 5.44 0.75 1.60 0.30 0.25 2.00 MF-LSMF260X (0.265) (0.312) (0.189) (0.214) (0.030) (0.063) (0.012) (.010) (.079) 6.73 7.98 4.80 5.44 0.35 0.85 0.30 0.25 2.00 MF-LSMF300X (0.014) (0.033) (0.265) (0.312) (0.189) (0.214) (0.012) (.010) (.079) 6.73 7.98 4.80 5.44 0.75 1.60 0.30 0.25 2.00 MF-LSMF300/24X (0.265) (0.312) (0.189) (0.214) (0.030) (0.063) (0.012) (.010) (.079) 6.73 7.98 4.80 5.44 0.65 1.60 0.30 0.25 2.00 MF-LSMF400/12X (0.265) (0.312) (0.189) (0.214) (0.026) (0.063) (0.012) (.010) (.079) MM DIMENSIONS: (INCHES) Top ViewTop View Bottom VBottom View iew Side ViewSide View Terminal material: Recommended Pad LayoutRecommended Pad Layout Electroless Ni under A A C C immersion Au 9 9 5.3 0.105.3 0.10 B B (.209 .004) (.209 .004) X X 2.0 0.052.0 0.05 4.6 0.104.6 0.10 D D E E (.079 .002) (.181 .004) (.079 .002) (.181 .004) Typical Time to Trip at 23 C How to Order 100 MF - LSMF 185/33X - 2 Multifuse Product Designator MF-LSMF260X Series LSMF = 7451 mm (2920 mils) Surface Mount Component 10 Hold Current, Ihold 185-400 (1.85 Amps - 4.00 Amps) MF-LSMF185/33X Higher Voltage Option /12 = 12 Volt Rated /24 = 24 Volt Rated MF-LSMF400/12X /33 = 33 Volt Rated X = Multifuse freeXpansion Design 1 MF-LSMF Series Packaging -2 = Tape and Reel* MF-LSMF300/24X * Packaged per EIA-481 MF-LSMF300X 0.1 Typical Part Marking Represents total content. Layout may vary. PART IDENTIFICATION EXAMPLES: MF-LSMF185/33X = 9 0.01 MF-LSMF260X = E 1 10 100 MF-LSMF300X = F Fault Current (Amps) MF-LSMF300/24X = J E MF-LSMF400/12X = K The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specic customer applications may differ from these values BI-WEEKLY DATE CODE: X due to the influence of other variables. WEEKS 47-48 = X Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Time to Trip (seconds)