Features Applications NT MPLIA ■ Compact design to save board space - ■ USB port protection HS CO 0603 footprint ■ HDMI 1.4 Source protection *Ro ■ Small size results in very fast time to react ■ PC motherboards - Plug and Play to fault events protection ■ Low profi le ■ Mobile phones - Battery and port ■ RoHS compliant* and halogen free** protection ■ Agency recognition: ■ PDAs / digital cameras MF-FSMF Series - PTC Resettable Fuses Electrical Characteristics Tripped Max. Time Ihold Itrip Resistance To Trip Power V max. I max. Dissipation Model Volts Amps Amperes Ohms Amperes Seconds Watts at 23 °C at 23 °C at 23 °C at 23 °C at 23 °C Hold Trip RMin. R1Max. Typ. MF-FSMF010X 15 40 0.10 0.30 0.900 6.000 0.50 1.00 0.5 MF-FSMF020X 9 40 0.20 0.50 0.550 3.500 1.00 0.60 0.5 MF-FSMF025X 6 40 0.25 0.75 0.20 1.400 8.00 0.10 0.5 MF-FSMF035X 6 40 0.35 0.75 0.200 1.400 8.00 0.10 0.5 MF-FSMF050X 6 40 0.50 1.00 0.100 0.800 8.00 0.10 0.5 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. 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 ConditionA Test Procedures And Requirements For Model MF-FSMF 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 ..........................................................ANSI/J-STD-002 ..........................................95 % min. coverage UL File Number ....................................................E174545 http://www.ul.com/ Follow link to Certifi cations, then UL File No., enter E174545 TÜV Certifi cate Number .......................................R 50171531 http://www.tuvdotcom.com/ Follow link to “other certifi cates”, enter File No. 50171531 Thermal Derating Chart - Ihold (Amps) Ambient Operating Temperature Model -40 °C -20 °C 0 °C 23 °C 40 °C 50 °C 60 °C 70 °C 85 °C MF-FSMF010X 0.13 0.12 0.11 0.10 0.08 0.07 0.06 0.05 0.03 MF-FSMF020X 0.27 0.25 0.23 0.20 0.17 0.14 0.12 0.10 0.07 MF-FSMF025X 0.32 0.29 0.27 0.25 0.21 0.18 0.16 0.14 0.10 MF-FSMF035X 0.47 0.41 0.38 0.35 0.29 0.26 0.24 0.20 0.14 MF-FSMF050X 0.67 0.59 0.54 0.50 0.41 0.37 0.34 0.29 0.20 * RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. **Bourns follows the prevailing definition of “halogen free” in the industry. 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.

Additional Applications ■ Automotive electronic control modules ■ Game console port protection MF-FSMF Series - PTC Resettable Fuses Product Dimensions A B C D Model Min. Max. Min. Max. Min. Max. Min. 1.45 1.85 0.65 1.05 0.30 0.65 0.20 MF-FSMF010X (0.057) (0.073) (0.026) (0.041) (0.012) (0.026) (0.008) 1.45 1.85 0.65 1.05 0.30 0.65 0.20 MF-FSMF020X (0.057) (0.073) (0.026) (0.041) (0.012) (0.026) (0.008) 1.45 1.85 0.65 1.05 0.30 0.65 0.20 MF-FSMF025X (0.057) (0.073) (0.026) (0.041) (0.012) (0.026) (0.008) 1.45 1.85 0.65 1.05 0.30 0.65 0.20 MF-FSMF035X (0.057) (0.073) (0.026) (0.041) (0.012) (0.026) (0.008) 1.45 1.85 0.65 1.05 0.65 1.00 0.20 MF-FSMF050X (0.057) (0.073) (0.026) (0.041) (0.026) (0.039) (0.008) Packaging: MF-FSMF010X = 5000 pcs. per reel; MM DIMENSIONS: MF-FSMF020X, MF-FSMF025X & MF-FSMF035X = 6000 pcs. per reel; (INCHES) MF-FSMF050X = 4000 pcs. per reel Top View Bottom View Side View Recommended Pad Layout Terminal material: Nickel/gold plated. A C Termination pad solderability: Standard Au fi nish: I 1.00 ± 0.05 Meets ANSI/J-STD-002 Category 2. B (.039 ± .002) Recommended Storage: 40 °C max./70 % RH max. D 0.70 ± 0.05 1.00 ± 0.05 (.028 ± .002) (.039 ± .002) How To Order MF - FSMF 020 X - 2 Solder Refl ow Recommendations Multifuse® Product Designator Preheating Soldering Cooling 300 Series FSMF = 0603 Surface Mount 250 Component Hold Current, Ihold erature (C)° 210500 MPau0clt1kifa0ug-s0ien5®g0 f r(e0e.1X0p -a n0s.5io0n A™m Dpse)sign p Packaged per EIA 481-1 em 100 -2 = Tape and Reel T 50 Typical Part Marking 0 PART IDENTIFICATION: MF-FSMF010X = II 160–220 10–20 120 I MMFF--FFSSMMFF002205XX == I+ MF-FSMF035X = (cid:129) Time (seconds) MF-FSMF050X = — Notes: BI-WEEKLY DATE CODE WILL APPEAR ON THE PACKAGING LABEL: • MF-FSMF models cannot be wave soldered. Please contact Bourns for hand soldering WEEK 1 AND 2 = A recommendations. WEEK 51 AND 52 = Z • If refl ow temperatures exceed the recommended profi le, devices may not meet the “freeXpansion Design” is a trademark of Bourns, Inc. performance requirements. Specifications are subject to change without notice. • Compatible with Pb and Pb-free solder refl ow profi les. Users should verify actual device performance • Excess solder may cause a short circuit, especially during hand soldering. Please refer to in their specific applications. the Multifuse® Polymer PTC Soldering Recommendation guidelines. 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.

MF-FSMF Series - PTC Resettable Fuses Typical Time to Trip at 23 °C & MF010X MF020XMF025MXF 035X MF050X MF-FS MF-FSMF-FSMF-FS MF-FS 100 10 s) d n o 1 c e S p ( Tri o me t 0.1 Ti 0.01 0.001 0.1 1 10 Fault Current (Amps) The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specifi c cus- tomer applications may differ from these values due to the infl uence of other variables. Asia-Pacifi c: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 EMEA: Tel:+3688520390•Fax:+3688520211 The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700 www.bourns.com MF-FSMF SERIES, REV. I, 08/15 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.

MF-FSMF Series Tape and Reel Specifi cations Product Dimensions MF-FSMF020X, MF-FSMF010X MF-FSMF025X, MF-FSMF035X MF-FSMF050X Tape Dimensions per EIA 481-1 per EIA 481-1 per EIA 481-1 8.0 ± 0.1 8.0 ± 0.1 8.0 ± 0.1 W (0.315 ± 0.004) (0.315 ± 0.004) (0.315 ± 0.004) 4.0 ± 0.1 4.0 ± 0.1 4.0 ± 0.1 P 0 (0.157 ± 0.004) (0.157 ± 0.004) (0.157 ± 0.004) 4.0 ± 0.05 4.0 ± 0.05 4.0 ± 0.05 P 1 (0.157 ± 0.002) (0.157 ± 0.002) (0.157 ± 0.002) 2.0 ± 0.05 2.0 ± 0.05 2.0 ± 0.05 P 2 (0.079 ± 0.002) (0.079 ± 0.002) (0.079 ± 0.002) 1.17 ± 0.05 1.17 ± 0.05 1.17 ± 0.05 A 0 (0.046 ± 0.002) (0.046 ± 0.002) (0.046 ± 0.002) 2.02 ± 0.05 2.02 ± 0.05 2.02 ± 0.05 B 0 (0.079 ± 0.002) (0.079 ± 0.002) (0.079 ± 0.002) 1.55 ± 0.05 1.55 ± 0.05 1.55 ± 0.05 D 0 (0.061 ± 0.002) (0.061 ± 0.002) (0.061 ± 0.002) 3.5 ± 0.05 3.5 ± 0.05 3.5 ± 0.05 F (0.138 + 0.002) (0.138 + 0.002) (0.138 + 0.002) 1.75 ± 0.1 1.75 ± 0.1 1.75 ± 0.1 E 1 (0.069 ± 0.004) (0.069 ± 0.004) (0.069 ± 0.004) 0.75 ± 0.05 0.60 ± 0.05 0.95 ± 0.05 T (0.030 ± 0.002) (0.024 ± 0.002) (0.037 ± 0.002) 40.0 ± 0.1 40.0 ± 0.1 40.0 ± 0.1 1 0 P0 (1.575 ± 0.004) (1.575 ± 0.004) (1.575 ± 0.004) Reel Dimensions 185 185 185 A max. (7.283) (7.283) (7.283) 50 50 50 N min. (1.97) (1.97) (1.97) 8.4 + 1.5/ -0.0 8.4 + 1.5/ -0.0 8.4 + 1.5/ -0.0 W 1 (0.331 + 0.059/-0) (0.331 + 0.059/-0) (0.331 + 0.059/-0) 14.4 14.4 14.4 W2 max. (0.567) (0.567) (0.567) 10 P0 W2(MEASURED AT HUB) T P0 D0 E1 F W A N(HUB DIA.) B 0 P2 P1 A0 W1(MEASURED AT HUB) MM DIMENSIONS: (INCHES) 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.

3B3o1u2rn -s ®2 Mmumlti fSuMseD® TPrPimTCm Rinegse Pttoatbelnet Fioumseester Application Notice • Users are responsible for independent and adequate evaluation of Bourns® Multifuse® Polymer PTC devices in the user’s application, including the PPTC device characteristics stated in the applicable data sheet. • Polymer PTC devices must not be allowed to operate beyond their stated maximum ratings. Operation in excess of such maximum ratings could result in damage to the PTC device and possibly lead to electrical arcing and/or fire. Circuits with inductance may generate a voltage above the rated voltage of the polymer PTC device and should be thoroughly evaluated within the user’s application during the PTC selection and qualification process. • Polymer PTC devices are intended to protect against adverse effects of temporary overcurrent or overtemperature conditions up to rated limits and are not intended to serve as protective devices where overcurrent or overvoltage conditions are expected to be repetitive or prolonged. • In normal operation, polymer PTC devices experience thermal expansion under fault conditions. Thus, a polymer PTC device must be protected against mechanical stress, and must be given adequate clearance within the user’s application to accommodate such thermal expansion. Rigid potting materials or fixed housings or coverings that do not provide adequate clearance should be thoroughly examined and tested by the user, as they may result in the malfunction of polymer PTC devices if the thermal expansion is inhibited. • Exposure to lubricants, silicon-based oils, solvents, gels, electrolytes, acids, and other related or similar materials may adversely affect the performance of polymer PTC devices. • Aggressive solvents may adversely affect the performance of polymer PTC devices. Conformal coating, encapsulating, potting, molding, and sealing materials may contain aggressive solvents including but not limited to xylene and toluene, which are known to cause adverse effects on the performance of polymer PTCs. Such aggressive solvents must be thoroughly cured or baked to ensure their complete removal from polymer PTCs to minimize the possible adverse effect on the device. • Recommended storage conditions should be followed at all times. Such conditions can be found on the applicable data sheet and on the Multifuse® Polymer PTC Moisture/Reflow Sensitivity Classification (MSL) note: https://www.bourns.com/docs/RoHS-MSL/msl_mf.pdf MFAN 12/18 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.

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