features compact design to save board space - 0603 footprint small size results in very fast time to react to fault events low pro le rohs compliant* and halogen free** agency recognition: applications usb port protection hdmi 1.4 source protection pc motherboards - plug and play protection mobile phones - battery and port protection pdas / digital cameras mf-fsmf 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 chlo rine. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. electrical characteristics *rohs compliant model v max. volts i max. amps i hold i trip 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. r 1max. typ. mf-fsmf020x 9 40 0.20 0.50 0.550 3.500 1.00 0.60 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 % typica l resistance change thermal shock ..................................................... +85 c to -40 c, 20 times ......................... 10 % ty pical resistance change solvent resistance ............................................... mil-std-202, method 215 ......................... no change vibration ............................................................... mil-std-883c, method 2007.1, ................ no change condition a test procedures and requirements for model mf-fsmf series test test conditions accept/reject criteria visual/mech. ......................................................... verify dimensions and materials ................. per mf p hysical description resistance ............................................................ in still air @ 23 c ................................... ..... rmin r r1max time to trip ........................................................... at speci? 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 ........................................... n o arcing or burning solderability .......................................................... ansi/j-std-002 ........................................ . 95 % min. coverage ul file number .................................................... e174545 http://www.ul.com/ follow link to certi? cations, then ul file no., enter e174545 thermal derating chart - i hold (amps) model ambient operating temperature -40 c -20 c 0 c 23 c 40 c 50 c 60 c 70 c 85 c mf-fsmf020x 0.27 0.25 0.23 0.20 0.17 0.14 0.12 0.10 0.07 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 asia-paci? c: tel: +886-2 2562-4117 fax: +886-2 2562-4116 europe: tel: +41-41 768 5555 fax: +41-41 768 5510 the americas: tel: +1-951 781-5500 fax: +1-951 781-5700 www.bourns.com
?reexpansion design?is a trademark of bourns, inc. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. mf-fsmf series - ptc resettable fuses product dimensions dimensions: mm (inches) additional features patents pending additional applications automotive electronic control modules game console port protection model ab cd min. max. min. max. min. max. min. mf-fsmf020x 1.45 (0.057) 1.85 (0.073) 0.65 (0.026) 1.05 (0.041) 0.30 (0.012) 0.65 (0.026) 0.20 (0.008) mf-fsmf035x 1.45 (0.057) 1.85 (0.073) 0.65 (0.026) 1.05 (0.041) 0.30 (0.012) 0.65 (0.026) 0.20 (0.008) mf-fsmf050x 1.45 (0.057) 1.85 (0.073) 0.65 (0.026) 1.05 (0.041) 0.65 (0.026) 1.00 (0.039) 0.20 (0.008) packaging: mf-fsmf020x & mf-fsmf035x = 6000 pcs. per reel; mf-fsmf050x = 4000 pcs. per reel a b 1.00 ?0.05 (.039 ?.002) c top view bottom view side view recommended pad layout d i 1.00 ?0.05 (.039 ?.002) 0.70 ?0.05 (.028 ?.002) terminal material: nickel/gold plated. termination pad solderability: standard au nish: meets ansi/j-std-002 category 2. recommended storage: 40 ? max./70 % rh max. how to order mf - fsmf 020 x - 2 multifuse product designator series fsmf = 0603 surface mount component hold current, ihold 020-050 (0.20 - 0.50 amps) multifuse freexpansion design packaging packaged per eia 481-1 -2 = tape and reel typical part marking part identification: mf-fsmf020x = i mf-fsmf035x = mf-fsmf050x = biweekly date code will appear on the packaging label: week 1 and 2 = a week 51 and 52 = z i solder re ow recommendations notes: ? mf-fsmf models cannot be wave soldered. please contact bourns for hand soldering recommendations. ?if re ow temperatures exceed the recommended pro le, devices may not meet the performance requirements. ? compatible with pb and pb-free solder re ow pro les. ? excess solder may cause a short circuit, especially during hand soldering. please refer to the multifuse polymer ptc soldering recommendation guidelines. 160?20 300 250 200 150 100 50 0 10?0 temperature ( c) 120 preheating soldering cooling time (seconds)
typical time to trip at 23 c the time to trip curves represent typical performance of a device in a simulated application environment. actual performance in speci c customer applications may differ from these values due to the in uence of other variables. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. mf-fsmf series - ptc resettable fuses mf-fsmf series, rev. e, 04/10 0.1 0.01 0.001 0.1 1 10 1 100 10 time to trip (seconds) fault current (amps) mf-fsmf020x mf-fsmf035x mf-fsmf050x
n(hub dia.) (measured at hub) a t b d w 2 (measured at hub) w 1 p 00 1 0 0 0 10 p p 2 p 1 a e f w mf-fsmf series tape and reel speci cations product dimensions mf-fsmf series tape dimensions per eia 481-1 w 8.0 0.1 (0.315 0.004) p 0 4.0 0.1 (0.157 0.004) p 1 4.0 0.05 (0.157 0.002) p 2 2.0 0.05 (0.079 0.002) a 0 1.17 0.05 (0.046 0.002) b 0 2.02 0.05 (0.079 0.002) d 0 1.55 0.05 (0.061 0.002) f 3.5 0.05 (0.138 + 0.002) e 1 1.75 0.1 (0.069 0.004) t max. 0.95 0.05 (0.037 0.002) 10 p 0 40.0 0.1 (1.575 0.004) reel dimensions a max. 185 (7.283) n min. 50 (1.97) w 1 8.4 + 1.5/ -0.0 (0.331 + 0.059/-0) w 2 max. 14.4 (0.567) dimensions: mm (inches) speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications.
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