* rohs directive 2002/95/ec jan 27 2003 including annex specifications are subject to change without notice. customers should verify actual device performance in their specific applications. mf-smht series - ptc resettable fuses max. time tripped i hold i trip to trip power resistance dissipation model amperes ohms amperes seconds watts v max. i max. at 23 c at 23 c at 23 c at 23 c at 23 c volts amps hold trip r min. r 1max. max. typ. mf-smht136 16 100 1.36 2.72 0.085 0.33 8.0 10.0 2.1 MF-SMHT160 16 100 1.60 3.20 0.050 0.15 8.0 10.0 2.1 electrical characteristics 4 a 1 3 6 4 a 1 3 6 features operating temperature range up to 125 c low thermal derating factor higher hold currents at elevated temperature choice of operating currents rohs compliant* applications protection of automotive circuitry including engine control modules overcurrent surge protection of electronic equipment required to operate at high operating temperature ranges resettable fault protection of general electronic equipment thermal derating chart - i hold / i trip (amps) operating temperature..............................................................-40 ? to +125 ? storage temperature ................................................................-40 ? to +85 ? passive aging ............................................................................+125 ?, 1000 hours ................... .....................................?5 % typical resistance change humidity aging ..........................................................................+85 ?, 85 % r.h. 7 days............... .................................?5 % typical resistance change thermal shock ..........................................................................mil-std-202f, method 107g, .............. ..........................?5 % typical resistance change +125 ? to -55 ?,10 cycles vibration ....................................................................................mil-std-883c, method 2007.1, condi tion a..................no change environmental characteristics test test conditions accept/reject criteria visual/mech. ......................................verify dimensions and materials ............................................pe r mf physical description resistance..........................................in still air @ 23 ? ....................................................... ...........rmin r r1max time to trip ........................................at specified current, vmax, 23 ? ........................................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 test procedures and requirements for model mf-smht series ambient operating temperature model -40 c -20 c0 c 23 c 40 c 50 c 60 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 circuit protection division asia-pacific: 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 *rohs compliant
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. abcd e f gh model min. max. max. max. min. max. min. max. min. max. min. max. min. mf-smht136 6.73 7.98 3.00 5.44 0.56 0.71 0.56 0.71 2.16 2.41 0.66 1.37 0.43 (0.265) (0.314) (0.118) (0.214) (0.022) (0.028) (0.022) (0.028) (0.085) (0.095) (0.026) (0.054) (0.017) MF-SMHT160 8.00 9.50 3.00 6.71 0.56 0.71 0.56 0.71 3.68 3.94 0.66 1.37 0.43 (0.315) (0.374) (0.118) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017) product dimensions a d h e side view b mm (inches) f c end view g mf-smht series - ptc resettable fuses packaging: tape & reel: mf-smht136 = 2000 pcs. per reel; MF-SMHT160 = 1500 pcs. per reel. terminal material: tin-plated brass 2.3 0.1 (0.09 0.004) 9.7 0.1 (0.38 0.004) 3.1 0.1 (0.12 0.004) 3.1 0.1 (0.12 0.004) recommended pad layout mf-smht136 10.7 0.1 (0.42 0.004) 4.6 0.1 (0.18 0.004) 2.3 0.1 (0.09 0.004) 4.6 0.1 (0.18 0.004) recommended pad layout MF-SMHT160 unit = typical part marking represents total content. layout may vary. manufacturer's trademark part identification 136 4a date code - week 1 of 2004 = 4a (year & week) week 27 of 2004 = a4 (week & year) how to order mf - smht 136 - 2 multifuse product designator series smht = surface mount component hold current, ihold 136 - 160 (1.36 - 1.60 amps) packaging options - 2 = tape and reel* *packaged per eia-481-2
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. typical time to trip at 23 ?c 0.01 0.1 0.001 1 10 100 1 10 fault current (amps) time to trip (seconds) mf-smht136 MF-SMHT160 mf-smht series - ptc resettable fuses mf-smht series, rev. d, 08/05 solder reflow recommendations 160?20 300 250 200 150 100 50 0 10?0 temperature ( c) 120 preheating soldering cooling time (seconds) solder reflow recommended reflow methods: ir, vapor phase oven, hot air oven. devices are not designed to be wave soldered to the bottom side of the board. gluing the devices is not recommended. recommended maximum paste thickness is 0.25 mm (.010 inch). devices can be cleaned using standard industry methods and solvents. note: if reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. rework a device should not be reworked. the time to trip curves represent typical performance of a device in a simulated application environment. actual performance in specific customer applications may differ from these values due to the influence of other variables.
mf-smht136 MF-SMHT160 tape dimensions per eia-481-2 per eia 481-2 w p 0 p 1 p 2 a 0 b 0 b 1 max. d 0 f e 1 e 2 min. t max. t 1 max. k 0 leader min. trailer min. reel dimensions a max. n min. w 1 w 2 max. 7.5 0.1 (0.295 + 0.004) specifications are subject to change without notice. customers should verify actual device performance in their specific applications. mf-smht series tape and reel specifications b 1 n(hub dia.) (measured at hub) a t cover tape k 0 t 1 a 0 w 2 (measured at hub) w 1 p 1 b 0 f d 0 p 2 p 0 e 2 e 1 w unit = mm (inches) 16.0 0.3 (0.630 0.012) 16.0 0.3 (0.630 0.012) 4.0 0.1 (0.157 0.004) 4.0 0.1 (0.157 0.004) 8.0 0.1 (0.315 0.004) 12.0 0.1 (0.472 0.004) 2.0 0.1 (0.079 0.004) 2.0 0.1 (0.079 0.004) 5.7 0.1 (0.224 0.004) 6.9 0.1 (0.272 0.004) 8.1 0.1 (0.319 0.004) 9.6 0.1 (0.378 0.004) 12.1 (0.476) 12.1 (0.476) 1.75 0.1 (0.069 0.004) 1.75 0.1 (0.069 0.004) 14.25 (0.561) 14.25 (0.561) 390 (15.35) 390 (15.35) 7.5 0.1 (0.295 + 0.004) 16.4 + 2.0/ -0.0 (0.646 + 0.079/-0) 16.4 + 2.0/ -0.0 (0.646 + 0.079/-0) 1.5 + 0.1/-0.0 (0.059 + 0.004/-0) 1.5 + 0.1/-0.0 (0.059 + 0.004/-0) 0.6 (0.024) 0.6 (0.024) 0.1 (0.004) 0.1 (0.004) 3.4 0.1 (0.134 0.004) 3.4 0.1 (0.134 0.004) 160 (6.30) 160 (6.30) 360 (14.17) 360 (14.17) 50 (1.97) 50 (1.97) 22.4 (0.882) 22.4 (0.882)
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