features surface mount packaging for automated assembly small footprint size (1210) and low pro le for space-constrained mobile applications ultra-low resistance rohs compliant* and halogen free** agency recognition: applications thermal protection for li-ion and polymer battery packs game consoles pc motherboards usb port protection - usb 2.0, 3.0 & otg mobile phones digital cameras mf-usml series - low ohmic ptc resettable fuses *rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. *bourns follows the prevailing de nition of ?alogen free?in the industry. bourns considers a product to be ?alogen 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. speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their speci c applications. environmental characteristics operating temperature ......................................... -40 ? to +85 ? maximum device surface temperature in tripped state .................................................... 125 ? passive aging ....................................................... +85 ?, 1000 hours ....................................... ........ ?0 % typical resistance change humidity aging...................................................... +85 ?, 85 % r.h. 100 hours ............................... ?5 % typical resistance change thermal shock ..................................................... +85 ? to -40 ?, 20 times ................................. ... ?0 % typical resistance change solvent resistance ............................................... mil-std-202, method 215 ................................... no change vibration ............................................................... mil-std-883c, method 2007.1, ........................... no change (r min MF-USML380 6 50 3.80 8.00 0.0020 0.0160 19.00 2.00 0.8 test procedures and requirements for model mf-usml series test test conditions accept/reject criteria visual/mech. ......................................................... verify dimensions and materials ......................... .. per mf physical description resistance ............................................................ in still air @ 23 ? ................................... .............. rmin r r1max time to trip ........................................................... at speci ed 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 .......................................................... ansi/j-std-002 ........................................ ........... 95 % min. coverage cul file number ................................................... e174545 http://www.ul.com/ follow link to certi cations, then cul file no., enter e174545 t?v certi cate number ....................................... r 02057213 http://www.tuvdotcom.com/ follow link to ?ther certi cates? enter file no. 2057213 *rohs compliant & **halogen free
speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. mf-usml series - low ohmic ptc resettable fuses product dimensions dimensions: mm (inches) model abcde min. max. min. max. min. max. min. min. max. mf-usml175 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) mf-usml190 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) mf-usml200 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) mf-usml230 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) mf-usml250 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) mf-usml270 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) mf-usml300 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) mf-usml350 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) MF-USML380 3.00 (0.118) 3.43 (0.135) 2.35 (0.093) 2.80 (0.110) 0.30 (0.012) 0.60 (0.024) 0.25 (0.010) 0.05 (0.002) 0.45 (0.018) packaging: 3000 pcs. per reel. terminal material: enig-plated terminals (tin-plated terminals available upon request). termination pad solderability: meets ansi/j-std-002 category 2. recommended storage: 40 ? max./70 % rh max. 160?20 300 250 200 150 100 50 0 10?0 temperature ( c) 120 preheating soldering cooling time (seconds) solder re ow recommendations notes: ? mf-usml models cannot be wave soldered or hand soldered. please contact bourns for 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. ? designed for single solder re ow operations. recommended pad layout 2.5 ?0.1 (.098 ?.004) 2.0 ?0.1 (.079 ?.004) 1.0 ?0.05 (.039 ?.002) 1.0 ?0.05 (.039 ?.002) bottom view d e a b c top view side view
speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. mf-usml series - low ohmic ptc resettable fuses thermal derating chart - i hold (amps) model ambient operating temperature -40 ? -20 ? 0 ? 23 ? 40 ? 50 ? 60 ? 70 ? 85 ? mf-usml175 2.57 2.33 2.07 1.75 1.49 1.34 1.24 1.00 0.91 mf-usml190 2.89 2.58 2.25 1.90 1.54 1.36 1.21 0.94 0.77 mf-usml200 3.26 2.87 2.50 2.00 1.70 1.48 1.29 1.09 0.78 mf-usml230 3.55 3.17 2.78 2.30 1.94 1.72 1.55 1.27 1.06 mf-usml250 3.70 3.35 2.95 2.50 2.10 1.90 1.75 1.40 1.30 mf-usml270 3.98 3.60 3.18 2.70 2.28 2.03 1.90 1.52 1.40 mf-usml300 4.41 3.99 3.54 3.00 2.55 2.30 2.13 1.71 1.56 mf-usml350 5.00 4.60 4.05 3.50 2.80 2.40 2.00 1.60 1.00 MF-USML380 6.00 5.28 4.52 3.80 3.15 2.65 2.39 2.09 1.60 how to order mf - usml 175 - 2 multifuse product designator series usml = 1210 low-ohmic surface mount component hold current, ihold 175 - 380 (1.75 - 3.80 amps) packaging packaged per eia 481-1 -2 = tape and reel typical part marking represents total content. layout may vary. mf-usml series, rev. c, 06/13 part identification: mf-usml175 = u17 mf-usml190 = u19 mf-usml200 = u20 mf-usml230 = u23 mf-usml250 = u25 mf-usml270 = u27 mf-usml300 = u30 mf-usml350 = u35 MF-USML380 = u38 manufacturing date code is located on packing label. u30 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
mf-usml series tape dimensions per eia 481-2 w 8.0 0.3 (0.315 0.012) p 0 4.0 0.1 (0.157 0.004) p 1 4.0 0.1 (0.157 0.004) p 2 2.0 0.05 (0.079 0.002) a 0 2.76 0.10 (0.109 0.004) b 0 3.50 0.10 (0.138 0.004) b 1 max. 4.35 (0.171) d 0 1.5 + 0.1/-0.0 (0.059 + 0.004/-0) f 3.5 0.05 (0.138 + 0.002) e 1 1.75 0.10 (0.069 0.004) e 2 min. 6.25 (0.246) t max. 0.6 (0.024) t 1 max. 0.1 (0.004) k 0 1.07 0.10 (0.042 0.004) leader min. 390 (15.35) trailer min. 160 (6.30) 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) mf-usml series - low ohmic ptc resettable fuses speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. 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 dimensions: mm (inches)
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