temperature range ........-55 ? to +125 ? environmental characteristics thermal shock ......................mil-std-202, method 107, test condition b (-65 ? to +125 ?) shock ..........mil-std-202, method 213, test condition i (100 gs peak for 6 milliseconds) vibration ........mil-std-202, method 201 (10-55 hz, 0.06 inch total excursion) salt spray ....mil-std-202, method 101, test condition b (48 hrs.) insulation resistance ........mil-std-202, method 302, test condition a (after opening) 10,000 ohms minimum solderability ..mil-std-202, method 208 resistance to solder heat ..................mil-std-202, method 210, test condition j (235 ?, 30 sec.) physical characteristics body material ..........ceramic with tin plated brass caps solder ............................................lead free solder reflow temperature ..............................240 c for 30 seconds 260 c for 3 seconds packaging ..............2,000 pcs. per 13 ?reel *rohs directive 2002/95/ec jan 27 2003 including annex. specifications are subject to change without notice. customers should verify device performance in their specific applications. telefuse smd power cross protection fuse features for use in telecommunication circuit applications requiring low current protection with high surge tolerance overcurrent protection to telcordia gr-1089-core issue 4 (b1250t only) & ul 1950/60950 bourns tisp products are recommended for the overvoltage section of the circuit agency recognition: file: e198545 rohs compliant* max. rise/ repetitions minimum minimum withstand peak current (a) min. decay peak ( s) total each polarity voltage (v) b0500t b1250t B2000T 10/1000 50 25 1000 25 100 120 10/360 50 25 1000 30 125 150 2/10 20 10 2500 120 500 600 10/360 10 5 1000 30 125 150 2/10 2 1 5000 120 500 600 8/20 2 1 5000 75 300 350 lightning surge withstand capabilities ampere voltage typical volt-drop melting i 2 t melting i 2 t maximum model rating rating cold @ 100 % in < 10 msec @ 10 in power number (a) (vrms) resistance (volts) (a 2 sec.) (a 2 sec.) dissipation (ohms) max. (w) b0500t 0.500 600 0.350 0.23 2 2.3 0.20 b1250t 1.25 600 0.075 0.18 14 17 0.40 B2000T 2.0 600 0.056 0.16 33 37 0.52 electrical characteristics asia-pacific: tel +886- (0)2 25624117 fax +886- (0)2 25624116 europe: tel +41-41 7685555 fax +41-41 7685510 the americas: tel +1-951 781-5500 fax +1-951 781-5700 www.bourns.com *rohs compliant test methods per gr-1089/tia-968-a (fcc pt. 68) short fuse characteristics gr-1089 circuit 1st level voltage current test (vrms) (a) applications duration b0500t b1250t B2000T 1 50 0.33 1 15 min. 2 100 0.17 1 15 min. 3 200,400, 1 60 1 sec. parts pass all 1st level tests 600 4 1000 1 60 1 sec. 6 600 0.5 1 30 sec. 7 440 2.2 5 2 sec. will open 8 600 3 5 1.1 sec. will open 9 1000 5 5 0.4 sec. will open ac power fault tests maximum time for fuse to open (seconds) voltage current (vac) (a) duration b0500t b1250t B2000T 600 2.2 1.0 900 will not open 600 2.6 0.8 50 2000 600 3.0 0.5 10 100 600 3.75 0.3 5 10 600 5 0.2 2 3 600 7 up to 15 min. 0.08 1 2 600 10 0.04 0.5 0.7 600 12.5 0.01 0.2 0.3 600 20 0.005 0.07 0.1 600 25 0.004 0.04 0.07 600 30 0.003 0.02 0.05 ac current limiting protector tests/fusing coordination tests
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. time/current characteristic curve telefuse smd power cross protection fuse 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 10000 time (seconds) current (amperes) b1250t B2000T b0500t 3.05 .127 (.120 .005) 3.05 .127 (.120 .005) 2.03 .102 (.080 .004) 9.65 .254 (.38 .01) 3.81 (.15) 4.06 (.16) 5.08 (.20) product dimensions solder profile - 260 ? for 3 seconds recommended pad layout dimensions: mm (inches) 300 267 233 200 167 133 100 67 33 0 048 preheat seconds temperature (?) zone 2 zone 3 reflow cool 95 143 190 238 286 333 381 429
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. ?elefuse?is a trademark of bourns, inc. packaging specifications telefuse smd power cross protection fuse rev. 01/09 330 (12.992) 2.0 0.1 (.079 .004) 0.40 0.05 (.016 .002) 1.55 0.05 (.061 .002) dia. 1.6 0.05 (.063 .002) dia. 0.3 (.012) typ. r 1.6 (.063) 20 (.787) 2.2 (.087) 13.0 (.512) dia. 55.0 (2.165) dia. dia. 21.0 (.827) dia. 1.75 0.1 (.069 .004) 7.50 0.1 (.295 .004) 16.0 0.3 (.630 .012) 10.0 0.1 (.394 .004) 3 ref. 4.0 0.1 (.157 .004) 8.0 0.1 (.315 .004) 3.50 0.1 (.138 .004) 3.50 0.1 (.138 .004) c l c l dimensions: mm (inches)
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