*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. cmf-rd series - telecom cptc resettable fuses time induction rated resistance to trip voltage rated resistance matching hold hold trip imax @ @ imax/ model withstand voltage (rn) in housing current current current 230 vac 230 vac amps amps amps vac volts ohms tolerance ohms @ 25 c @ 40 c @ 25 c amps seconds cmf-rd50 600 230 50 20 % 0.5 0.09 0.06 0.19 3.0 < 0.1 cmf-rd50-10 600 230 50 10 % 0.5 0.09 0.06 0.19 3.0 < 0.1 electrical characteristics features two resistance-matched ptcs in a ceramic housing aids compliance with: - itu-t k.20/21/45 - telcordia gr-1089-core - ul 60950, 3rd ed. narrow resistance tolerance rohs compliant* applications used as a secondary overcurrent protection device in: customer premise equipment (cpe) central office (co) access equipment *rohs compliant how to order cmf - rd 50 - 10 - 0 product designator style rd = radial dual package rated resistance (rn) 50 (50 ohms) rated resistance tolerance -10 = 10 % blank = 20 % (standard) packaging options - 0 = bulk packaging typical part marking represents total content. layout may vary. product dimensions packaging options: bulk: 96 pcs. per plastic box mm (inches) dimensions = 13 2 4 3.5 (.138) 10.0 0.2 (.394 .008) 8.8 0.2 (.346 .008) 8.8 0.2 (.346 .008) 0.35 (.014) side front top bottom 0.75 (.030) 0.6 (.236) 1 & 3 = front pins 2 & 4 = back pins pins 1 & 2 = 1st cptc pins 3 & 4 = 2nd cptc 5.0 0.2 (.197 .008) 6.0 (.236) 9.3 0.2 (.366 .008) 1.5 (.059) 2.0 (.079) 4.7 0.1 (.185 .039) 5.0 0.2 (.197 .008) 2.5 0.1 (.098 .004) 12 3 4 c50m7g manufacturer's trademark ceramic case part identification: 50m = cmf-rd50 50k = cmf-rd50-10 year code: 7 = 2007 bi-weekly date code: week 13-14 = g primary test protection test condition requirements* mains power contact - itu-t k.20, k.21 ....none................230 v rms, 10 ohms, 15 min. ...................................... ................(ri-rf) / ri < 10 % power induction - itu-t k.20, k.21..............none................600v rms, 600 ohms, 0.2 seconds, 10 cycles, every 1 min. ... ...(ri-rf) / ri < 10 % power induction - itu-t k.20, k.21..............gdt ................600 v rms, 600 ohms, 1 second, 10 cycles, every 1 min. ...... ....(ri-rf) / ri < 10 % power induction - itu-t k.20, k.21..............gdt ................600 v rms, 200 ohms, 1 second, 10 cycles, every 1 min. ...... ....(ri-rf) / ri < 10 % lightning surge - itu-t k.20, k.21 ......................................10/700 s, 25 ohms, 1.0 kv, 10 tests, every 1 min. ..................(ri-rf) / ri < 10 % lightning surge......................................................................10/1000 s, 40 ohms, 1.0 kv, 30 tests, every 3 min. ................(ri-rf) / ri < 10 % overvoltage withstand ..........................................................300 v, 3 a, 4 hours, 1 time ..................... ...................................(ri-rf) / ri < 10 % failure mode ..........................................................................300 v, rl=0, 60 min. ..................... .............................................** ri = r initial rf = r final ** circuit disconnected or high resistance is acceptable. test procedures and requirements for model cmf-rd series
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 reliable electronic solutions cmf-rd series, rev. a, 04/07 copyright? 2007, bourns, inc. litho in u.s.a., mf0705 03/07
|
