fuses / sicherungen PFMT resettable fuses www.schurter.com 19 surface mount ptc-fuses type PFMT 5,4 x 8,5 mm high voltage surge capabilities compliance to itu k.20/k.21 specifications packaged per eia 486-b agency recognition: ul, csa, t?v typical time to trip at 23 ?c time to trip (s) dimensions applications used as a secondary overcurent protection device in: customer premise equipment (cpe) central office (co) subscriber line interface cards (slic) test procedures and requirements for model PFMT series test / test test conditions / bedingungen accept/reject criteria visual/mech. / visuell/mech. verify dimensions and materials / kontrolle abmess./mat. per mf physical description resistance / widerstand in still air @ 23? / bei ruhiger luft 23 ? r min r r max time to trip / trip-zeit at specified current, v max 23 ? / bei entspr. strom t max. time to trip (sec.) hold current / haltestrom 30 min. at i hold / bei haltestrom no trip / keine ausl?sung trip cycle life / trip-zyklen v max , i max , 100 cycles / zyklen no arcing or burning trip endurance / zeit im tripzustand v max , 48 hours / stunden no arcing or burning solderability / l?tbarkeit mil-std-202f, method 208f / methode 208f 95% min. coverage environmental characteristics operating/storage temperature / einsatz/lagertemp. -45 ? to +85 ? maximum device surface temperature in tripped state / 125 ? passive aging / passive alterung +85 ?, 1000 hours / std. 2% typ. resist. change +60 ?, 1000 hours / std. 3% typ. resist. change humidity aging / feuchtigkeitsalterung +85 ?, 85% r.h. 500 hours / std. 3% typ. resist. change thermal shock / thermischer schock mil-std-202f, method 107g ?0% typ. resist. change +125 ?/?5 ? 10 times / zyklen ?5% typ. resist. change solvent resistance / l?sungsmittel-best?ndigkeit mil-std-202, method 215b no change lead solerability / l?tbarkeit ansi/j-std-002 flammability / entflammbarkeit iec 695-2-2 no flame for 60 sec. vibration mil-std-883c, method 2007.1, no change condition a typical part marking layout may vary manufacturer s trademark part identification date code week 1 of 2000 = 0a (year and week) week 27 of 2000 = a0 (week and year) resistance bin 50 75 100 fault current (a) 0.1 1 5 20 10 1 0.1 0.01 PFMT.013.250.a.2 PFMT.013.250.a.2 PFMT.013.250.c.2 PFMT.013.250.2 PFMT.013.250.b.2 1.8 (.071) 4.6 (.181) 9.7 (.382) 1.8 (.071) 4.6 (.181) solder pad layouts end view / endansicht side view end view / endansicht c b d a c e
fuses / sicherungen PFMT resettable fuses www.schurter.com 20 electrical characteristics type / typ abcde min. max. max. max. nom. nom. PFMT.013.250.2 8.5 9.4 3.4 7.4 0.3 3.75 (0.335) (0.370) (0.134) (0.291) (0.011) (0.148) PFMT.013.250.a.2 8.5 9.4 3.4 7.4 0.3 3.75 (0.335) (0.370) (0.134) (0.291) (0.011) (0.148) PFMT.013.250.b.2 8.5 9.4 3.4 7.4 0.3 3.75 (0.335) (0.370) (0.134) (0.291) (0.011) (0.148) PFMT.013.250.c.2 8.5 9.4 3.4 7.4 0.3 3.75 (0.335) (0.370) (0.134) (0.291) (0.011) (0.148) dimensions soldering profile / l?tprofil how to order pf mt .xxx .xxx .x .x ptc-fuse style mt = surface mount/ telecom component hold current, i hold 013 (0.13 amps) max. interrupt voltage, v 250 (250 v) resistance sorted a = 6.5-9 b = 9-12 c = 7-12 packaging options packaged per eia 486-b 2 = tape and reel solder reflow recommended reflow methods: i r , 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 recom- mended. 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. thermal derating chart-i hold /i trip (amps) type / typ ambient operating temperature ?40 c ?20 c 0 c 23 c 40 c 50 c 60 c 70 c 85 c PFMT.013.250.2 0.21/0.42 0.18/0.37 0.16/0.31 0.13/0.26 0.10/0.23 0.09/0.18 0.08/0.15 0.07/0.12 0.05/0.10 PFMT.013.250.a.2 0.21/0.42 0.18/0.37 0.16/0.31 0.13/0.26 0.10/0.23 0.09/0.18 0.08/0.15 0.07/0.12 0.05/0.10 PFMT.013.250.b.2 0.21/0.42 0.18/0.37 0.16/0.31 0.13/0.26 0.10/0.23 0.09/0.18 0.08/0.15 0.07/0.12 0.05/0.10 PFMT.013.250.c.2 0.21/0.42 0.18/0.37 0.16/0.31 0.13/0.26 0.10/0.23 0.09/0.18 0.08/0.15 0.07/0.12 0.05/0.10 dimensions in mm/inches type / typ max. oper. max. interrupt hold current / initial resistance / one hour nom. power voltage / ratings / post-trip dissipation restistance / volts volts amps amps ohms ohms ohms watts at at / bei 23 ?c at / bei 23 ?c at / bei 23 ?c at / bei 23 ?c 650 v / 23 ?c max. max. i h min. max. max. PFMT.013.250.2 60 250 3.0 0.13 6.5 12.0 20.0 3.3 PFMT.013.250.a.2 60 250 3.0 0.13 6.5 9.0 20.0 3.3 PFMT.013.250.b.2 60 250 3.0 0.13 9.0 12.0 20.0 3.3 PFMT.013.250.c.2 60 250 3.0 0.13 7.0 10.0 20.0 3.3 maximum package body temperature (220 ?c) melting temperature of solder (183 ?c) 2 minutes or more preheat flux activation reflow cool 10? to 20 c per second less than 120 ?c per second 300 250 200 150 100 50 0 0 30 60 100 150 200 250 temperature (? c) / t time (seconde) (s) packaged: tape and reel: 2000 pcs. per reel
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