46 siemens matsushita components 30 v, 120 c applications l overcurrent and short-circuit protection features l coated thermistor disk l manufacturers logo and type designation stamped on in white l low resistance l for rated currents of up to 2,5 a l ul approval (e69802) l vde approval (exception: c915) options l leadless disks and leaded disks without coating available upon request l thermistors with diameter b 11,0 mm are also available on tape max. operating voltage ( t a = 60 c) v max rated voltage v n switching cycles (typ.) n switching time at v max , i smax t s reference temperature (typ.) t ref resistance tolerance d r n operating temperature range ( v = 0) t op ( v = v max ) t op 30 12, 24 100 10 120 25 % C 40/+ 125 0/60 v v s c c c type i n ma i s ma i smax ( v = v max ) a i r (typ.) ( v = v max ) ma i r (typ.) ( v =12 v) ma r n w r min w ordering code c 915 2500 5000 15,0 220 490 0,2 0,1 b59915-c120-a70 c 935 1800 3600 10,0 170 380 0,3 0,2 b59935-c120-a70 c 945 1300 2600 8,0 115 250 0,45 0,3 b59945-c120-a70 c 955 850 1700 5,5 80 175 0,8 0,5 b59955-c120-a70 c 965 600 1200 4,3 70 150 1,2 0,7 B59965-C120-A70 c 975 450 900 3,0 60 130 1,8 1,1 b59975-c120-a70 c 985 250 500 1,0 45 100 4,6 2,7 b59985-c120-a70 c 995 120 240 0,7 25 54 13 7,8 b59995-c120-a70 tpt0647-v 3,5 max. 35 min. ? d b h 5 dimensions (mm) type b max ? dh max c 915 26,0 0,8 29,5 c 935 22,0 0,6 25,5 c 945 17,5 0,6 21,0 c 955 13,5 0,6 17,0 c 965 11,0 0,6 14,5 c 975 9,0 0,6 12,5 c 985 6,5 0,6 10,0 c 995 4,0 0,5 7,5 overload protection disks b599*5 c 915 c 995
siemens matsushita components 47 characteristics (typical) ptc resistance r ptc versus ptc temperature t ptc (measured at low signal voltage) ptc current i ptc versus ptc voltage v ptc (measured at 25 c in still air) switching time t s versus switching current i s (measured at 25 c in still air) rated current i n versus ambient temperature t a (measured in still air) b599*5 c 915 c 995
48 siemens matsushita components characteristics (typical) ptc resistance r ptc versus ptc temperature t ptc (measured at low signal voltage) ptc current i ptc versus ptc voltage v ptc (measured at 25 c in still air) switching time t s versus switching current i s (measured at 25 c in still air) rated current i n versus ambient temperature t a (measured in still air) b599*5 c 915 c 995
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