mf72 power ntc thermistor
dimensions (mm) power ntc thermistor. the mf72 series power ntc thermistors provide inrush current suppression for sensitive electronics. connecting a mf72 in series with the power source will limit the current surges typically created at turn on. once the circuit is energized the resistance of the mf72 will decrease rapidly to a very low value, power consumption can be ignored and there will be no ef fect on normal operating current. using the mf72 power ntc thermistor is a most cost-ef fective way to curb surge current and protect sensitive electronics from damage. mf72 specification part no. / dim(mm) / sym dmax tmax d +/- 0.05 fig. ii / i f 1 +/-1 fig. ii / i f 2 +/-1.5 fig. ii / i straight lead wire curved lead wire a +/-.5 lmin. b l 2 +/-2 mf72- ?d5 7 5 0.6 / 0.45 5 / 2.5 3 25 * 17/5 8/5 1.65 mf72- ?d7 9 5 0.6 5 3 25 17/5 8/5 1.9 mf72- ?d9 1 1 5.5 0.8 / 0.6 7.5 / 5 5 / 3 25 17/5 8/5 2.3 mf72- ? d11 13 5.5 0.8 7.5 / 5 5 / 3 25 17/5 8/5 2.6 mf72- ?d13 15.5 6 0.8 7.5 5 25 17/5 8/5 2.6 mf72- ?d15 17.5 6 0.8 10 / 7.5 5 25 17/5 8/5 2.8 mf72- ?d20 22.5 7 1.0 10 / 7.5 / 25 * / / 3.5 mf72- ?d25 27.5 8 1.0 10 / 25 * / / 3.5 remark b, 17/5 17 indicates the long bent lead wire, 5 indicates the short bent lead wire (fig. iii) illustration: in general, the long bent lead wire is used, see figure ii * straight leads are standard add suf fix l + fig. # to specify optional leads.
part no. r 25 (?) max. steady state current (a) approx. r of max. current (?) d issip. coef. (mw/oc) thermal time constant (s) max. load capacitance in uf ul 1 20 vac 240 vac mf72-5d5 5 1 0.353 6 20 188 47 mf72-10d5 10 0.7 0.771 6 20 188 47 mf72-60d5 60 0.3 1.878 6 18 188 47 mf72-200d5 200 0.1 18.70 6 18 88 22 mf72-5d7 5 2 0.283 10 30 224 56 mf72-8d7 8 1 0.539 9 28 224 56 mf72-10d7 10 1 0.616 9 27 224 56 mf72-12d7 12 1 0.816 9 27 224 56 mf72-16d7 16 0.7 1.003 9 27 224 56 mf72-22d7 22 0.6 1.108 9 27 224 56 mf72-33d7 33 0.5 1.485 10 28 188 47 mf72-200d7 200 0.2 1 1.65 11 28 188 47 mf72-3d9 3 4 0.120 1 1 35 272 68 mf72-4d9 4 3 0.190 1 1 35 272 68 mf72-5d9 5 3 0.210 1 1 34 272 68 mf72-6d9 6 2 0.315 1 1 34 272 68 mf72-8d9 8 2 0.400 1 1 32 400 100 mf72-10d9 10 2 0.458 1 1 32 400 100 mf72-12d9 12 1 0.652 1 1 32 400 100 mf72-16d9 16 1 0.802 1 1 31 400 100 mf72-20d9 20 1 0.864 1 1 30 600 150 mf72-22d9 22 1 0.950 1 1 30 600 150 mf72-30d9 30 1 1.022 1 1 30 600 150 mf72-33d9 33 1 1.124 1 1 30 600 150 mf72-50d9 50 1 1.252 1 1 30 600 150 mf72-60d9 60 0.8 1.502 1 1 30 600 150 mf72-80d9 80 0.8 2.010 1 1 30 272 68 application can be installed into the power circuits of: ? power supplies and inverters ? uninterruptible power supplies ? energy saving lamps ? electronic ballasts ? filament protection of various types of lamps ? some types of heaters ? for higher power circuits ask about the mf73 and mf74 series surge suppressors. characteristics ? small size and fast response ? high power handling capability ? fast response to surge current ? high material constant (b value) ? low residual resistance ? wide operating temperature range -55 to +200c ? r25 allowable tolerance is 20% ? long-term stability and reliability ? ul 1434 file# e241319 ? cqc file# 04001010556 main techno-parameter operating temperature: -55 to 200oc part no. r 25 (?) max. steady state current (a) approx. r of max. current (?) d issip. coef. (mw/oc) thermal time constant (s) max. load capacitance in uf ul 1 20 vac 240 vac mf72-120d9 120 0.8 3.015 1 1 30 272 68 mf72-200d9 200 0.5 5.007 1 1 32 188 47 mf72-400d9 400 0.2 30.30 1 1 32 188 47 mf72-2.5d1 1 2.5 5 0.095 13 43 600 150 mf72-3d1 1 3 5 0.100 13 43 600 150 mf72-4d1 1 4 4 0.150 13 44 600 150 mf72-5d1 1 5 4 0.156 13 45 600 150 mf72-6d1 1 6 3 0.240 13 45 880 220 mf72-8d1 1 8 3 0.255 14 47 880 220 mf72-10d1 1 10 3 0.275 14 47 880 220 mf72-12d1 1 12 2 0.462 14 48 880 220 mf72-16d1 1 16 2 0.470 14 50 880 220 mf72-20d1 1 20 2 0.512 15 52 880 220 mf72-22d1 1 22 2 0.563 15 52 880 220 mf72-30d1 1 30 1.5 0.667 15 52 880 220 mf72-33d1 1 33 1.5 0.734 15 52 880 220 mf72-50d1 1 50 1.5 1.021 15 52 880 220 mf72-60d1 1 60 1.5 1.215 15 52 880 220 mf72-80d1 1 80 1.2 1.656 15 52 600 150 mf72-1.3d13 1.3 7 0.062 13 60 880 220 mf72-1.5d13 1.5 7 0.073 13 60 880 220 mf72-2.5d13 2.5 6 0.088 13 60 880 220 mf72-3d13 3 6 0.092 14 60 880 220 mf72-4d13 4 5 0.120 15 67 880 220 mf72-5d13 5 5 0.125 15 68 880 220 mf72-6d13 6 4 0.170 15 65 880 220 mf72-7d13 7 4 0.188 15 65 1320 330
8415 mountain sights avenue ? montreal (quebec), h4p 2b8, canada tel: (514) 739-3274 ? 1-800-561-7207 ? fax: (514) 739-2902 ? e-mail: sales@cantherm.com website: www.cantherm.com | division of microtherm 2012ov m72 c us part no. () max. stea state current () pprox. of max. current () d issip. coef. (mwc) thermal time constant (s) max. oa capacitance in uf c c mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . . mf-d . mf-d . . mf-.d . . mf-.d . . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . . operating t emperature: -55 to 200oc m72-0.7d25 0.7 12 0.014 30 120 2240 560 m72-1.5d25 1.5 10 0.027 30 121 2240 560 m72-3d25 3 9 0.044 32 124 2240 560 m72-5d25 5 8 0.070 32 125 2720 680 m72-8d25 8 7 0.1 14 33 125 2720 680 m72-10d25 10 7 0.130 32 125 2720 680 m72-12d25 12 6 0.156 32 126 3280 820 m72-16d25 16 6 0.160 35 126 3280 820 note: unless otherwise specified, the allowable tolerance of r 25 is +/- 20% specifications may change without notice. part no. () max. stea state current () pprox. of max. current () d issip. coef. (mwc) thermal time constant (s) max. oa capacitance in uf c c mf-d . mf-d . . mf-.d . . mf-.d . . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . mf-d . main techno-parameter (cont.)
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