29 ntc inrush current limiters thermistors nf 08 - 10 - 13 - 15 - 20 dimensions millimeters (inches) d max e max h max h1 max i min dls type mm mm mm mm mm ?.02 mm ?.8 mm (?.008) (?.030) nf08* 9.5 (.374) 5.0 (.197) 13.0 (.512) 16.0 (.630) 30 (1.181) 0.6 (.024) 5.08 (.20) nf08 9.5 (.374) 5.0 (.197) 13.0 (.512) 16.0 (.630) 30 (1.181) 0.8 (.031) 7.62 (.03) nf10* 11.5 (.453) 5.0 (.197) 15.0 (.591) 18.0 (.709) 30 (1.181) 0.6 (.024) 5.08 (.20) nf10 11.5 (.453) 5.0 (.197) 15.0 (.591) 18.0 (.709) 30 (1.181) 0.8 (.031) 7.62 (.30) nf13 15.0 (.591) 6.0 (.236) 18.0 (.709) 22.0 (.866) 30 (1.181) 0.8 (.031) 7.62 (.30) nf15 17.0 (.669) 6.0 (.236) 20.0 (.787) 24.0 (.945) 30 (1.181) 1.0 (.039) 7.62 (.30) nf20 22.0 (.866) 6. (.236) 25.0 (.984) 29.0 (1.142) 30 (1.181) 1.0 (.039) 7.62 (.30) general characteristics standard maximum max power thermal thermal time heat packing type tolerance** operating 25? dissipation constant capacity bulk tape % t? watts th (mw/k) c (s) h (mj/k) ? nf08* 20 -40 / +200 1.6 8 60 480 ? nf08 20 -40 / +200 2.2 11 60 660 ? nf10* 20 -40 / +200 2.0 10 75 750 - nf10 20 -40 / +200 2.6 13 75 975 ? nf13 20 -40 / +200 3.2 16 100 1600 ? nf15 20 -40 / +200 4.1 20 115 2300 - nf20 20 -40 / +200 5.0 25 160 4000 - (for more details see also the catalog dedicated to this range) outline drawings millimeters (inches) de h i 3mm max. d ls h1 notes h1 * 0.6 mm copper wire and 5.08 mm leads spacing for those two types. ** other tolerances available: l: ?5, x: ?5% notes: in case of adding strength to the lead wire from the side, it may occur crack and fragment at a part of pant leg. * 0.6 mm copper wire and 5.08 mm leads spacing for those two types. straight leads (suffix - - or hb) internal kink (suffix hl or 1n) y kink (suffix hy or 2b) how to order nf13 type aa inrush current limiters 0509 resistance 5 k ? m tolerance m (?0%) -- suffix bulk, straight leads (see illustration above) suffixes for bulk packing (suffixes for taping: see page 35) - - straight leads 0.8 or 1 mm wire diameter and 7.62 lead spacing hb straight leads 0.6 mm wire diameter and 5.08 lead spacing hl internal kink 0.8 mm or 1 mm wire diameter and 7.62 lead spacing 1n internal kink 0.6 mm wire diameter and 5.08 lead spacing hy y kink 0.8 or 1 mm wire diameter and 7.62 lead spacing 2b y kink 0.6 mm wire diameter and 5.08 lead spacing
30 table of values nf 08 - 10 - 13 - 15 - 20 ceramic part number zero power max steady resistance cul disc reference resistance stade current at max current ?(mm) t ype r 25? ( ? )i ss max 25? (a) r iss max ( ? ) * 08 nf08aa0509mhb 5.0 2.9 0.20 * nf08aa0809mhb 8.0 2.3 0.30 * nf08aa0100mhb 10.0 2.1 0.37 * nf08aa0150mhb 15.0 1.8 0.50 * nf08aa0330mhb 33.0 1.3 0.97 * 08 nf08aa0509m - - 5.0 3.4 0.20 * nf08aa0809m - - 8.0 2.7 0.30 * nf08aa0100m - - 10.0 2.5 0.37 * nf08aa0150m - - 15.0 2.1 0.50 * nf08aa0330m - - 33.0 1.5 0.97 * 10 nf10aa0259mhb 2.5 4.5 0.10 * nf10aa0409mhb 4.0 3.6 0.16 * nf10aa0509mhb 5.0 3.3 0.19 * nf10aa0809mhb 8.0 2.6 0.30 * nf10aa0100mhb 10.0 2.5 0.34 * nf10aa0160mhb 16.0 2.0 0.50 * nf10aa0200mhb 20.0 1.9 0.59 * nf10aa0250mhb 25.0 1.7 0.69 * nf10aa0500mhb 50.0 1.4 1.07 * nf10aa0800mhb 80.0 1.1 1.60 * nf10aa0121mhb 120.0 1.0 1.90 * 10 nf10aa0259m - - 2.5 5.2 0.10 * nf10aa0409m - - 4.0 4.1 0.16 * nf10aa0509m - - 5.0 3.8 0.19 * nf10aa0809m - - 8.0 3.0 0.30 * nf10aa0100m - - 10.0 2.8 0.34 * nf10aa0160m - - 16.0 2.3 0.50 * nf10aa0200m - - 20.0 2.1 0.59 * nf10aa0250m - - 25.0 2.0 0.69 * nf10aa0500m - - 50.0 1.6 1.07 * nf10aa0800m - - 80.0 1.3 1.60 * nf10aa0121m - - 120.0 1.2 1.90 * 13 nf13aa0259m - - 2.5 5.7 0.10 * nf13aa0509m - - 5.0 4.2 0.19 * nf13aa0709m - - 7.0 3.7 0.24 * nf13aa0809m - - 8.0 3.6 0.25 * nf13aa0100m - - 10.0 3.3 0.30 * nf13aa0150m - - 15.0 2.8 0.41 * nf13aa0220m - - 22.0 2.3 0.61 * nf13aa0330m - - 33.0 2.2 0.70 * nf13aa0400m - - 40.0 2.0 0.80 * nf13aa0600m - - 60.0 1.9 0.95 * 15 nf15aa0139m - - 1.3 8.9 0.05 * nf15aa0159m- - 1.5 8.3 0.06 * nf15aa0259m - - 2.5 6.6 0.09 * nf15aa0309m - - 3.0 6.1 0.11 * nf15aa0409m - - 4.0 5.5 0.13 * nf15aa0509m - - 5.0 4.9 0.17 * nf15aa0609m - - 6.0 4.7 0.19 * nf15aa0709m - - 7.0 4.3 0.22 * nf15aa0809m - - 8.0 4.2 0.24 * nf15aa0100m - - 10.0 3.7 0.30 * nf15aa0120m - - 12.0 3.5 0.33 * nf15aa0160m - - 16.0 3.0 0.44 * nf15aa0200m - - 20.0 3.1 0.43 * nf15aa0250m - - 25.0 2.8 0.53 * nf15aa0330m - - 33.0 2.5 0.66 * nf15aa0400m - - 40.0 2.3 0.80 * nf15aa0470m - - 47.0 2.3 0.74 * 20 nf20aa0259m - - 2.5 7.8 0.08 * nf20aa0409m - - 4.0 6.4 0.13 * nf20aa0509m - - 5.0 5.9 0.15 * nf20aa0100m - - 10.0 4.3 0.28 * nf20aa0150m - - 15.0 4.0 0.32 * nf20aa0330m - - 33.0 3.1 0.52 * cl/l approval (file e167822) . electrical performances for suffixes hl and hy are identical to the suffix - -. electrical performances for suffixes 1n and 2b are identical to the suffix hb
31 ntc inrush current limiters thermistors application guide 1 ?how to determine the maximum steady state current of nf thermistors? ? if the ambient temperature is 25?: the current is given in table page 30. if the ambient temperature is different from 25?: the current at 25? must be derated as specified in the graph below. example: maximum steady state current of nf13aa0100m at 60? ambient: i ss max25 x 0.9 = 3.0 a. derating of maximum steady state current with ambient temperature 2 ?how to calculate the working temperature of nf thermistor? example: nf08aa0330m i ss = 0.2 a, t ambient = 25? ? from the graph v (i) page 32, we find v ss = 2.2 v there- fore, r ss = 11 ? ? from the graph r(t), page 32, at r = 11 ? , we find t 65? 3 ?how to calculate the working point of nf thermistor at a different ambient temperature than 25?? example: nf13aa0100m i ss = 3 a, t ambient = t a = 60? r t i ss 2 = (t-t a ) and thus r t i ss 2 t = + t a ? as r t depends on t, this equation is quite complex to be solved by an algebraic way. the quickest manner to solve it is to operate by iterations: for nf13, = 16 mw/k (see page 29) therefore, the equation becomes: t = 562.5 r t + 60 from the r t curve page 33 we find r t starting from t: t (?) r t ( ? ) ? 562.5 r t + 60 (?) 185 0.28 217 190 0.26 206 195 0.24 195 200 0.22 184 the working temperature of this nf thermistor is about 195? when operating under i ss = 3 a and t a = 60? (this temperature is the one for which we have t = 562.5 r t + 60). important: a discrepancy may exist between practice and theory due to the tolerance of the thermistor (?0% usually). 1.00 0.80 0.60 0.40 0.20 0.00 -40 -20 0 20 40 60 80 ambient temperature ( c) iss max (t) /iss max (25 c) ratio 100 120 140 160 180 200 220 not recommended for permanent use
32 ntc inrush current limiters thermistors voltage-current and resistance-temperature characteristics typical voltage/current characteristics for type nf08 10.000 1.000 0.100 0.010 0.010 0.100 1.000 current (a) voltage (v) 10.000 1.6 w for the suffix hb 2.2 w 33 ? 15 ? 10 ? 8 ? 5 ? typical resistance/temperature characteristics for type nf08 resistance (ohm) 1000.00 100.00 10.00 1.00 0.10 -50 0 100 200 50 150 temperature ( c) 250 33 ? 15 ? 10 ? 8 ? 5 ?
33 10.000 1.000 0.100 0.010 0.010 0.100 1.000 current (a) voltage (v) 10.000 2.0 w for the suffix hb 2.6 w 120 ? 80 ? 50 ? 25 ? 20 ? 16 ? 10 ? 8 ? 5 ? 4 ? 2.5 ? typical resistance/temperature characteristics for type nf10 resistance (ohm) 10000.00 1000.00 100.00 10.00 1.00 0.10 0.01 -50 0 100 200 50 150 temperature ( c) 250 120 ? 80 ? 50 ? 25 ? 20 ? 16 ? 10 ? 8 ? 5 ? 4 ? 2.5 ? ntc inrush current limiters thermistors voltage-current and resistance-temperature characteristics typical voltage/current characteristics for type nf10 10.000 1.000 0.100 0.010 0.010 0.100 1.000 current (a) voltage (v) 10.000 3.2 w 60 ? 40 ? 33 ? 22 ? 15 ? 10 ? 8 ? 7 ? 5 ? 2.5 ? typical resistance/temperature characteristics for type nf13 resistance (ohm) 10000.00 1000.00 100.00 10.00 1.00 0.10 0.01 -50 0 100 200 50 150 temperature ( c) 250 60 ? 40 ? 33 ? 22 ? 15 ? 10 ? 8 ? 7 ? 5 ? 2.5 ? typical voltage/current characteristics for type nf13
34 10.000 1.000 0.100 0.010 0.010 0.100 1.000 current (a) voltage (v) 10.000 4.1 w 47 ? 40 ? 33 ? 25 ? 20 ? 16 ? 12 ? 10 ? 8 ? 7 ? 6 ? 5 ? 4 ? 3 ? 2.5 ? 1.5 ? 1.3 ? typical resistance/temperature characteristics for type nf15 10.000 1.000 0.100 0.010 0.0100.1001.000 current (a) voltage (v) 10.000100.000 5.0 w 33 15 10 5 4 2.5 ntc inrush current limiters thermistors voltage-current and resistance-temperature characteristics typical voltage/current characteristics for type nf15 resistance (ohm) 10000.00 1000.00 100.00 10.00 1.00 0.10 0.01 -50 0 100 200 50 150 temperature ( c) 250 47 ? 40 ? 33 ? 25 ? 20 ? 16 ? 12 ? 10 ? 8 ? 7 ? 6 ? 5 ? 4 ? 3 ? 2.5 ? 1.5 ? 1.3 ? typical resistance/temperature characteristics for type nf20 resistance (ohm) 1000.00 100.00 10.00 1.00 0.10 0.01 -500100200 50150 temperature ( c) 250 33 15 10 5 4 2.5 typical voltage/current characteristics for type nf20
35 packaging for automatic insertion ntc disc thermistors / nf series packaging and kink suffixes the following types can be ordered on tape either in ammopack (fan folder) or on reel in accordance with iec 286-2. types nf08 leads straight internal kink ??kink packaging ammopack reel ammopack reel ammopack reel ho = 16 da db dq dr d7 d5 ho = 19.5 dc dd ds dt d8 d6 de h i 3mm max. d ls h1 notes h1 0.6 (.024) 5.08 (0.20) types nf08 / 10 / 13 leads straight internal kink ??kink packaging ammopack reel ammopack reel ammopack reel ho = 16 ea en ec ef eq er ho = 19.5 eb ed de h i 3mm max. d ls h1 0.8 (0.31) notes 7.62 (0.30) h1 packaging quantities type ammopack reel bulk nf08* (5.08) 1000 1000 450 nf08 (7.62) 750 750 nf10* (5.08) 450 nf10 (7.62) 750 750 nf13 (7.62) 750 750 400 nf15 (7.62) 250 nf20 (7.62) 150 dimensions: millimeters (inches) dimensions: millimeters (inches)
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