NTC Inrush Current Limiters Thermistors NF 08 - 10 - 13 - 15 - 20 (For more details see also the catalog dedicated to this range) OUTLINE DRAWINGS D millimeters (inches) e H1 Notes 3mm max. H H1 I LS d Straight leads (Suffix - - or HB) Internal kink (Suffix HL or 1N) Y kink (Suffix HY or 2B) 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. DIMENSIONS Type NF08* NF08 NF10* NF10 NF13 NF15 NF20 millimeters (inches) D max mm 9.5 (.374) 9.5 (.374) 11.5 (.453) 11.5 (.453) 15.0 (.591) 17.0 (.669) 22.0 (.866) e max mm 5.0 (.197) 5.0 (.197) 5.0 (.197) 5.0 (.197) 6.0 (.236) 6.0 (.236) 6. (.236) H max mm 13.0 (.512) 13.0 (.512) 15.0 (.591) 15.0 (.591) 18.0 (.709) 20.0 (.787) 25.0 (.984) H1 max mm 16.0 (.630) 16.0 (.630) 18.0 (.709) 18.0 (.709) 22.0 (.866) 24.0 (.945) 29.0 (1.142) I min mm 30 (1.181) 30 (1.181) 30 (1.181) 30 (1.181) 30 (1.181) 30 (1.181) 30 (1.181) d 0.02 mm 0.6 (.024) 0.8 (.031) 0.6 (.024) 0.8 (.031) 0.8 (.031) 1.0 (.039) 1.0 (.039) LS 0.8 mm 5.08 (.20) 7.62 (.03) 5.08 (.20) 7.62 (.30) 7.62 (.30) 7.62 (.30) 7.62 (.30) GENERAL CHARACTERISTICS Type NF08* NF08 NF10* NF10 NF13 NF15 NF20 Standard tolerance** % 20 20 20 20 20 20 20 Maximum operating TC -40 / +200 -40 / +200 -40 / +200 -40 / +200 -40 / +200 -40 / +200 -40 / +200 Max power 25C Watts 1.6 2.2 2.0 2.6 3.2 4.1 5.0 Thermal dissipation th (mW/K) 8 11 10 13 16 20 25 Thermal time constant C (s) 60 60 75 75 100 115 160 Heat capacity H (mJ/K) 480 660 750 975 1600 2300 4000 Packing bulk tape - * 0.6 mm copper wire and 5.08 mm leads spacing for those two types. ** Other tolerances available: L: 15, X: 25% SUFFIXES FOR BULK PACKING (Suffixes for taping: see page 54-55) -HB HL straight leads 0.8 or 1 mm wire diameter and 7.62 lead spacing straight leads 0.6 mm wire diameter and 5.08 lead spacing internal kink 0.8 mm or 1 mm wire diameter and 7.62 lead spacing 1N HY 2B internal kink 0.6 mm wire diameter and 5.08 lead spacing Y kink 0.8 or 1 mm wire diameter and 7.62 lead spacing Y kink 0.6 mm wire diameter and 5.08 lead spacing HOW TO ORDER 26 NF13 AA 0509 M -- Type Inrush Current Limiters Resistance 5 k Tolerance M (20%) Suffix Bulk, Straight Leads (See illustration above) TPC Table of Values NF 08 - 10 - 13 - 15 - 20 cUL * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Ceramic Disc o (mm) 08 08 10 10 13 15 20 Part number reference Type NF08AA0509MHB NF08AA0809MHB NF08AA0100MHB NF08AA0150MHB NF08AA0330MHB NF08AA0509M - NF08AA0809M - NF08AA0100M - NF08AA0150M - NF08AA0330M - NF10AA0259MHB NF10AA0409MHB NF10AA0509MHB NF10AA0809MHB NF10AA0100MHB NF10AA0160MHB NF10AA0200MHB NF10AA0250MHB NF10AA0500MHB NF10AA0800MHB NF10AA0121MHB NF10AA0259M - NF10AA0409M - NF10AA0509M - NF10AA0809M - NF10AA0100M - NF10AA0160M - NF10AA0200M - NF10AA0250M - NF10AA0500M - NF10AA0800M - NF10AA0121M - NF13AA0259M - NF13AA0509M - NF13AA0709M - NF13AA0809M - NF13AA0100M - NF13AA0150M - NF13AA0220M - NF13AA0330M - NF13AA0400M - NF13AA0600M - NF15AA0139M - NF15AA0159M- NF15AA0259M - NF15AA0309M - NF15AA0409M - NF15AA0509M - NF15AA0609M - NF15AA0709M - NF15AA0809M - NF15AA0100M - NF15AA0120M - NF15AA0160M - NF15AA0200M - NF15AA0250M - NF15AA0330M - NF15AA0400M - NF15AA0470M - NF20AA0109M - NF20AA0259M - NF20AA0409M - NF20AA0509M - NF20AA0100M - NF20AA0150M - NF20AA0330M - - Zero power resistance R25C () 5.0 8.0 10.0 15.0 33.0 5.0 8.0 10.0 15.0 33.0 2.5 4.0 5.0 8.0 10.0 16.0 20.0 25.0 50.0 80.0 120.0 2.5 4.0 5.0 8.0 10.0 16.0 20.0 25.0 50.0 80.0 120.0 2.5 5.0 7.0 8.0 10.0 15.0 22.0 33.0 40.0 60.0 1.3 1.5 2.5 3.0 4.0 5.0 6.0 7.0 8.0 10.0 12.0 16.0 20.0 25.0 33.0 40.0 47.0 1.0 2.5 4.0 5.0 10.0 15.0 33.0 Max steady stade current Iss max 25C (A) 2.9 2.3 2.1 1.8 1.3 3.4 2.7 2.5 2.1 1.5 4.5 3.6 3.3 2.6 2.5 2.0 1.9 1.7 1.4 1.1 1.0 5.2 4.1 3.8 3.0 2.8 2.3 2.1 2.0 1.6 1.3 1.2 5.7 4.2 3.7 3.6 3.3 2.8 2.3 2.2 2.0 1.9 8.9 8.3 6.6 6.1 5.5 4.9 4.7 4.3 4.2 3.7 3.5 3.0 3.1 2.8 2.5 2.3 2.3 11.4 7.8 6.4 5.9 4.3 4.0 3.1 Resistance at max current Riss max () 0.20 0.30 0.37 0.50 0.97 0.20 0.30 0.37 0.50 0.97 0.10 0.16 0.19 0.30 0.34 0.50 0.59 0.69 1.07 1.60 1.90 0.10 0.16 0.19 0.30 0.34 0.50 0.59 0.69 1.07 1.60 1.90 0.10 0.19 0.24 0.25 0.30 0.41 0.61 0.70 0.80 0.95 0.05 0.06 0.09 0.11 0.13 0.17 0.19 0.22 0.24 0.30 0.33 0.44 0.43 0.53 0.66 0.80 0.74 0.04 0.08 0.13 0.15 0.28 0.32 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 TPC 27 NTC Inrush Current Limiters Thermistors Application Guide 1 - HOW TO DETERMINE THE MAXIMUM STEADY STATE CURRENT OF NF THERMISTORS? * If the ambient temperature is 25C: the current is given in table page 27. * If the ambient temperature is different from 25C: the current at 25C must be derated as specified in the graph below. Example: maximum steady state current of NF13AA0100M at 60C ambient: ISSmax25 x 0.9 = 3.0 A. Derating of maximum steady state current with ambient temperature 1.00 3 - HOW TO CALCULATE THE WORKING POINT OF NF THERMISTOR AT A DIFFERENT AMBIENT TEMPERATURE THAN 25C? Example: NF13AA0100M ISS = 3 A, Tambient = TA = 60C * RT ISS2 = d (T-TA) and thus T= RT ISS2 + TA d * As RT 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, d = 16 mW/K (see page 26) Iss max (T) /Iss max (25C) RATIO therefore, the equation becomes: T = 562.5 RT + 60 0.80 Not recommended for permanent use from the RT curve page 30 we find RT starting from T: 0.60 T (C) 0.40 0.20 RT () 562.5 RT + 60 (C) 185 0.28 217 190 0.26 206 195 0.24 195 200 0.22 184 0.00 -40 -20 0 20 40 60 80 100 120 140 160 180 200 220 AMBIENT TEMPERATURE (C) 2 - HOW TO CALCULATE THE WORKING TEMPERATURE OF NF THERMISTOR? The working temperature of this NF thermistor is about 195C when operating under ISS = 3 A and TA = 60C (this temperature is the one for which we have T = 562.5 RT + 60). Important: A discrepancy may exist between practice and theory due to the tolerance of the thermistor (20% usually). Example: NF08AA0330M Tambient = 25C ISS = 0.2 A, * From the graph V (I) page 29, we find VSS = 2.2 V therefore, RSS = 11 * From the graph R(T), page 29, at R = 11 , we find T 65C 28 TPC NTC Inrush Current Limiters Thermistors Voltage-Current and Resistance-Temperature Characteristics TYPICAL VOLTAGE/CURRENT CHARACTERISTICS FOR TYPE NF08 10.000 1.6 W for the suffix HB 2.2 W 33 15 10 8 5 Voltage (V) 1.000 0.100 0.010 0.010 0.100 1.000 10.000 Current (A) TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTICS FOR TYPE NF08 1000.00 Resistance (Ohm) 100.00 10.00 1.00 33 15 10 8 5 0.10 -50 0 50 100 150 200 250 Temperature ( C) TPC 29 NTC Inrush Current Limiters Thermistors Voltage-Current and Resistance-Temperature Characteristics TYPICAL VOLTAGE/CURRENT CHARACTERISTICS FOR TYPE NF10 TYPICAL VOLTAGE/CURRENT CHARACTERISTICS FOR TYPE NF13 10.000 10.000 2.6 W 120 80 50 25 20 16 10 8 5 4 2.5 Voltage (V) 1.000 3.2 W 60 40 33 22 15 10 8 7 5 2.5 1.000 Voltage (V) 2.0 W for the suffix HB 0.100 0.100 0.010 0.010 0.100 1.000 0.010 0.010 10.000 0.100 Current (A) TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTICS FOR TYPE NF10 1000.00 100.00 100.00 10.00 120 80 50 25 20 16 10 8 5 4 2.5 1.00 0.10 Resistance (Ohm) 1000.00 Resistance (Ohm) 10000.00 0.01 0 50 100 150 200 250 Temperature (C) 30 10.000 TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTICS FOR TYPE NF13 10000.00 -50 1.000 Current (A) 10.00 60 40 33 22 15 10 8 7 5 2.5 1.00 0.10 0.01 -50 0 50 100 Temperature (C) TPC 150 200 250 NTC Inrush Current Limiters Thermistors Voltage-Current and Resistance-Temperature Characteristics TYPICAL VOLTAGE/CURRENT CHARACTERISTICS FOR TYPE NF15 TYPICAL VOLTAGE/CURRENT CHARACTERISTICS FOR TYPE NF20 10.000 10.000 Voltage (V) 1.000 0.100 0.010 0.010 0.100 1.000 5.0 W 33 15 10 5 4 2.5 1 1.000 Voltage (V) 47 40 33 25 20 16 12 10 8 7 6 5 4 3 2.5 1.5 1.3 4.1 W 0.100 0.010 0.010 10.000 0.100 1.000 10.000 100.000 Current (A) Current (A) TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTICS FOR TYPE NF15 TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTICS FOR TYPE NF20 1000.00 10000.00 1000.00 100.00 47 40 33 25 20 16 12 10 8 7 6 5 4 3 2.5 1.5 1.3 10.00 1.00 0.10 0.01 -50 0 50 100 150 200 Resistance (Ohm) Resistance (Ohm) 100.00 250 10.00 1.00 33 15 10 5 4 2.5 1 0.10 0.01 -50 0 50 100 150 200 250 Temperature (C) Temperature (C) TPC 31