POLYFUSE® Resettable PTCs Radial Leaded > 72R Series 72R Series Description The 72R Series is designed to provide overcurrent protection to 72Vdc maximum voltage with a maximum 40A short circuit rating. Features t7EDNBYWPMUBHFXNBY t3FTFUUBCMFGFBUVSF 40A short circuit rating t*EFBMGPSBCSPBESBOHFPG t3P)4DPNQMJBOU-FBE'SFF general electronics using a and Halogen Free* low voltage power supply Agency Approvals Applications AGENCY t-PBEQSPUFDUJPOPOXJEF t$PNQVUFSQFSJQIFSBMT range of low voltage power t(FOFSBMFMFDUSPOJDT supplies AGENCY FILE NUMBER E183209 Electrical Characteristics Part Number I hold (A) I trip (A) V max (Vdc) I max (A) Pd typ. (W) 72R020X 0.20 0.40 72 40 72R025X 0.25 0.50 72 72R030X 0.30 0.60 72R040X 0.40 72R050X 0.50 72R065X 72R075X 72R090X 0.90 1.80 72R110X 1.10 2.20 72R135X 1.35 2.70 72R160X 1.60 3.20 Maximum Time To Trip Resistance Agency Approvals Current (A) Time (Sec.) R min (Ω) R 1max (Ω) 0.41 1.00 2.20 1.830 4.400 X X 40 0.45 1.25 2.50 1.250 3.000 X X 72 40 0.49 1.50 3.00 0.880 2.100 X X 0.80 72 40 0.56 2.00 3.80 0.550 1.290 X X 1.00 72 40 0.77 2.50 4.00 0.500 1.170 X X 0.65 1.30 72 40 0.88 3.25 5.30 0.310 0.720 X X 0.75 1.50 72 40 0.92 3.75 6.30 0.250 0.600 X X 72 40 0.99 4.50 7.20 0.200 0.470 X X 72 40 1.50 5.50 8.20 0.150 0.380 X X 72 40 1.70 6.75 9.60 0.120 0.300 X X 72 40 1.90 8.00 11.40 0.090 0.220 X X 72R185X 1.85 3.70 72 40 2.10 9.25 12.60 0.080 0.190 X X 72R250X 2.50 5.00 72 40 2.50 12.50 15.60 0.050 0.130 X X 72R300X 3.00 6.00 72 40 2.80 15.00 19.80 0.040 0.100 X X 72R375X 3.75 7.50 72 40 3.20 18.75 24.00 0.030 0.080 X X I hold = Hold current: maximum current device will pass without tripping in 23°C still air. R 1max = Maximum resistance of device at 23°C measured one hour after tripping or reflow soldering of 260°C for 20 sec. I trip = Trip current: minimum current at which the device will trip in 23°C still air. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. V max = Maximum voltage device can withstand without damage at rated current (I max) I max = Maximum fault current device can withstand without damage at rated voltage (Vmax) P d = Power dissipated from device when in the tripped state at 23°C still air. R min = Minimum resistance of device in initial (un-soldered) state. * Effective January 1, 2010, all 72R PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 72R PTC products may continue to be sold, until supplies are depleted. © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. 91 72R Series Revised: July 12, 2010 72R Series t$PNQVUFST R50119318 POLYFUSE® Resettable PTCs Radial Leaded > 72R Series Temperature Rerating Ambient Operation Temperature -40°C -20°C 0°C 23°C Part Number 40°C 50°C 60°C 70°C 85°C 0.08 Hold Current (A) 72R020X 0.31 0.27 0.24 0.20 0.16 0.14 0.13 0.11 72R025X 0.39 0.34 0.30 0.25 0.20 0.18 0.16 0.14 0.10 72R030X 0.47 0.41 0.36 0.30 0.24 0.22 0.19 0.16 0.12 72R040X 0.62 0.54 0.48 0.40 0.32 0.29 0.25 0.22 0.16 72R050X 0.78 0.68 0.60 0.50 0.41 0.36 0.32 0.27 0.20 72R065X 1.01 0.88 0.77 0.65 0.53 0.47 0.41 0.35 0.26 72R075X 1.16 1.02 0.89 0.75 0.61 0.54 0.47 0.41 0.30 72R090X 1.40 1.22 1.07 0.90 0.73 0.65 0.57 0.49 0.36 72R110X 1.71 1.50 1.31 1.10 0.89 0.79 0.69 0.59 0.44 72R135X 2.09 1.84 1.61 1.35 1.09 0.97 0.85 0.73 0.54 72R160X 2.48 2.18 1.90 1.60 1.30 1.15 1.01 0.86 0.64 72R185X 2.87 2.52 2.20 1.85 1.50 1.33 1.17 1.00 0.74 72R250X 3.88 3.40 2.98 2.50 2.03 1.80 1.58 1.35 1.00 72R300X 4.65 4.08 3.57 3.00 2.43 2.16 1.89 1.62 1.20 72R375X 5.81 5.10 4.46 3.75 3.04 2.70 2.36 2.03 1.50 Temperature Rerating Curve 0.20A 0.25A 0.30A 0.40A 0.50A 0.65A 0.75A 0.90A 1.10A 1.35A 1.60A 1.85A 2.50A 3.00A 3.75A Average Time Current Curves 72R 150% Percentage of Rated Current 100 170% Time in Seconds 10 130% 110% 90% 70% 50% 30% 1 10% -40 -30 -20 -10 0 10 20 30 40 Temperature (°C) 50 60 70 80 0.1 0.01 0.1 1 10 100 Current in Amperes The average time current curves and Temperature Rerating curve performance is affected by a number or variables, and these curves provided as guidance only. Customer must verify the performance in their application. 92 72R Series Revised: July 12, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. POLYFUSE® Resettable PTCs Radial Leaded > 72R Series Soldering Parameters - Wave Soldering Refer to the condition recommended by the flux manufacturer. Pre-Heating Zone Max. ramping rate should not exceed 4°C/Sec. Max. solder temperature should not exceed 260°C Cooling Zone Cooling by natural convection in air. Cooling 220 Temperature (°C) Soldering Zone Soldering 260 Preheating 190 160 0 60 min. 5 max. Time(s) Environmental Specifications Lead Material 0.20-0.40A: Tin-plated Copper clad steel 0.50-3.75A: Tin-plated Copper Operating/Storage Temperature -40°C to +85°C Soldering Characteristics Solderability per MIL–STD–202, Method 208E Maximum Device Surface Temperature in Tripped State 125°C Insulating Material Cured, flame retardant epoxy polymer meets UL 94V-0 requirements. Passive Aging +85°C, 1000 hours -/+5% typical resistance change Lead Solderability Marked with ‘LF’, voltage, current rating, and date code. Humidity Aging +85°C, 85% R.H. 1000 hours -/+5% typical resistance change Thermal Shock +85°C to -40°C 10 times -/+5% typical resistance change Solvent Resistance MIL–STD–202, Method 215F Moistrue Sesitivity Level Level 1, J–STD–020C © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. 93 72R Series Revised: July 12, 2010 72R Series Physical Specifications POLYFUSE® Resettable PTCs Radial Leaded > 72R Series Dimensions Part Marking System E A Single Sided Marking Littelfuse Trademark Voltage Rating Current Rating 72 020X XXXX Date Code (Contact Littelfuse for additional information) B D C A Part Number B C D E Physical Characteristics Inches mm Inches mm Inches mm Inches mm Inches mm Max. Max. Max. Max. Typ. Typ. Min. Min. Max. Max. Inches Lead (dia) mm 72R020X 0.29 7.4 0.46 11.7 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/CuFe 72R025X 0.29 7.4 0.50 12.7 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/CuFe 72R030X 0.29 7.4 0.50 12.7 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/CuFe 72R040X 0.30 7.6 0.53 13.5 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/CuFe 72R050X 0.31 7.9 0.54 13.7 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/Cu 72R065X 0.37 9.4 0.57 14.5 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/Cu 72R075X 0.40 10.2 0.60 15.2 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/Cu Material 72R090X 0.44 11.2 0.62 15.8 0.20 5.1 0.30 7.6 0.12 3.1 0.02 0.51 Sn/Cu 72R110X 0.51 13.0 0.72 18.2 0.20 5.1 0.30 7.6 0.12 3.1 0.03 0.81 Sn/Cu 72R135X 0.53 13.58 0.78 19.8 0.20 5.1 0.30 7.6 0.12 3.1 0.03 0.81 Sn/Cu 72R160X 0.60 15.36 0.85 21.6 0.20 5.1 0.30 7.6 0.12 3.1 0.03 0.81 Sn/Cu Sn/Cu 72R185X 0.66 16.76 0.91 23.0 0.20 5.1 0.30 7.6 0.12 3.1 0.03 0.81 72R250X 0.78 19.93 1.03 26.2 0.40 10.2 0.30 7.6 0.12 3.1 0.03 0.81 Sn/Cu 72R300X 0.91 23.11 1.15 29.3 0.40 10.2 0.30 7.6 0.12 3.1 0.03 0.81 Sn/Cu 72R375X 1.04 26.3 1.22 31.1 0.40 10.2 0.30 7.6 0.12 3.1 0.03 0.81 Sn/Cu 94 72R Series Revised: July 12, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. POLYFUSE® Resettable PTCs Radial Leaded > 72R Series Part Ordering Number System 72 R 090 X PR PACKAGING STYLE BLANK: Bulk R: Tape & Ammo SERIES QUANTITY CODE: F=200 H=100 M=1000 P=2000 U=500 TYPE: X (72VDC) I HOLD CURRENT CODE (See to Electrical Characteristics table) R: RADIAL VOLTAGE RATING (VDC) Part Number 72R020X 72R025X 72R030X 72R040X 72R050X 72R065X 72R075X 72R090X 72R110X 72R135X 72R160X 72R185X 72R250X 72R300X 72R375X Ordering Part Number 72R020XU 72R020XPR 72R025XU 72R025XPR 72R030XU 72R030XPR 72R040XU 72R040XPR 72R050XU 72R050XPR 72R065XU 72R065XPR 72R075XU 72R075XPR 72R090XU 72R090XPR 72R110XU 72R110XMR 72R135XF 72R135XMR 72R160XF 72R160XMR 72R185XF 72R185XMR 72R250XF 72R250XMR 72R300XF 72R300XMR 72R375XH I hold (A) I hold Code 0.20 020 0.25 025 0.30 030 0.40 040 0.50 050 0.65 065 0.75 075 0.90 090 1.10 110 1.35 135 1.60 160 1.85 185 2.50 250 3.00 300 3.75 375 © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. Packaging Option Quantity Quantity & Packaging Codes Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 2000 PR Bulk 500 U Tape and Ammo 1000 MR Bulk 200 F Tape and Ammo 1000 MR Bulk 200 F Tape and Ammo 1000 MR Bulk 200 F Tape and Ammo 1000 MR Bulk 200 F Tape and Ammo 1000 MR Bulk 200 F Tape and Ammo 1000 MR Bulk 100 H 72R Series Packaging 95 72R Series Revised: July 12, 2010 POLYFUSE® Resettable PTCs Radial Leaded > 72R Series Tape and Ammo Specifications Devices taped using EIA468-B/IE286-2 standards. See table below and Figure 1 for details. Dimensions Dimension EIA Mark IEC Mark Dim. (mm) Tol. (mm) Carrier tape width W W 18 –0.5 / +1.0 Hold down tape width W4 W0 11 min. Top distance between tape edges W6 W2 3 max. Sprocket hole position W5 W1 9 –0.5 / +0.75 Sprocket hole diameter* D0 D0 4 –0.32 / +0.2 Abscissa to plane (straight lead) H H 18.5 –/+ 3.0 Abscissa to plane (kinked lead) H0 H0 16 –/+ 0.5 Abscissa to top 72R020X–72R090X H1 H1 32.2 max. Abscissa to top 72R110X–72R300X H1 47.5 max. Overall width without lead protrusion: 72R020X–72R090X C1 42.5 max. Overall width without lead protrusion: 72R110X–72R300X Overall width with lead protrusion: 72R020X–72R090X 57 C2 Overall width with lead protrusion: 72R110X–72R300X 43.2 max. 58 Lead protrusion L1 l1 1.0 max. Protrusion of cut out L L 11 max. Protrusion beyond hold–down tape l2 l2 Not specified Sprocket hole pitch: 72R020X–72R090X P0 P0 12.7 –/+ 0.3 Sprocket hole pitch: 72R110X–72R300X P0 P0 25.4 –/+ 0.5 20 consecutive. –/+ 1 Pitch tolerance Device pitch: 72R020X–72R090X 12.7 Device pitch: 72R110X–72R300X 25.4 Tape thickness t Tape thickness with splice t1 t Splice sprocket hole alignment 0.9 max. 2.0 max. 0 –/+ 0.3 Body lateral deviation Δh Δh 0 –/+ 1.0 Body tape plane deviation Δp Δp 0 –/+ 1.3 Ordinate to adjacent component lead*: 72R020X–72R090X P1 P1 3.81 –/+ 0.7 7.62 –/+ 0.7 Ordinate to adjacent component lead*: 72R110X–72R300X Lead spacing: 72R020X–72R185X F F 5.08 –/+ 0.8 Lead spacing: 72R250X–72R300X F F 10.18 –/+ 0.8 *Differs from EIA Specification 96 72R Series Revised: July 12, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. POLYFUSE® Resettable PTCs Radial Leaded > 72R Series Tape and Ammo Diagram Figure 1 Δh Δh Δh Δp Reference plane A1 H1 F A L B H0 W4 W5 W H1 C1 H C2 I2 L1 P0 D0 Direction of unreeling Cross section A - B 72R Series t © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. 97 72R Series Revised: July 12, 2010