Positive Temperature Coefficient devices (PTCs) 2017 by Littelfuse

More catalogs by Littelfuse | Positive Temperature Coefficient devices (PTCs) 2017 | 128 pages | 2017-11-12

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Page 91 of Positive Temperature Coefficient devices (PTCs) 2017

poly-fuse® resettable ptcs radial leaded 72r series 72r series rohs description the 72r series is designed to provide overcurrent protection to 72vdc maximum voltage with a maximum 40a short circuit rating features • 72vdc max voltage w/max • resettable feature 40a short circuit rating • ideal for a broad range of • rohs compliant lead-free general electronics using a and halogen free low voltage power supply agency approvals applications agency •l  oad protection on wide • computer peripherals range of low voltage power • general electronics supplies agency file number e183209 • computers r50119318 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 72 72r040x 0.40 0.80 72r050x 0.50 1.00 72r065x 0.65 72r075x 0.75 72r090x 72r110x 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 40 0.49 1.50 3.00 0.880 2.100 x x 72 40 0.56 2.00 3.80 0.550 1.290 x x 72 40 0.77 2.50 4.00 0.500 1.170 x x 1.30 72 40 0.88 3.25 5.30 0.310 0.720 x x 1.50 72 40 0.92 3.75 6.30 0.250 0.600 x x 0.90 1.80 72 40 0.99 4.50 7.20 0.200 0.470 x x 1.10 2.20 72 40 1.50 5.50 8.20 0.150 0.380 x x 72r135x 1.35 2.70 72 40 1.70 6.75 9.60 0.120 0.300 x x 72r160x 1.60 3.20 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 20°c still air i trip trip current minimum current at which the device will trip in 20°c still air 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 r 1max maximum resistance of device at 20°c measured one hour after tripping or reflow soldering of 260°c for 20 sec caution operation beyond the specified rating may result in damage and possible arcing and flame p d power dissipated from device when in the tripped state at 20°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 © 2015 littelfuse inc specifications are subject to change without notice revised 11/05/15