Resettable Ptc Products Page 123 Resettable PTC Products

POLY-FUSE Resettable PTCs 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/22/17 Axial Lead Battery Strap Type > LR Series The new LR Series device provides reliable, noncycling protection against overcharging and short circuits events for rechargeable battery cells where resettable protection is desired. Agency Approvals Electrical Characteristics Part Number I hold (A) I trip (A) V max (Vdc) I max (A) P d max. (W) Maximum Time To Trip Resistance Agency Approvals Current (A) Time (Sec.) R min ( ) R typ ( ) R 1max ( ) 15LR260 2.6 5.8 15 100 2.5 13.00 5.00 0.020 0.042 0.063 X 15LR380 3.8 8.3 15 100 2.5 19.00 5.00 0.013 0.026 0.037 X 20LR450 4.5 8.9 20 100 2.5 22.50 5.00 0.011 0.020 0.028 X 20LR730 7.3 14.1 20 100 3.3 30.00 5.00 0.006 0.012 0.015 X I hold = Hold current: maximum current device will pass without tripping in 20C still air. I trip = Trip current: minimum current at which the device will trip in 20C 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 (V max ) P d = Power dissipated from device when in the tripped state at 20C still air. R min = Minimum resistance of device in initial (un-soldered) state. R typ = Typical resistance of device in initial (un-soldered) state. R 1max = Maximum resistance of device at 20C measured one hour after tripping or reflow soldering of 260C for 20 sec. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. Description Features Applications RoHS compliant and lead-free Weldable Nickel terminals Slim, low profile design Compact design saves board space Low resistance Fast trip time Rechargeable battery cell protection Portable Computers Camcorders Ambient Operation Temperature -40C -20C 0C 20C 40C 50C 60C 70C 85C Part Number Hold Current (A) 15LR260 3.80 3.40 3.10 2.60 2.20 2.00 1.90 1.70 1.40 15LR380 5.50 4.90 4.40 3.80 3.30 3.00 2.80 2.50 2.10 20LR450 6.50 5.80 5.30 4.50 3.90 3.60 3.30 2.90 2.50 20LR730 10.60 9.50 8.60 7.30 6.30 5.70 5.40 4.70 4.00 Temperature Rerating RoHS LR Series AGENCY AGENCY FILE NUMBER E183209 R50119583 Additional Information Datasheet Samples Resources Samples

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