15LT070U

POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > LT Series LT Series Description The new LT Series device provides reliable, noncycling protection against overcharging and short circuits events for rechargeable battery cells where resettable protection is desired. Features • RoHS compliant and lead–free • Weldable Nickel terminals • Compact design saves board space Agency Approvals AGENCY • Low resistance • Provides overcurrent protection at 100°C trip temperature AGENCY FILE NUMBER Applications E183209 • Rechargeable battery cell protection - Mobile phones - Laptop computers R50119583 Electrical Characteristics I trip (A) V max (Vdc) I max (A) Pd max. (W) Maximum Time To Trip Agency Approvals Resistance Current (A) Time (Sec.) R min (Ω) R typ (Ω) R 1max (Ω) 15LT070 0.7 1.5 15 100 1.0 3.50 5.00 0.100 0.200 0.340 X X 15LT070S 0.7 1.5 15 100 1.0 3.50 5.00 0.100 0.200 0.340 X X 24LT100 1.0 2.5 24 100 1.5 5.00 7.00 0.070 0.130 0.260 X X 24LT100S 1.0 2.5 24 100 1.5 5.00 7.00 0.070 0.130 0.260 X X 24LT100SS 1.0 2.5 24 100 1.5 5.00 7.00 0.070 0.130 0.260 X X 24LT180 1.8 3.8 24 100 2.0 9.00 2.90 0.040 0.068 0.120 X X 24LT180S 1.8 3.8 24 100 2.0 9.00 2.90 0.040 0.068 0.120 X X 24LT180SS 1.8 3.8 24 100 2.0 9.00 2.90 0.040 0.068 0.120 X X 24LT190 1.9 4.2 24 100 1.9 10.00 3.00 0.030 0.057 0.100 X X 24LT190S 1.9 4.2 24 100 1.9 10.00 3.00 0.030 0.057 0.100 X X 24LT260 2.6 5.2 24 100 2.3 13.0 5.0 0.025 0.042 0.076 X X 24LT300 3.0 6.3 24 100 2.0 15.0 4.0 0.015 0.031 0.055 X X 24LT310 3.1 6.0 24 100 2.5 16.0 5.0 0.018 0.030 0.055 X X 24LT340 3.4 6.8 24 100 2.7 17.0 5.0 0.016 0.027 0.050 X X Items with S and SS at end of part number identify items with slit lead option. See Dimension Drawing and Part Ordering Number System sections of this document for more information. I hold = Hold current: maximum current device will pass without tripping in 20°C still air. R typ = Typical resistance of device in initial (un-soldered) state. I trip = Trip current: minimum current at which the device will trip in 20°C still air. R 1max = Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C for 20 sec. V max = Maximum voltage device can withstand without damage at rated current (I max) Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. 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 20°C still air. R min = Minimum resistance of device in initial (un-soldered) state. © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LT.html for current information. 117 LT Series Revised: June 4, 2010 LT Series Part Number I hold (A) POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > LT Series Temperature Rerating Ambient Operation Temperature -40°C -20°C 0°C 20°C 15LT070 1.20 1.09 0.85 0.70 15LT070S 1.20 1.09 0.85 0.70 Part Number 40°C 50°C 60°C 70°C 85°C 0.50 0.45 0.35 0.28 0.16 0.50 0.45 0.35 0.28 0.16 Hold Current (A) 24LT100 1.86 1.60 1.40 1.00 0.80 0.70 0.60 0.44 0.23 24LT100S 1.86 1.60 1.40 1.00 0.83 0.70 0.60 0.44 0.23 24LT100SS 1.86 1.60 1.40 1.00 0.83 0.70 0.60 0.44 0.23 24LT180 3.13 2.68 2.20 1.80 1.33 1.10 0.90 0.65 0.36 24LT180S 3.13 2.68 2.20 1.80 1.33 1.10 0.90 0.65 0.36 24LT180SS 3.13 2.68 2.20 1.80 1.33 1.10 0.90 0.65 0.36 24LT190 3.32 2.86 2.40 1.90 1.48 1.25 1.10 0.79 0.43 24LT260 4.30 3.72 3.10 2.60 1.98 1.69 1.40 1.11 0.60 24LT300 5.10 4.40 3.70 3.00 2.30 1.95 1.60 1.25 0.69 24LT310 5.36 4.58 3.70 3.10 2.36 2.01 1.70 1.30 0.71 24LT340 5.52 4.79 4.00 3.40 2.60 2.24 1.90 1.51 0.78 Temperature Rerating Curve 0.70 A 1.00 A 1.80 A 1.90 A 2.60 A 3.00 A 3.10 A 3.40 A Average Time Current Curves 190% 150% Percentage of Rated Current Time in Seconds 170% LT 10 1 130% 110% 90% 70% 50% 30% 10% -40 -30 -20 -10 0 10 20 30 40 Temperature (°C) 50 60 70 80 0.1 0.01 1 10 100 1000 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. 118 LT Series Revised: June 4, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LT.html for current information. POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > LT Series Physical Specifications Environmental Specifications Terminal Material 0.13mm nominal thickness, quarter-hard Nickel Operating/Storage Temperature -40°C to +85°C Insulating Material Polyester tape Maximum Device Surface Temperature in Tripped State 125°C Passive Aging +70°C, 1000 hours -/+10% typical resistance change Humidity Aging +85°C, 85%R.H.,7days, -/+5% typical resistance change Vibration MIL-LTD-883C, Condition A, No change Dimensions Figure 1 Figure 3 Figure 2 (Items with S at end of part number) SLIT (Items with SS at end of part number) 0.5 x 4.0 NOMINAL (.02”x .15”) A SLIT 0.5 x 4.0 NOMINAL (.02”x .15”) A A E B D1 D2 D1 D1 D2 C Fig. Inches D2 C C A Part Number E B E B B mm Inches C mm Inches D1 mm in. D2 mm in. E mm Inches mm 15LT070 1 0.78 0.87 19.9 22.1 0.19 0.20 4.9 5.2 0.03 0.05 0.7 1.2 0.22 5.5 0.22 5.5 0.01 0.22 3.9 4.1 15LT070S 2 0.78 0.87 19.9 22.1 0.19 0.20 4.9 5.2 0.03 0.05 0.7 1.2 0.22 5.5 0.22 5.5 0.01 0.22 3.9 4.1 24LT100 1 0.82 0.91 20.9 23.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1 0.16 4.1 0.16 4.1 0.01 0.16 3.9 4.1 24LT100S 2 0.82 0.91 20.9 23.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1 0.16 4.1 0.16 4.1 0.01 0.16 3.9 4.1 24LT100SS 3 0.82 0.91 20.9 23.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1 0.16 4.1 0.16 4.1 0.01 0.16 3.9 4.1 24LT180 1 0.94 1.02 24 26 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1 0.16 4.1 0.16 4.1 0.01 0.16 3.9 4.1 4.1 24LT180S 2 0.94 1.02 24 26 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1 0.16 4.1 0.16 4.1 0.01 0.16 3.9 24LT180SS 3 0.94 1.02 24 26 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1 0.16 4.1 0.16 4.1 0.01 0.16 3.9 4.1 24LT190 1 0.84 0.92 21.3 23.4 0.40 0.43 10.2 11 0.02 0.04 0.5 1 0.20 5 0.20 5 0.01 0.20 4.8 5.4 24LT190S 2 0.84 0.92 21.3 23.4 0.40 0.43 10.2 11 0.02 0.04 0.5 1 0.20 5 0.20 5 0.01 0.20 4.8 5.4 1 0.20 5 0.20 5 0.01 0.20 5.9 6.1 24LT260 1 0.94 1.02 24LT300 1 1.12 1.25 28.4 31.8 0.51 0.53 24 26 0.43 0.47 10.8 11.9 0.02 0.04 0.6 24LT310 1 0.94 1.02 24 26 0.58 0.63 14.8 15.9 0.02 0.04 0.6 1 0.20 5 0.20 5 0.01 0.20 5.9 6.1 24LT340 1 0.94 1.02 24 26 0.58 0.63 14.8 15.9 0.02 0.04 0.6 1 0.20 5 0.20 5 0.01 0.20 5.9 6.1 13 13.5 0.02 0.04 0.5 1.1 0.25 6.3 0.25 6.3 0.00 0.25 6 6.6 Part Marking System Top Side Product Series LR Current Rating 190S XX9R Littelfuse Trademark Lot Number (Contact Littelfuse for additional information) © 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LT.html for current information. 119 LT Series Revised: June 4, 2010 LT Series Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Min. Min. Min. Min Max. Min. Max. POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > LT Series Part Ordering Number System 24 LT 190 S U QUANTITY CODE U: 500 (bulk) LEAD OPTIONS: Blank = standard S = slit lead SS = both leads slit HOLD CURRENT (VALUE DIVIDED BY 100 = HOLD CURRENT IN AMPS) SERIES Voltage Rating (VDC) Packaging Part Number Ordering Number I hold (A) I hold Code Packaging Option Quantity Quantity & Packaging Codes 15LT070 15LT070U 0.7 070 Bulk 500 U 15LT070S 15LT070SU 0.7 070 Bulk 500 U 24LT100 24LT100U 1.0 100 Bulk 500 U 24LT100S 24LT100SU 1.0 100 Bulk 500 U 24LT100SS 24LT100SSU 1.0 100 Bulk 500 U 24LT180 24LT180U 1.8 180 Bulk 500 U 24LT180S 24LT180SU 1.8 180 Bulk 500 U 24LT180SS 24LT180SSU 1.8 180 Bulk 500 U 24LT190 24LT190U 1.9 190 Bulk 500 U 24LT190S 24LT190SU 1.9 190 Bulk 500 U 24LT260 24LT260U 2.6 260 Bulk 500 U 24LT300 24LT300U 3.0 300 Bulk 500 U 24LT310 24LT310U 3.1 310 Bulk 500 U 24LT340 24LT340U 3.4 340 Bulk 500 U 120 LT Series Revised: June 4, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LT.html for current information.