15ST120SU

POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > ST Series ST Series Description The new ST 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 • Low resistance • Weldable Nickel terminals Agency Approvals Applications AGENCY • Rechargeable battery cell protection AGENCY FILE NUMBER E183209 • Provides overcurrent protection at 125°C trip temperature R50119583 Electrical Characteristics I trip (A) V max (Vdc) I max (A) Pd max. (W) 15ST120 1.2 2.7 15 100 Maximum Time To Trip Agency Approvals Resistance Current (A) Time (Sec.) R min (Ω) R typ (Ω) R 1max (Ω) 1.2 6.00 5.00 0.085 0.160 0.220 X X 15ST120S 1.2 2.7 15 100 1.2 6.00 5.00 0.085 0.160 0.220 X X 15ST175 1.75 3.8 15 100 2.5 8.75 5.00 0.050 0.090 0.120 X X 15ST175S 1.75 3.8 15 100 2.5 8.75 5.00 0.050 0.090 0.120 X X 30ST200 2.00 4.4 30 100 1.9 10.00 4.00 0.030 0.060 0.100 X X 30ST350 3.50 6.3 30 100 2.5 20.00 3.00 0.017 0.031 0.050 X X 30ST420 4.20 7.6 30 100 2.9 20.00 6.00 0.012 0.024 0.040 X X Items with S 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/ST.html for current information. 121 ST Series Revised: June 4, 2010 ST Series Part Number I hold (A) POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > ST 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 0.50 Hold Current (A) 15ST120 1.90 1.70 1.50 1.20 1.00 0.90 0.80 0.70 15ST120S 1.90 1.70 1.50 1.20 1.00 0.90 0.80 0.70 0.50 15ST175 2.50 2.30 2.00 1.75 1.50 1.30 1.20 1.10 0.90 15ST175S 2.50 2.30 2.00 1.75 1.50 1.30 1.20 1.10 0.90 30ST200 3.20 2.80 2.50 2.00 1.70 1.60 1.40 1.20 0.90 30ST350 5.40 4.80 4.30 3.50 3.00 2.80 2.50 2.20 1.70 30ST420 6.40 5.70 5.10 4.20 3.60 3.30 3.00 2.60 2.10 Temperature Rerating Curve 170% 4.20 A 150% ST Time in Seconds 10 Percentage of Rated Current 1.75 A 2.00 A 3.50 A 1.20 A Average Time Current Curves 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. 122 ST Series Revised: June 4, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ST.html for current information. POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > ST Series Physical Specifications Environmental Specifications Lead Material 0.13mm nominal thickness, quarter-hard Nickel Insulating Material Polyester tape Operating/Storage Temperature Maximum Device Surface Temperature in Tripped State -40°C to +85°C 125°C Passive Aging +70°C, 1000 hours -/+5% typical resistance change Humidity Aging +85°C, 85% R.H., 7 days, -/+5% typical resistance change Vibration MIL–STD–883C, Condition A, No change Dimensions Figure 1 Figure 2 (Items with S at end of part number) 0.5 x 4.0 NOMINAL SLIT (.02”x .15”) A A E B D1 E B D2 D1 D2 C A Part Number Fig. C B Inches mm Inches C mm Inches D1 mm D2 E Inches mm Inches mm Inches mm Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Min. Min. Min. Min Max. Min. Max. 1 0.78 0.87 19.9 22.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1.0 0.22 5.5 0.22 5.5 0.01 0.22 3.9 4.1 15ST120S 2 0.78 0.87 19.9 22.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1.0 0.22 5.5 0.22 5.5 0.01 0.22 3.9 4.1 15ST175 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 0.16 4.1 0.16 4.1 0.01 0.16 3.9 4.1 15ST175S 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 0.16 4.1 0.16 4.1 0.01 0.16 3.8 4.2 30ST200 30ST350 30ST420 1 0.84 0.92 21.3 23.4 0.40 0.43 10.2 11.0 0.02 0.04 0.5 1.1 0.20 5.0 0.20 5.0 0.19 0.21 4.8 5.4 1 1.12 1.25 28.4 31.8 0.51 0.53 13.0 13.5 0.02 0.04 0.5 1.1 0.25 6.3 0.25 6.3 0.24 0.26 6.0 6.6 1 1.20 1.28 30.6 32.4 0.51 0.54 12.9 13.6 0.02 0.04 0.5 1.1 0.20 5.0 0.20 5.0 0.24 0.26 6.0 6.7 ST Series 15ST120 Part Marking System Top Side Product Series ST Current Rating 120 XX9U 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/ST.html for current information. 123 ST Series Revised: June 4, 2010 POLYFUSE® Resettable PTCs Axial Lead Battery Strap Type > ST Series Part Ordering Number System 15 ST 175 S U QUANTITY CODE: U = 500 (bulk) LEAD OPTIONS: Blank = standard S = slit lead 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 U 15ST120 15ST120U 1.2 120 Bulk 500 15ST120S 15ST120SU 1.2 120 Bulk 500 U 15ST175 15ST175U 1.75 175 Bulk 500 U 15ST175S 15ST175SU 1.75 175 Bulk 500 U 30ST200 STD200U 2.00 200 Bulk 500 U 30ST350 STD350U 3.50 350 Bulk 500 U 30ST420 STD420U 4.20 420 Bulk 500 U 124 ST Series Revised: June 4, 2010 © 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ST.html for current information.