P1800THLRP

POLYFUSE® Resettable PTCs Axial Leaded Strap 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 • Weldable nickel terminals Agency Approvals AGENCY AGENCY FILE NUMBER E183209 R50082521 • Low resistance • Provides overcurrent protection at 125°C trip temperature Applications • Rechargeable battery cell protection Electrical Characteristics I hold (A) 1.2 1.2 1.75 1.75 I trip (A) 2.7 2.7 3.8 3.8 V max (Vdc) 15 15 15 15 I max (A) 100 100 100 100 Pd max. (W) 1.2 1.2 2.5 2.5 Maximum Time To Trip Current (A) 6.00 6.00 8.75 8.75 Time (Sec.) 5.00 5.00 5.00 5.00 R min (Ω) 0.085 0.085 0.050 0.050 Resistance R typ (Ω) 0.160 0.160 0.090 0.090 R 1max (Ω) 0.220 0.220 0.120 0.120 X X X X X X X X Agency Approvals Part Number 15ST120 15ST120S 15ST175 15ST175S 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) 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. R typ = Typical resistance of device in initial (un-soldered) state. 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. ST Series Specifications are subject to change without notice.  Electronics Designers Guide www.littelfuse.com ©2006 Littelfuse POLYFUSE® Resettable PTCs Axial Leaded Strap Temperature Rerating Ambient Operation Temperature -40°C Part Number 15ST120 15ST120S 15ST175 15ST175S 1.90 1.90 2.50 2.50 1.70 1.70 2.30 2.30 1.50 1.50 2.00 2.00 1.20 1.20 1.75 1.75 -20°C 0°C 23°C 40°C Hold Current (A) 1.00 1.00 1.50 1.50 0.90 0.90 1.30 1.30 0.80 0.80 1.20 1.20 0.70 0.70 1.10 1.10 0.50 0.50 0.90 0.90 50°C 60°C 70°C 85°C Average Time Current Curves Temperature Rerating Curve 170% 150% Percentage of Rated Current 130% 110% 90% 70% 50% 30% 10% -40 -30 -20 -10 0 10 20 30 40 Temperature (°C) 50 60 70 80 A: 15ST120/15ST120S B: 15ST175/15ST175S C: D: E: 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. ST Series Specifications are subject to change without notice.  Electronics Designers Guide www.littelfuse.com ©2006 Littelfuse POLYFUSE® Resettable PTCs Axial Leaded Strap Physical Specifications Lead Material 0.13mm nominal thickness, quarter-hard nickel Environmental Specifications Operating/Storage Temperature Maximum Device Surface Temperature in Tripped State Passive Aging Humidity Aging Vibration -40°C to +85°C 125°C +70°C, 1000 hours ±5% typical resistance change +85°C, 85%R.H. 7days ±5% typical resistance change MIL-STD-883C, Condition A No change Insulating Material Polyester tape Dimensions Figure 1 SLIT A Figure 2 0.5 x 4.0 NOMINAL (.02”x .15”) A B Marking D1 D2 E B Marking D1 D2 E Figure 1 A Inches Figure 2 SLIT C C B Marking 15ST120 D1 Part Number A B mm Inches 0.5 x 4.0 NOMINAL (.02”x .15”) A C mm D1 D2 Inches Min 0.01 0.01 0.01 0.01 E mm Fig. mm Inches Inches mm Inches mm Min. 5.5 5.5 Min. 0.22 0.22 0.16 0.16 Min. 5.5 5.5 4.1 4.1 E B Min. Max. Min. Max. Min. Max. Min. Marking Max. Min. Max. Min. E Max. Min. Max. Min. Max. 0.22 0.22 0.16 0.16 3.9 3.9 3.9 3.8 4.1 4.1 4.1 4.2 1 2 1 2 0.78 0.87 D2 19.9 19.9 C 20.9 20.9 22.1 22.1 23.1 23.1 0.19 0.19 0.19 0.19 0.20 0.20 0.20 0.20 D1 4.9 4.9 4.9 4.9 Littelfuse Trademark 5.2 5.2 5.2 5.2 0.02 0.02 0.02 Top Side 0.04 0.04 D2 0.6 0.6 0.6 0.6 1 C 0.22 15ST120S 0.78 15ST175 0.82 0.87 0.91 0.91 1 0.22 Product Series 1 1 15ST175S 0.82 0.02 XX9U 0.04 120 ST 0.04 0.16 Rating 4.1 Current 0.16 4.1 Part Marking System Top Side Product Series Part Numbering System 15 ST 175 S U Current Rating Lot Number (Contact Littelfuse for additional information) 120 XX9U Littelfuse Trademark ST 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) Lot Number (Contact Littelfuse for additional information) Packaging I hold (A) All Ratings Packaging Option Bulk Quantity 500 Quantity & Packaging Codes U ST Series Specifications are subject to change without notice.  Electronics Designers Guide www.littelfuse.com ©2006 Littelfuse