POLY-FUSE® Resettable PTCs Axial Lead Battery Strap Type > VT Series VT Series RoHS Description The new VT Series device provides reliable, noncycling protection against overcharging and short circuits events for rechargeable battery cells where resettable protection is desired. Features • Compact design saves board space • Low resistance • RoHS compliant and lead–free • Weldable Nickel terminals • Slim, low profile design Agency Approvals Applications AGENCY AGENCY FILE NUMBER •R echargeable battery cell protection - Mobile phones - Laptop computers E183209 R50119583 Electrical Characteristics Part Number I hold (A) I trip (A) V max (Vdc) I max (A) Pd max. (W) 16VT210S 2.10 4.70 16 100 1.5 Maximum Time To Trip Agency Approvals Resistance Current (A) Time (Sec.) R min (Ω) R typ (Ω) R 1max (Ω) 10.00 5.00 0.018 0.030 0.060 X X 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. Temperature Rerating Ambient Operation Temperature -40°C -20°C 0°C 25°C 4.10 3.50 2.90 2.10 Part Number 16VT210S 40°C 50°C 60°C 70°C 85°C 1.30 1.00 0.70 0.10 Hold Current (A) 1.60 WARNING • Users shall independently assess the suitability of these devices for each of their applications • Operation of these devices beyond the stated maximum ratings could result in damage to the devices and lead to electrical arcing and/or fire • These devices are intended to protect against the effects of temporary over-current or over-temperature conditions and are not intended to perform as protective devices where such conditions are expected to be repetitive or prolonged in duration • Exposure to silicon-based oils, solvents, electrolytes, acids, and similar materials can adversely affect the performance of these PPTC devices • These devices undergo thermal expansion under fault conditions, and thus shall be provided with adequate space and be protected against mechanical stresses • Circuits with inductance may generate a voltage (L di/dt) above the rated voltage of the PPTC device. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/01/15 POLY-FUSE® Resettable PTCs Axial Lead Battery Strap Type > VT Series Average Time Current Curves Temperature Rerating Curve 2.10 A 200% 150% Percentage of Rated Current 10 Time in Seconds 170% VT 1 130% 110% 90% 70% 50% 30% 10% -40 -30 -20 -10 0 10 20 30 40 Temperature (°C) 50 60 70 80 Note: Typical Temperature rerating curve, refer to table for derating data 0.1 Physical Specifications 0.01 0.01 0.1 1 Terminal Material 0.13mm nominal thickness, quarter-hard Nickel Insulating Material Polyester tape 10 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. Environmental Specifications Operating/Storage Temperature -40°C to +85°C Passive Aging +70°C, 1000 hours, -/+10% typical resistance change Humidity Aging +85°C, 85%R.H., 7 days, -/+5% typical resistance change Thermal Shock MIL–STD–202, Method 107, +85°C/-40°C 20 times -30% typical resistance change Vibration MIL–STD–883, Method 2007, Condition A, No change © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/01/15 POLY-FUSE® Resettable PTCs E B E E B D1 D2 Axial Lead Battery Strap Type > VTD2Series C C D2 D1 C gure 5 Figure 6 A A E E B Dimensions Figure 2 D2 Figure 1 A E B D2 Figure 4 C (Items with SS at end of part number) 0.5 x 4.0 NOMINAL SLIT (.02”x .15”) A E D1 D2 D2 A B E B D1 D1 Figure 3 D1 (Items withCS at end of part number) 0.5 x 4.0 NOMINAL SLIT (.02”x .15”) A E B D2 D2 D1 C C C C Figure 5A Inches mm Min. Max. B D1 B A Part Number 16VT210S Min. Max. Inches C mm Inches FigureD26 D1 mm Inches mm Inches A E mm Inches mm E Min. Max. Min. Max. Min. E Max. B Min. Max. Min. Max Min Max Min Max Min Max Min Max 0.82 0.91 20.90 23.10 0.19 0.21 4.90 5.30 0.02 0.03 0.60 0.80 0.16 0.23 4.1 5.8 0.16 0.23 4.1 5.8 0.15 0.16 3.90 4.10 D2 D1 C Max D2 C Part Marking System Part Ordering Number System Double Sided Marking Top Side 16 VT 210 S U Product Series QUANTITY CODE U: 500 (bulk) VT 210 Littelfuse Trademark Min Bottom Side LEAD OPTIONS: S = slit lead Current Rating Lot Number (Contact Littelfuse for additional information) VT 210 XXEF HOLD CURRENT (VALUE DIVIDED BY 100 = HOLD CURRENT IN AMPS) SERIES Voltage Rating (VDC) Double Sided Marking Packaging Top Side Part Number Ordering Number I hold (A) 16VT210S 16VT210SU 2.10 Product Series VT 210 Packaging I Code Quantity Littelfuse hold Current Rating Option Trademark Bottom Side 210 VT 210 XXEF © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/01/15 Bulk Quantity & Packaging Codes Lot Number (Contact Littelfuse for additional information) 500 U