LTD070 LITTELFUSE | Alldatasheet
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Features
This product line similar to the STD family is designed to provide overcurrent protection for rechargable batteries at elevated temperatures. These devices offer hold currents from 0.7 A to 4.3 A and voltages from 15 V to 24 V. LTD Specifi cations Packaging A small pack D standard Materials Insulating material: Polyester Tape Terminals: Nickel Max. Device Surface Temperature in Tripped State 120 °C Operating / Storage Temperature -40 ºC to +85 ºC (consider derating) Humidity Ageing +85 °C, 85 % R.H., 7 days, ± 5 % typical resistance change Vibration MIL-LTD-883C, Condition A, no change Marking “P”, Part Code, identifi cation, lot number cURus TÜV Permissible continuous operating current is ≤ 100 % at ambient temperature of 20 ºC (68 ºF). NOTE: 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. Vmax = 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) Pd = 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 1max= Maximum resistance of device at 20 °C measured one hour after tripping for 20 s. Caution: Operation beyond the speci fi ed rating may result in damage and possible arcing and fl ame. Specifi cations are subject to change without notice Dimensions (mm) Model I hold I Trip V max. dc I max. max. time to trip P d max. Resistance Approvals (mA/A) (A) (V) (A) (s @ A) (W) R min.() R max.() RI max.() Order Qty. Order- Model Packaging Information Number Model A B C D E packaging quantity Fig Min Max Min Max Min Max Min Min Max small pack standard Dimensions (mm) S: one slot SS: two slots
In our continuing strategy to deliver unparalleled circuit protection solutions, technical expertise and application leadership, we proudly introduce the WICKMANN Group and its products to the Littelfuse portfolio. 040706 www.littelfuse.com POLYFUSE® RESETTABLE FUSES LTD Thermal Derating Chart Model Ambient Operation Temperature - I hold (A) -40 °C -20 °C 0 °C 23 °C 40 °C 50 °C 60 °C 70 °C 85 °C A: LTD190 B: LTD180 C: LTD100S 1.00 10.00 100.00 0.01 0.10 1.00 10.00 100.00 AB C Fault Current (A) Time to Trip (s)