POLYFUSE® RESETTABLE FUSES LRD Strap Type, 15 V / 20 V Specifications Standard Packaging A small pack D standard Approvals Materials Insulating material: Polyester Tape Terminals: Nickel Features Max. Device Surface Temperature in Tripped State UL 1434 1st Edition CSA C22.2 No. 0 CSA TIL No. CA-3A cULus Recognition TÜV The LRD product series are designed to reduce the device’s resistance at the same hold current rating. The smaller thermal mass of these devices also provide benefit of faster trip time and increase the battery safety level. The LRD devices are ideally suited for battery packs used for portble computer and camcorder applications. Dimensions (mm) 125 °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-LRD-883C, Condition A, no change Marking “P”, Part Code, identification, lot number S: one slot 1 2 1 2 1 1 1 1 1 19.9 19.9 20.9 20.9 24.0 24.0 35.0 24.0 27.1 22.1 22.1 23.1 23.1 26.0 26.0 37.0 26.0 29.1 B Min Max 4.9 4.9 4.9 4.9 6.9 9.9 6.9 13.9 13.9 C Min Max 5.5 5.5 5.5 5.5 7.5 10.5 7.5 14.5 14.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 D Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.5 5.5 4.1 4.1 5.3 5.3 5.3 4.1 4.1 Permissible continuous operating current is ≤ 100 % at ambient temperature of 20 ºC (68 ºF). Model Ihold ITrip Vmax. dc Imax. max. time to trip (A) (A) (V) (A) (s @ A) LRD190 LRD190S LRD260 LRD260S LRD380 LRD450 LRD550 LRD600 LRD730 NOTE: I hold = I trip = Vmax = I max = 3.90 3.90 5.80 5.80 8.30 8.90 10.50 11.70 14.10 15 15 15 15 15 20 20 20 20 100 100 100 100 100 100 100 100 100 Hold current: maximum current device will pass without tripping in 20°C still air. Trip current: minimum current at which the device will trip in 20°C still air. Maximum voltage device can withstand without damage at rated current (I max) Maximum fault current device can withstand without damage at rated voltage (Vmax) Order Information 040706 1.90 1.90 2.60 2.60 3.80 4.50 5.50 6.00 7.30 Qty. OrderNumber Model 5.0 @ 9.50 5.0 @ 9.50 5.0 @ 13.00 5.0 @ 13.00 5.0 @ 19.00 5.0 @ 22.50 5.0 @ 27.50 5.0 @ 30.00 5.0 @ 30.00 E Min Max 3.9 3.9 3.9 3.9 4.9 5.9 4.9 5.9 5.9 4.1 4.1 4.1 4.1 5.1 6.1 5.1 6.1 6.1 Pd max. (W) 1.20 1.20 2.50 2.50 2.50 2.50 2.80 2.80 3.30 packaging quantity small pack standard 500 500 500 500 500 500 500 500 500 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 Resistance Approvals R min.( ) R max.( ) RI max.( ) 0.039 0.039 0.020 0.020 0.013 0.011 0.009 0.007 0.006 0.072 0.072 0.042 0.042 0.026 0.020 0.016 0.014 0.012 0.102 0.102 0.063 0.063 0.037 0.028 0.022 0.019 0.015 TÜV LRD190 LRD190S LRD260 LRD260S LRD380 LRD450 LRD550 LRD600 LRD730 A Min Max cURus Dimensions (mm) Model Fig • • • • • • • • • • • • • • • • • • Pd = Power dissipated from device when in the tripped state at 20°C still air. Minimum resistance of device in initial (un-soldered) state. R min= R 1max= Maximum resistance of device at 20°C measured one hour after tripping for 20 sec. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. Specifications are subject to change without notice Packaging 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. www.littelfuse.com POLYFUSE® RESETTABLE FUSES LRD AB 100.00 A: LRD380 B: LRD450 C: LRD730 C Time-to-Trip (s) 10.00 1.00 0.10 0.01 1.00 10.00 100.00 Fault Current (A) Thermal Derating Chart Model LRD190 LRD190S LRD260 LRD260S LRD380 LRD450 LRD550 LRD600 LRD730 040706 Ambient Operation Temperature - Ihold (A) -40 °C -20 °C 0 °C 23 °C 40 °C 50 °C 60 °C 70 °C 85 °C 2.80 2.80 3.80 3.80 5.50 6.50 8.00 8.70 10.60 2.50 2.50 3.40 3.40 4.90 5.80 7.10 7.80 9.50 2.30 2.30 3.10 3.10 4.40 5.30 6.20 7.10 8.60 1.90 1.90 2.60 2.60 3.80 4.50 5.50 6.00 7.30 1.60 1.60 2.20 2.20 3.30 3.90 4.70 5.20 6.30 1.50 1.50 2.00 2.00 3.00 3.60 4.30 4.70 5.70 1.40 1.40 1.90 1.90 2.80 3.30 4.00 4.40 5.40 1.20 1.20 1.70 1.70 2.50 2.90 3.60 3.90 4.70 1.00 1.00 1.40 1.40 2.10 2.50 3.00 3.30 4.00 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. www.littelfuse.com