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 LRD190 1.90 3.90 15 100 5.0 @ 9.50 1.20 0.039 0.072 0.102 ? ? LRD190s 1.90 3.90 15 100 5.0 @ 9.50 1.20 0.039 0.072 0.102 ? ? LRD260 2.60 5.80 15 100 5.0 @ 13.00 2.50 0.020 0.042 0.063 ? ? LRD260s 2.60 5.80 15 100 5.0 @ 13.00 2.50 0.020 0.042 0.063 ? ? LRD380 3.80 8.30 15 100 5.0 @ 19.00 2.50 0.013 0.026 0.037 ? ? LRD450 4.50 8.90 20 100 5.0 @ 22.50 2.50 0.011 0.020 0.028 ? ? LRD550 5.50 10.50 20 100 5.0 @ 27.50 2.80 0.009 0.016 0.022 ? ? LRD600 6.00 11.70 20 100 5.0 @ 30.00 2.80 0.007 0.014 0.019 ? ? LRD730 7.30 14.10 20 100 5.0 @ 30.00 3.30 0.006 0.012 0.015 ? ? curus tv note: i hold = hold current: maximum current device will pass without tripping in 20c still air. i trip = trip current: minimum current at which the device will trip in 20c 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 (v max ) p d = power dissipated from device when in the tripped state at 20c still air. r min = minimum resistance of device in initial (un-soldered) state. r 1max = maximum resistance of device at 20c measured one hour after tripping for 20 sec. caution: operation beyond the speci ed rating may result in damage and possible arcing and ame. speci cations are subject to change without notice model i hold i trip v max. dc i max. max. time to trip p d max. resistance approvals (a) (a) (v) (a) (s @ a) (w) r min. () r max. () r i max. () order qty. order- model packaging information number s: one slot p olyfuse ? r esettable f uses dimensions (mm) permissible continuous operating current is 100 % at ambient temperature of 20 oc (68 of). speci cations packaging a small pack d standard materials insulating material: polyester tape terminals: nickel max. device surface temperature in tripped state 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, identi cation, lot number strap type, 15 v / 20 v standard ul 1434 1 st edition csa c22.2 no. 0 csa til no. ca-3a approvals culus recognition tv features the LRD product series are designed to reduce the device?s resistance at the same hold cur- rent rating. the smaller thermal mass of these devices also provide bene t 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. LRD model a b c d e packaging quantity fig min max min max min max min min max small pack standard LRD190 1 19.9 22.1 4.9 5.5 0.6 1.0 5.5 3.9 4.1 500 10,000 LRD190s 2 19.9 22.1 4.9 5.5 0.6 1.0 5.5 3.9 4.1 500 10,000 LRD260 1 20.9 23.1 4.9 5.5 0.6 1.0 4.1 3.9 4.1 500 10,000 LRD260s 2 20.9 23.1 4.9 5.5 0.6 1.0 4.1 3.9 4.1 500 10,000 LRD380 1 24.0 26.0 6.9 7.5 0.6 1.0 5.3 4.9 5.1 500 10,000 LRD450 1 24.0 26.0 9.9 10.5 0.6 1.0 5.3 5.9 6.1 500 10,000 LRD550 1 35.0 37.0 6.9 7.5 0.6 1.0 5.3 4.9 5.1 500 10,000 LRD600 1 24.0 26.0 13.9 14.5 0.6 1.0 4.1 5.9 6.1 500 10,000 LRD730 1 27.1 29.1 13.9 14.5 0.6 1.0 4.1 5.9 6.1 500 10,000 dimensions (mm)
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 a: LRD380 b: LRD450 c: LRD730 1.00 10.00 100.00 0.01 0.10 1.00 10.00 100.00 fault current (a) time-to-trip (s) ab c p olyfuse ? r esettable f uses LRD 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 LRD190 2.80 2.50 2.30 1.90 1.60 1.50 1.40 1.20 1.00 LRD190s 2.80 2.50 2.30 1.90 1.60 1.50 1.40 1.20 1.00 LRD260 3.80 3.40 3.10 2.60 2.20 2.00 1.90 1.70 1.40 LRD260s 3.80 3.40 3.10 2.60 2.20 2.00 1.90 1.70 1.40 LRD380 5.50 4.90 4.40 3.80 3.30 3.00 2.80 2.50 2.10 LRD450 6.50 5.80 5.30 4.50 3.90 3.60 3.30 2.90 2.50 LRD550 8.00 7.10 6.20 5.50 4.70 4.30 4.00 3.60 3.00 LRD600 8.70 7.80 7.10 6.00 5.20 4.70 4.40 3.90 3.30 LRD730 10.60 9.50 8.60 7.30 6.30 5.70 5.40 4.70 4.00
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