04071.25WR Littelfuse

Surface Mount Fuses Ceramic Fuse > 407 Series RoHS Pb 407 Series 1206 Time-Lag Fuse Description Littelfuse 407 Series is a 100% Lead-free, RoHS compliant and Halogen-free fuse designed specifically to provide overcurrent protection to circuits that operate under high working ambient temperatures up to 150 C and high in-rush currents. The general design ensures excellent temperature stability and performance reliability. This high 2 I t time lag fuse is designed to have ultra-high in-rush current withstand capability to avoid nuisance fuse open. Features Operating Temperature Suitable for both leaded Agency Approvals from -55 C to +150 C and lead-free reflow/wave soldering 100% Lead-free, RoHS AGENCY AGENCY FILE NUMBER AMPERE RANGE 2 compliant and Ultra high I t values Halogen-free E10480 1A 8A Benefits Electrical Characteristics Avoids nuisance opening High current ratings in % of Ampere Ampere Opening Time at 25C due to high inrush and small size Rating Rating surge current inherent in 100% 1A 8A 4 hours Minimum the system 200% 1A 8A 1 sec Min 120 secs Max 300% 1A 8A 0.1 sec Min 3 secs Max 800% 1A 8A 0.002 sec Min 0.05 secs Max Applications Displays Scanners Additional Information Servers Data Modems Computers Gaming Consoles Printers Datasheet Resources Samples 2020 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended.Specifications are subject to change without notice. Revised: 06/24/20 PRELIMINARYSurface Mount Fuses Ceramic Fuse > 407 Series Electrical Specifications by Item Agency Max. Nominal Nominal Power Ampere Interrupting Nominal Nominal Approval Amp Voltage Voltage Dissipation At 2 Rating Rating Resistance Melting I t Code Rating Drop At Rated Rated Current 1 2 2 3 (A) (AC/DC) (Ohms) (A Sec.) 4 (V) Current (V) (W) 1.00 001. 63 0.360 0.142 0.456 0.456 x 1.25 1.25 63 0.200 0.329 0.404 0.500 x 50A 63VDC 1.50 01.5 63 0.180 0.567 0.347 0.525 x 2.00 002. 63 0.100 0.870 0.323 0.640 x 2.50 02.5 32 0.055 1.000 0.252 0.625 x 3.00 003. 32 0.040 1.300 0.187 0.570 x 3.50 03.5 32 0.030 2.260 0.153 0.525 x 50A 32VDC 4.00 004. 32 0.025 4.180 0.142 0.560 x 4.50 04.5 32 0.020 5.200 0.134 0.585 x 5.00 005. 32 0.016 7.800 0.133 0.650 x 5.50 05.5 24 50A 24VDC 0.014 8.550 0.130 0.715 x 6.00 006. 24 0.012 15.560 0.128 0.780 x 7.00 007. 24 60A 24VDC 0.010 16.230 0.110 0.770 x 8.00 008. 24 0.009 24.120 0.097 0.800 x Note: 1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting Devices designed to carry rated current for 4 hours minimum. It is recommended that Rating tested at rated voltage with time constant < 0.8 msec. devices be operated continuously at no more than 80% rated current. See Temperature Derating Curve for additional derating information. 2. Nominal Resistance measured with < 10% rated current. Devices designed to be mounted with marking code facing up. 2 3. Nominal Melting I t measured at 1 msec opening time. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. Temperature Re-rating Curve Average Time Current Curves 100.000 140 120 10.000 100 80 1.000 60 40 -65 -45 -25 -5 15 35 55 75 95 115 135 155 0.100 TEMPERATURE (C) Note: 0.010 Re-rating depicted in this curve is in addition to the standard re-rating of 20% for continuous operation. Example: For continuous operation at 75 C, the fuse should be rerated as follows: 0.001 I = (0.80)(0.85)I = (0.68)I RAT RAT 1 10 100 1000 CURRENT (AMPERE) 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/24/20 PRELIMINARY PERCENT OF RATING TIME IN SECONDS 1A 1.25A 1.5A 2A 2.5A 3A 3.5A 4A 4.5A 5A 5.5A 6A 7A 8A