0452.750MRL Littelfuse

Surface Mount Fuses 2 NANO > Slo-Blo Fuse > 452/454 Series PS RoHS E 452/454 Series Fuse Description 2 The NANO Slo-Blo fuse has enhanced inrush withstand 2 characteristics over the NANO Fast-Acting fuse. The unique time delay feature of this fuse design helps solve the problem of nuisance opening by accommodating inrush currents that normally cause a fast-acting fuse to open. Features Small size UL Recognized to UL/ CSA/NMX UL 248-1 and Wide range of current UL/CSA/NMX UL 248-14 rating available (0.375A to 12A) Conforms to DENANs Wide operating Appendix 3 Agency Approvals temperature range Agency Agency File Number Ampere Range RoHS compliant and Halogen Free E10480 0.375A - 12A 29862 0.375A - 12A PS NBK030205-E10480B 1A - 5A E Applications Notebook PC Storage system LCD/PDP TV Telecom system LCD monitor Wireless basestation Electrical Characteristics for Series LCD/PDP panel White goods % of Ampere Rating Opening Time LCD backlight inverter Game console Portable DVD player Office Automation 100% 4 hours, Minimum equipment Power supply 200% 1 sec., Min. 60 sec., Max. Battery charging circuit 300% 0.2 sec., Min. 3 sec., Max Networking protection 800% 0.002 sec., Min. 0.1 sec., Max. PC server Industrial equipment Cooling fan system Electrical Specifications by Item Agency Approvals Max Ampere Rating Interrupting Nominal Cold Nominal Melting Amp Code Voltage Rating 2 2 PS (A) Rating Resistance (Ohms) I t (A sec) E (V) 0.375 .375 125 1.2000 0.101 x x 0.500 .500 125 0.7000 0.240 x x 0.750 .750 125 0.3600 0.904 x x 001. 001. 125 0.2250 1.98 x x x 1.50 01.5 125 0.0930 3.65 x x x 50A 125 VAC/VDC 2.00 002. 125 300A 32 VDC 0.0625 8.20 x x x PSE: 100A 100 VAC 2.50 02.5 125 0.0450 15.0 x x x 3.00 003. 125 0.0340 20.16 x x x 3.50 03.5 125 0.0224 26.53 x x x 4.00 004. 125 0.0186 34.40 x x x 5.00 005. 125 0.0136 53.72 x x x 7.00 007. 75 0.0105 123.83 x x 50A 72 VAC 50A 60 VDC 8 008. 75 0.0088 137.34 x x 100A 75 VDC 12 012. 75 0.0061 260.46 x x Notes: 2 - l t calculated at 8ms. - Resistance is measured at 10% of rated current, 25C 2019 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended.Specifications are subject to change without notice. Revised: 11/21/1912.0A 8.00A 7.00A 5.00A 4.00A 3.50A 3.00A 2.50A 2.00A 1.50A 1.00A 750mA 500mA 375mA Surface Mount Fuses 2 NANO > Slo-Blo Fuse > 452/454 Series Temperature Re-rating Curve Average Time Current Curves 100 10 1 Note: 1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.1 0.01 0.1 1 10 100 1000 CURRENT IN AMPS Soldering Parameters Reflow Condition Pb Free assembly t P - Temperature Min (T ) 150C s(min) T P Critical Zone Ramp-up T to T L P Pre Heat - Temperature Max (T ) 200C s(max) - Time (Min to Max) (t ) 60 180 secs T L s t L T Average ramp up rate (Liquidus Temp (T ) to peak 5C/second max. S(max) L T to T - Ramp-up Rate 5C/second max. S(max) L Ramp-down Preheat - Temperature (T ) (Liquidus) 217C L T Reflow S(min) - Temperature (t ) 60 150 seconds t L S +0/5 Peak Temperature (T ) 260 C P 25 Time within 5C of actual peak Temperature (t ) 20 40 seconds p time to peak temperature Time Ramp-down Rate 5C/second max. (t 25C to peak) Time 25C to peak Temperature (T ) 8 minutes max. P Do not exceed 260C Wave Soldering Parameters 260C Peak Temperature, 3 seconds max. 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/21/19 TIME IN SECONDS Temperature