Fuse Datasheet 451/453 Series Very Fast-Acting Fuse PS RoHS E Description The Nano2 SMF Fuse is a very small, Wire-in-Air (WIA) square shape surface mount fuse that was designed for secondary side circuit over-current protection applications. These fuses are designed for PCB using surface mount technology. Features & Benefits Very fast-acting UL Listed and Recognized to UL/CSA/NMX UL 248-1 and Small size UL/CSA/NMX UL 248-14 (see Wide range of current rating Agency Approvals) available Conforms to DENANs (0.062A to 20A) Appendix 3 Wide operating temperature Conforms to IEC/EN 60127-1 range and IEC/EN 60127-7 RoHS compliant and Halogen Additional Information Free Applications Notebook PC Storage system LCD/PDP TV Telecom system Resources Accessories Samples LCD monitor W ireless basest ation 451 Series 451 Series 451 Series LCD/PDP panel White goods LCD bac klight inverter Game console Portable DVD player Office Automation equipment Battery charging circuit Power supply protection Net working Industrial equipment PC server Resources Accessories Samples 453 Series 453 Series 453 Series Cooling fan system Agency Approvals Electrical Characteristics for Series Agency Agency File Number Ampere Range % of Ampere Rating Ampere Rating Opening Time 100% 0.062 20 4 hours, Minimum E10480 6.3A - 20A 0.062 10 5 sec., Maximum 200% 29862 0.062A - 15A 12 20 20 sec., Maximum 1A, 1.25A, 2A, 2.5A, J50446731 3.15A, 4A, 5A, 7A, 8A, 10A, 12A, 20A NBK030205-E10480A 1A-1.6A PS E NBK030205-E10480B 2A-5A NBK101105-E184655 6.3A - 10A E10480 0.062A - 5A 1A, 1.25A, 2A, 2.5A, NA 3.15A, 4A, 5A, 7A, 8A, 10A, 12A, 20A 2021 Littelfuse, Inc. 1 Specifications are subject to change without notice. Revised: GD. 08/23/21Fuse Datasheet 451/453 Series Very Fast-Acting Fuse Electrical Specifications by Item Max Agency Approvals Ampere Nominal Cold Nominal Voltage Interrupting Rating Amp Code Resistance Melting Rating Rating PS 2 2 (A) (Ohms) I t (A sec) E (V) .062 .062 125 5.5000 0.00019 - x - x - - .080 .080 125 4.0500 0.00033 - x - x - - .100 .100 125 3.1000 0.00138 - x - x - - .125 .125 125 1.7000 0.00286 - x - x - - .160 .160 125 1.2157 0.0048 - x - x - - .200 .200 125 0.8372 0.0089 - x - x - - .250 .250 125 0.5765 0.0158 - x - x - - .315 .315 125 0.3918 0.0311 - x - x - - 50A 125VAC/VDC .375 .375 125 0.4541 0.0442 - x - x - - 300A 32VDC PSE: 100A 100VAC .400 .400 125 0.4233 0.0551 - x - x - - .500 .500 125 0.3046 0.0824 - x - x - - .630 .630 125 0.2022 0.1381 - x - x - - .750 .750 125 0.1444 0.2143 - x - x - - .800 .800 125 0.1355 0.2654 - x - x - - 1.00 001. 125 0.0780 0.6029 - x x x x x 1.25 1.25 125 0.0780 0.664 - x x x x x 1.50 01.5 125 0.0630 0.853 - x x x - - 1.60 01.6 125 0.0580 1.060 - x x x - - 2.00 002. 125 0.0367 0.530 - x x x x x 2.50 02.5 125 0.0286 1.029 - x x x x x 50A 125VAC/VDC 3.00 003. 125 0.0227 1.650 - x x x - - 10,000A 75VDC 3.15 3.15 125 0.0215 1.920 - x x x x x 300A 32VDC 3.50 03.5 125 0.0200 2.469 - x x x - - PSE: 100A 100VAC 4.00 004. 125 0.0160 3.152 - x x x x x 5.00 005. 125 0.0125 5.566 - x x x x x 6.30 06.3 125 0.0096 9.170 x x x - - - 50A 125VAC/VDC 7.00 007. 125 400A 32VDC 0.0090 10.32 x x x - x x PSE: 100A 100VAC 8.00 008. 125 0.0077 20.23 x x x - x x 35A 125 VAC/ 50A 125 VDC 10.0 010. 125 0.0056 26.46 x x x - x x 400A 32 VDC PSE: 100A 100VAC 12.0 012. 65 0.0049 47.97 x x - - x x 150A 65VDC 15.0 015. 65 100A 65VAC 0.0037 97.82 x x - - - - 400A 32VDC 20.0 020. 65 0.00244 154 x - - - x x Notes: 2 - l t calculated at 8ms. - Resistance is measured at 10% of rated current, 25C 2021 Littelfuse, Inc. 2 Specifications are subject to change without notice. Revised: GD. 08/23/21