0443003.DR Littelfuse

Fuse Datasheet 443 Series Slo-Blo Fuse PS RoHS E Description The 250V Nano2 Fuse is a small square surface mount fuse that is designed to enable compliance with the RoHS directive. This product is fully compatible with lead-free solder alloy and higher temperature profiles associated with lead-free assembly. Features 250 VAC voltage rating Recognized to UL/CSA/NMX 248-1 and UL/CSA/NMX Slo-Blo Fuse 248-14 Available 0.50A 5.00A Conforms to K60127-1 and Halogen-free and RoHS K60127-7 Compliant Conforms to DENANs Fully compatible with Appendix 3 lead-free solder alloys and Conforms to IEC/EN 60127-1 higher temperature profiles and IEC/EN 60127-7 associated with lead-free Additional Information assembly Applications AC/DC power adaptor Lighting System Telecom equipment system LED Lighting power Resources Accessories Samples P ortable system built-in AC/ DC converter Electrical Characteristics for Series Agency Approvals Agency Agency File Number Ampere Range % of Ampere Rating Opening Time E10480 0.500A - 5.00A 100% 4 hours, Minimum SU05024 -14004 0.500A - 0.750A 250% 120 seconds, Maximum SU05024 -14003 1.00A - 2.50A SU05024 -14002 3.00A - 5.00A PS E NBK290416-JP1021 1.00A 5.00A R50310551 0.500A - 5.00A Electrical Specifications by Item Ampere Max Nominal Cold Nominal Nominal Agency Approvals Interrupting Rating Amp Code Voltage Rating Resistance Melting Voltage Drop 4 Rating PS 2 2 E (A) (V) (Ohms) I t (A sec) (mV) 0.50 .500 250 0.600 1.61 448 x x - x 0.75 .750 250 0.275 3.025 285 x x - x 1 001. 250 0.180 10.17 234 x x x x 1.50 01.5 250 0.100 14.72 196 x x x x 50A 2 002. 250 250VAC 0.052 18.06 154 x x x x 100A 2.50 02.5 250 0.035 18.13 139 x x x x 125VDC 3 003. 250 0.028 51.44 113 x x x x 3.50 03.5 250 0.019 53.14 98 x x x x 4 004. 250 0.016 122.5 81 x x x x 5 005. 250 0.0115 180.6 80 x x x x Notes: 1. Cold resistance measured at less than 10% of rated current at 23C. 2. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved 3. Have special electrical characteristic needs Contact Littelfuse to learn more about application specific options. 4. Interrupting Rating may differ based on Agency Approval. See Agency Approval certificate for more details. 2021 Littelfuse, Inc. 1 Specifications are subject to change without notice. Revised: GD.03/09/21Fuse Datasheet 443 Series Slo-Blo Fuse Temperature Re-rating Curve Average Time Current Curves 100 10 1 0.1 Note: 1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.01 0.001 0.1 110100 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 200C L P Pre Heat - Temperature Max (T ) s(max) 60 180 secs - Time (Min to Max) (t ) T s L t L 5C/second max. Average ramp up rate (Liquidus Temp (T ) to peak T S(max) L 5C/second max. T to T - Ramp-up Rate S(max) L Ramp-down Preheat 217C - Temperature (T ) (Liquidus) L Reflow T S(min) 60 150 seconds - Temperature (t ) L t S +0/5 260 C Peak Temperature (T ) P 20 40 seconds 25 Time within 5C of actual peak Temperature (t ) p time to peak temperature Time 5C/second max. Ramp-down Rate (t 25C to peak) 8 minutes max. Time 25C to peak Temperature (T ) P 260C Do not exceed 260C Peak Temperature, 3 seconds Wave Soldering Parameters max. 2021 Littelfuse, Inc. 2 Specifications are subject to change without notice. Revised: GD.03/09/21 Time in Seconds 0.50 A 0.75 A 1.00 A 1.50 A 2.00 A 2.50 A 3.00 A 3.50 A 4.00 A 5.00 A Temperature