Surface Mount Fuses NANO2® > 250V > Slo-Blo® Fuse > 443 Series 443 Series Fuse RoHS 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 •Slo-Blo Fuse ® • Available 0.50A – 5.00A • RoHS Compliant Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 0.500A - 5.00A SU05024 -14004 SU05024 -14003 SU05024 -14002 0.500A - 0.750A 1.00A - 2.50A 3.00A - 5.00A R50310551 0.500A - 5.00A • Fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly Applications • AC/DC power adaptor • Lighting System • Telecom equipment system power • LED Lighting • Portable system built-in AC/DC converter Additional Information Electrical Characteristics for Series % of Ampere Rating Opening Time 100% 4 hours, Minimum 250% 120 seconds, Maximum Datasheet Samples Resources Electrical Specifications by Item Ampere Rating (A) Amp Code Max Voltage Rating (V) 0.50 .500 0.75 1 Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2sec) Nominal Voltage Drop (mV) 250 0.600 1.61 448 .750 250 0.275 3.025 001. 250 0.180 10.17 Interrupting Rating Agency Approvals x x x 285 x x x 234 x x x 1.50 01.5 250 0.100 14.72 196 x x x 2 002. 250 0.052 18.06 154 x x x 2.50 02.5 250 0.035 18.13 139 x x x 3 003. 250 0.028 51.44 113 x x x 50A @250VAC 3.50 03.5 250 0.019 53.14 98 x x x 4 004. 250 0.016 122.5 81 x x x 5 005. 250 0.0115 180.6 80 x x x Notes: 1. Cold resistance measured at less than 10% of rated current at 23°C. 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. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 09/09/15 Surface Mount Fuses NANO2® > 250V > Slo-Blo® Fuse > 443 Series Average Time Current Curves 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 Re-rating Curve 100 TIME IN SECONDS 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 1 10 100 1000 CURRENT IN AMPS Soldering Parameters Pre Heat Pb – Free assembly - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 120 secs Average ramp up rate (Liquidus Temp (TL) to peak 5°C/second max. TS(max) to TL - Ramp-up Rate 5°C/second max. Reflow - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 90 seconds Peak Temperature (TP) 260 Time within 5°C of actual peak Temperature (tp) 20 – 40 seconds +0/–5 °C Ramp-down Rate 5°C/second max. Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed 260°C Wave Soldering Parameters 260°C Peak Temperature, 3 seconds max. tP TP Critical Zone TL to TP Ramp-up TL TS(max) Temperature Reflow Condition tL Ramp-down TS(min) 25 Preheat tS time to peak temperature (t 25ºC to peak) Time © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/09/15 Surface Mount Fuses NANO2® > 250V > Slo-Blo® Fuse > 443 Series Product Characteristics Materials Body: Ceramic Cap: Silver Plated Brass Operating Temperature –55OC to 125OC with proper derating Product Marking Body: Brand Logo, Current Rating Rated Voltage, T - C Characteristic “T” Thermal Shock MIL-STD-202, Method 107, Test Condition B (5 cycles -65oC to +125oC) Vibration MIL-STD-202, Method 201 (10-55 Hz) Moisture Resistance MIL-STD-202, Method 106, High Humidity (90-98%RH), Heat (65oC) Salt Spray MIL-STD-202, Method 101, Test Condition B Mechanical Shock MIL-STD-202, Method 213, Test Condition I (100 G’s peak for 6 milliseconds) Insulation Resistance MIL-STD-202, Method 302, Test Condition A (10,000 ohms, (after Opening) Minimum) Solderability MIL-STD-202, Method 208 Resistance to Soldering Heat MIL-STD-202, Method 210, Test Condition B (10 sec at 260oC) Moisture Sensitivity Level Level 1 J-STD-020 Min. copper layer thickness = 100um Min. copper trace width = 10mm PCB Recommendation for Thermal Management Alternate methods of thermal management may be used. In such cases, under normal operations, the maximum temperature of the fuse body should not exceed 80OC in a 25OC ambient environment. Part Numbering System Dimensions 3.25 (.128") 10.10 (.397") 5A T AC250V 3.12 (.123") 6.10 (.240") 3.12 (.123") 0443 .500 D R 3.43 (.135") 12.6 (.496") 1.70 typ (.067") Recommended Pad Layout SERIES AMP Code Refer to Electrical characteristics table QUANTITY Code D = 1500 pcs PACKAGING Code R = Tape and Reel Example: 1.5 amp product is 0443 01.5 D R (0.5 amp product shown above). Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 24mm Tape and Reel EIA-RS 481-2 (IEC 286, part 3) 1500 DR © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/09/15