Axial Lead & Cartridge Fuses PICO(R) ll > Slo-Blo(R) Fuse > 473 Series 473 Series, PICO(R) II Slo-Blo(R) Fuse PS E RoHS Description The PICO(R) II Slo-Blo(R) Fuse combines time-delay performance characteristics with the proven reliability of a PICO(R) Fuse. Features * Enhanced inrush withstand * Halogen free and RoHS complaint * Small size * Wide operating temperature range * Wide range of current ratings (0.375A - 7A) * Low temperature rerating Agency Approvals Agency PS E Agency File Number Ampere Range E10480 0.375A - 7A 29862 0.375A - 7A NBK200416-JP1021 1A - 5A Applications * Flat-panel Display TV * Medical equipment * LCD monitor * Industrial equipment * Lighting system Electrical Characteristics % of Ampere Rating Additional Information Datasheet Resources Samples Opening Time 100% 4 Hours, Min. 200% 1 Sec., Min.; 60 Sec., Max. 300% 0.2 Sec., Min.; 3 Sec., Max. 800% 0.002 Sec., Min.; 0.1 Sec., Max. Electrical Characteristics Ampere Rating (A) Amp Code 0.375 0.500 0.750 1.00 1.50 2.00 2.25 2.50 3.00 3.50 4.00 5.00 7.00 .375 .500 .750 001. 01.5 002. 2.25 02.5 003. 03.5 004. 005. 007. Max Voltage Rating (V) 125 125 125 125 125 125 125 125 125 125 125 125 125 Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) Nom Voltage Drop (mV) 50A@125VAC/DC 1.7550 1.1370 0.4900 0.3000 0.1170 0.0720 0.0640 0.0520 0.0380 0.0240 0.0200 0.0133 0.0092 0.085 0.210 0.760 2.010 3.940 7.600 9.280 13.00 21.00 26.80 35.00 54.80 105.00 0.840 0.775 0.429 0.353 0.208 0.180 0.164 0.153 0.140 0.094 0.086 0.074 0.070 Agency Approvals PS E X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X (c) 2018 Littelfuse, Inc. Application testing is strongly recommended. Specifications are subject to change without notice. Revised: 02/15/18 Axial Lead & Cartridge Fuses PICO(R) ll > Slo-Blo(R) Fuse > 473 Series Average Time Current Curves .375A .50A .75A 1.0A 1.5A 2.0A 2.5A 3.0A 3.5A 4.0A 5.0A 7.0A Temperature Re-rating Curve 1000 TIME IN SECONDS 100 10 1 Note: Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.1 Soldering Parameters Recommended Process Parameters: Wave Parameter Lead-Free Recommendation Preheat: (Depends on Flux Activation Temperature) (Typical Industry Recommendation) Temperature Minimum: 100C Temperature Maximum: Preheat Time: 150C 60-180 seconds Solder Pot Temperature: 260C Maximum Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: Solder Iron Temperature: 350C +/- 5C Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. (c) 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18 0.01 0.1 1 10 100 CURRENT IN AMPERES 1000 Axial Lead & Cartridge Fuses PICO(R) ll > Slo-Blo(R) Fuse > 473 Series Product Characteristics Materials Encapsulated, Epoxy-Coated Body; Solder Coated Copper wire leads; RoHS compliant Product: Pure Tin-coated Copper wire leads Vibration MIL-STD-202, Method 201 (10-55 Hz); MIL-STD-202, Method 204, Test Condition C (55-2000 Hz at 10 G's Peak) Solderability MIL-STD-202, Method 208 Salt Spray Lead Pull Force MIL-STD-202, Method 211, Test Condition A (will withstand 7 lbs. axial pull test) MIL-STD-202, Method 101, Test Condition B Operating Temperature Insulation Resistance (After Opening): MIL-STD-202, Method 302, (10,000 ohms minimum at 100 volts) -60C to +125C (Consider re-rating) MIL-STD-202, Method 210, Test Condition C (20 sec at 260C) Shock MIL-STD-202, Method 213, Test Condition I (100 G's peak for 6 milliseconds) Resistance to Soldering Heat Thermal Shock MIL-STD-202, Method 107, Test Condition B (-65C to 125C) Moisture Resistance MIL-STD-202, Method 106 (90-98% RH), Heat (65C) Dimensions Part Numbering System 0473 xxxx Y R T1 L 62.7 (2.468") 27.78 (1.094") 0.64 (.025") 6.35 (.25") tape 52.4 (2.062")* 7.11 (.280") F 1A L 27.78 (1.094") Series 3.43 (.135") MAX Current Rating 6.35 (.25") tape 5.0 (.197") Refer to Amp Code column of Electrical Characteristics Table Quantity F 1A L Y = 4000 P = 2000 M = 1000 473 series markings Type of Packaging R = Reel A = Ammo Pack X = Loose Pack Lead Length T1: 52.4mm (2.062")* RoHS + HF Packaging Packaging Option Packaging Specification *T1: 52.4mm (2.062") Tape and Reel EIA 296 Quantity & Packaging Code Please refer to available quantities above in "Part Numbering System" Notes: * T1 dimension is defined as the length of the component between the two tapes. The full component length is 62.7mm (2.468"). Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. (c) 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18