Axial Lead & Cartridge Fuses PICO® ll > Slo-Blo® Fuse > 473 Series 473 Series, PICO® II Slo-Blo® Fuse RoHS PES Description The PICO® II Slo-Blo® Fuse combines time-delay performance characteristics with the proven reliability of a PICO® Fuse. Features • Enhanced inrush • Halogen free and RoHS withstand complaint • Small size • Wide operating temperature range • Wide range of current ratings (0.375A - 7A) • Low temperature Agency Approvals rerating Agency Agency File Number Ampere Range Applications E10480 0.375A - 7A • Flat–panel Display TV • Medical equipment • LCD monitor • Industrial equipment 29862 0.375A - 7A • Lighting system PS NBK200416-JP1021 1A - 5A E Electrical Characteristics % of Ampere Additional Information Opening Time Rating 100% 4 Hours, Min. 200% 1 Sec., Min.; 60 Sec., Max. 300% 0.2 Sec., Min.; 3 Sec., Max. Datasheet Resources Samples 800% 0.002 Sec., Min.; 0.1 Sec., Max. Electrical Characteristics Max Agency Approvals Ampere Nominal Cold Nominal Nom Amp Voltage Interrupting Rating Resistance Melting Voltage Drop Code Rating Rating PS (A) (Ohms) I2t (A2 sec) (mV) E (V) 0.375 .375 125 1.7550 0.085 0.840 X X 0.500 .500 125 1.1370 0.210 0.775 X X 0.750 .750 125 0.4900 0.760 0.429 X X 1.00 001. 125 0.3000 2.010 0.353 X X X 1.50 01.5 125 0.1170 3.940 0.208 X X X 2.00 002. 125 0.0720 7.600 0.180 X X X 2.25 2.25 125 50A@125VAC/DC 0.0640 9.280 0.164 X X X 2.50 02.5 125 0.0520 13.00 0.153 X X X 3.00 003. 125 0.0380 21.00 0.140 X X X 3.50 03.5 125 0.0240 26.80 0.094 X X X 4.00 004. 125 0.0200 35.00 0.086 X X X 5.00 005. 125 0.0133 54.80 0.074 X X X 7.00 007. 125 0.0092 105.00 0.070 X X © 2018 Littelfuse, Inc. Application testing is strongly recommended.Specifications are subject to change without notice. Revised: 02/15/18

Axial Lead & Cartridge Fuses PICO® ll > Slo-Blo® Fuse > 473 Series Temperature Re-rating Curve Average Time Current Curves .375A.50A.75A1.0A1.5A2.0A2.5A3.0A3.5A4.0A5.0A7.0A 1000 100 S D N O C10 E S N E I M TI 1 Note: Rerating depicted in this curve is in addition to the standard derating of 25% for 0.1 continuous operation. Soldering Parameters 0.01 Recommended Process Parameters: 0.1 1 10 100 1000 CURRENT IN AMPERES Wave Parameter Lead-Free Recommendation Preheat: (Depends on Flux Activation Temperature) (Typical Industry Recommendation) Temperature Minimum: 100°C Temperature Maximum: 150°C Preheat Time: 60-180 seconds Solder Pot Temperature: 260°C Maximum Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: Solder Iron Temperature: 350°C +/- 5°C Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18

Axial Lead & Cartridge Fuses PICO® ll > Slo-Blo® Fuse > 473 Series Product Characteristics Encapsulated, Epoxy-Coated Body; MIL-STD-202, Method 201 (10–55 Solder Coated Copper wire leads; Hz); MIL-STD-202, Method 204, Test Materials Vibration RoHS compliant Product: Pure Tin-coated Condition C (55–2000 Hz at 10 G’s Copper wire leads Peak) Solderability MIL-STD-202, Method 208 MIL-STD-202, Method 101, Test Salt Spray Condition B MIL-STD-202, Method 211, Test Condition Lead Pull Force A (will withstand 7 lbs. axial pull test) Insulation Resistance MIL-STD-202, Method 302, (10,000 (After Opening): ohms minimum at 100 volts) Operating Temperature –60ºC to +125ºC (Consider re-rating) Resistance to Soldering MIL-STD-202, Method 210, Test Heat Condition C (20 sec at 260ºC) MIL-STD-202, Method 213, Test Condition Shock I (100 G’s peak for 6 milliseconds) Thermal Shock MIL-STD-202, Method 107, Test Condition B (–65ºC to 125ºC) MIL-STD-202, Method 106 (90–98% Moisture Resistance RH), Heat (65ºC) Dimensions Part Numbering System 0473 xxxx Y R T1 L 62.7 (2.468") 52.4 (2.062")* 27.78 27.78 (1.094") 7.11 (.280") (1.094") Series 3.43 (.135") 0.64 (.025") MAX Current Rating 1 A LF Refer to Amp Code column of Electrical Characteristics Table 6.35 (.25") 5.0 (.197") 6.35 (.25") tape tape Quantity 1 A LF 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 Quantity & Packaging Option Packaging Specification Packaging Code Please refer to available quantities above *T1: 52.4mm (2.062") Tape and Reel EIA 296 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. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18