Axial Lead & Cartridge Fuses PICO® ll Fuse > Very Fast-Acting Fuse > 263 Series 263 Series, PICO® II 250 Volt Fuse, Very Fast Acting RoHS PS E Description The PICO® II 263 Series Fuse is a specially designed axial leaded fuse that achieves a 250V rating in a small package. Features • 250V rating • RoHS compliant and Halogen-free • Very fast–acting • Wide operating • Small size temperature range • Wide range of current • Low temperature rating available (62mA to rerating 5A) Agency Approvals Applications Agency Agency File Number Ampere Range • Lighting system • Office automation E10480 0.062 - 5A • Power supply machines • Audio/Video system • LCD/PDP TV PS PSE_NBK200416-JP1021 1A - 5A E • Medical equipment • LCD monitor 29862 0.125 - 5A Electrical Characteristics % of Ampere Additional Information Opening Time Rating 100% 4 Hours, Min. 200% 1 Second, Max. 300% 0.1 Second, Max. Datasheet Resources Samples Electrical Characteristics Max Agency Approvals Ampere Nominal Cold Nominal Nom Voltage Interrupting Rating Amp Code Resistance Melting Voltage Drop Rating Rating PS (A) (Ohms) I2t (A2 sec) (mV) E (V) 0.062 .062 250 5.50 0.000192 0.74 x 0.125 .125 250 1.745 0.00251 0.3 x x 0.250 .250 250 0.715 0.0165 0.235 x x 0.375 .375 250 0.391 0.0444 0.195 x x 0.500 .500 250 0.252 0.084 0.302 x x 0.750 .750 250 0.150 0.0411 0.176 x x 50A@250VAC 1.00 001. 250* 0.105 0.087 0.165 x x x PSE: 100A@ 1.50 01.5 250* 0.0635 0.2958 0.148 x x x 125VAC 2.00 002. 250* 0.0444 0.74 0.137 x x x 2.50 02.5 250* 0.0340 1.197 0.128 x x x 3.00 003. 250* 0.0274 1.77 0.1225 x x x 3.50 03.5 250* 0.0224 2.33 0.1175 x x x 4.00 004. 250* 0.0193 3.08 0.1125 x x x 5.00 005. 250* 0.0145 5.55 0.1065 x x x * PSE Approval has max. voltage range of 125VAC. © 2016 Littelfuse, Inc. Application testing is strongly recommended.Specifications are subject to change without notice. Revised: 10/10/16

Axial Lead & Cartridge Fuses PICO® ll Fuse > Very Fast-Acting Fuse > 263 Series Temperature Re-rating Curve Average Time Current Curves 1/16A 1/8A 1/4A 3/8A1/2A3/4A1A1 1/2A2A2 1/2A3A3 1/2A4A5A 100 10 S D N1 O C E S N E I M TI 0.1 Note: Rerating depicted in this curve is in addition to the standard derating of 25% for 0.01 continuous operation. Soldering Parameters 0.001 0.05 0.1 1 10 100 Recommended Process Parameters: 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. © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/10/16

Axial Lead & Cartridge Fuses PICO® ll Fuse > Very Fast-Acting Fuse > 263 Series Product Characteristics Encapsulated, Epoxy-Coated MIL-STD-202, Method 201 (10–55 Body: Solder Coated Copper Leads. Hz); MIL-STD-202, Method 204, Test Vibration Materials RoHS compliant Condition C (55–2000 Hz at 10 G’s Product: Pure Tin–coated Copper wire Peak) leads MIL-STD-202, Method 101, Salt Spray Solderability MIL-STD-202. Method 208. Test Condition B (48 hrs.) MIL-STD-202, Method 302, Insulation Resistance Product Marking Body marking, current rating and logo Test Condition A (10,000 ohms (After Opening): minimum at 100 volts) Operating –55ºC to +125ºC (Consider re-rating) Resistance to Soldering MIL-STD-202, Method 210, Temperature Heat Test Condition C (10 sec. at 260ºC) Shock MI (1IL0-S0T GD’s-2 p0e2a, kM foert h6o md 2ill1is3e, cToenstd sC)ondition Thermal Shock MCoILn-dSiTtiDon-2 B02 (,– 5M5eºCth otod 112057,º CTe) st Moisture Resistance MIL-STD-202, Method 106 MIL-STD-202, Method 211, Lead Pull Force Test Condition A (will withstand 7 lb. axial pull test) Dimensions Part Numbering System 0263 xxxx W R T1 L 62.7 (2.468") 52.4 (2.062")* 27.78 27.78 (1.094") 7.11 (.280") (1.094") 3.94 (.16") Series 0.64 (.025") LF 3 1/2 A MAX Current Rating 250 V Refer to Amp Code column of 6.35 (.25") 5.0 (.197") 6.35 (.25") tape tape Electrical Characteristics Table LF 3 1/2 A Quantity 250 V W = 3000 M = 1000 H = 100 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 Quantity Packaging Code T1: 52.4mm (2.062”) Please refer to available quantities EIA 296 Tape and Reel 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"). © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/10/16