Axial Lead Fuses 3.6 x 9mm > 777 Series 777 Series Axial Lead Fuse PS E RoHS Description The 777 Series is an axial lead 3.6mm x9mm fuse, designed for overcurrent protection in electronic appliance charger applications. The robust design enables the device to withstand up to 24 hits of 7.5kV ringwave surge and, its epoxy coating helps open safely on a direct short condition without producing soot, sparks, sounds. The enhanced electrical characteristics of the 777 Series make it ideal for use in wall-mounted chargers for smartphones and tablets. This series provides protection from catastrophic failures and safety hazard when experiencing direct shorting on an AC plug. Features Agency Approvals Agency PS E Agency File Number Ampere Range SU05024-13001 1.25A E10480 1.25A R 50267375 1.25A NBK111010-E10480 1.25A CQC14012107199 1.25A • Enhanced interrupting rating • Higher surge withstand capability • Compact 3.6 x 9mm footprint saves board space • Epoxy Coating Applications • Smartphone and tablet wall-mount chargers • Power Supplies for consumer electronics Electrical Characteristics for Series Additional Information % of Ampere Rating Datasheet Resources Samples Opening Time 150% 1 hours, Minimum 275% 10 milliseconds, Minimum 3 seconds, Maximum Electrical Characteristics by Item Amp Code 1.25 Voltage Rating Interrupting Rating 250 V 50A @ 250 V AC Nominal Cold Resistance (Ohms) Nominal Melting l2t (A2 sec) 0.070 2.70 Agency Approvals PS E X X X X X © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/27/15 Axial Lead Fuses 3.6 x 9mm > 777 Series Temperature Rerating Curve Average Time Current Curves Soldering Parameters - Wave Soldering Recommended Process Parameters: 280 260 Wave Parameter 240 Lead-Free Recommendation Preheat: 220 200 (Depends on Flux Activation Temperature) 180 160 140 120 100 80 60 40 (Typical Industry Recommendation) Temperature Minimum: 100° C Temperature Maximum: Preheat Time: 150° C 60-180 seconds Solder Pot Temperature: 260° C Maximum Solder Dwell Time: 2-5 seconds Time (Seconds) Cooling Time Preheat Time Dwell Time 230 240 220 210 200 190 180 170 160 150 140 130 120 110 90 100 80 70 60 50 40 20 0 0 30 20 10 Temperature (°C) - Measured on bottom side of board 300 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. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/27/15 Axial Lead Fuses 3.6 x 9mm > 777 Series Product Characteristics Materials Encapsulated, Epoxy Coated body Pure-Tin-coated Copper Lead Wire Operating Temperature -55°C to 125°C Terminal Strength MIL-STD-202F Method 211A, Test Condition A Thermal Shock MIL-STD-202F, Method 107G Test Condition B3 (5 cycles -65°C to +125°C) Solderability Reference IEC 60127 Second Edition 2003-01 Annex A Vibration MIL-STD-202F, Method 201A (10-55 Hz) Product Marking Body: Brand Logo, Current Rating Characteristic "F" rated voltage Humidty MIL-STD-202, Method 106, High Humidity (90-98%RH), Heat (65°C) Packaging Tape & Reel (1000 pcs/reel) Salt Spray MIL-STD-202F, Method 101D, Test Condition B Dimensions Part Numbering System 26mm 9mm 0777 1.25 M R E 3.6mm T1 P Series Amp Code Refer to Amp Code column of Electrical Characteristics Table 0.6mm Quantity Code M = 1000 Packaging Code R = Tape and reel Option Code 5.00 9mm E = Axial Leaded Lead Length 0.8 max. 52.4 T1 = Lead length 6.35 Lead-free P = Lead-Free Others = Special Options Please call Littelfuse for detail All dimensions in mm Packaging Packaging Option Packaging Specification Quantity Packaging Code Taping Width Tape & Reel EIA 296 1000 MRET1 T1 = 52mm (2.062) © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/27/15