Axial Lead Fuses 3.6 x 9mm > 777 Series PS RoHS E 777 Series Axial Lead Fuse 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 Enhanced Compact 3.6 x 9mm Agency Agency File Number Ampere Range interrupting rating footprint saves board space Higher surge SU05024-13001 1.25A withstand capability Epoxy Coating E10480 1.25A Applications R 50267375 1.25A Smartphone and tablet Power Supplies for PS E NBK111010-E10480 1.25A wall-mount chargers consumer electronics CQC14012107199 1.25A Electrical Characteristics for Series Additional Information % of Ampere Opening Time Rating 150% 1 hours, Minimum 10 milliseconds, Minimum 275% 3 seconds, Maximum Electrical Characteristics by Item Nominal Agency Approvals Nominal Voltage Cold Amp Code Interrupting Rating Melting Rating Resistance 2 2 PS l t (A sec) E (Ohms) 1.25 250 V 50A 250 V AC 0.070 2.70 X X X X X 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/27/15Axial Lead Fuses 3.6 x 9mm > 777 Series Temperature Rerating Curve Average Time Current Curves Soldering Parameters - Wave Soldering 300 Recommended Process Parameters: 280 260 Wave Parameter Lead-Free Recommendation 240 220 Preheat: 200 (Typical Industry Recommendation) (Depends on Flux Activation Temperature) 180 Temperature Minimum: 100 C 160 140 Temperature Maximum: 150 C 120 Preheat Time: 60-180 seconds 100 80 Solder Pot Temperature: 260 C Maximum 60 40 Solder Dwell Time: 2-5 seconds 20 0 Recommended Hand-Solder Parameters: Time (Seconds) Solder Iron Temperature: 350 C +/- 5C Preheat Time Cooling Time Dwell Time Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Re ow process. 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/27/15 Temperature (C) - Measured on bottom side of board 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240