Uttelfuse* Expertise Applied | Answers Delivered Surface Mount Fuses Ceramic Chip Fuse > 400M Series The 400M Series is an 0603 fast acting fuse that is best suited for applications that require relatively low resistance. The part is 100% Lead-free, RoHS compliant, and Halogen-free fuse. It is designed to provide over-current protection to circuits that operate under high operating temperatures of up to 150°C. Electrical Characteristics Notes: 1. Cold resistance measured at less than 10% of rated current at 23°C. 2. I2t values stated for 1msec opening time. © 2019 Littelfuse, Inc. Specifications are subjectto change without notice. Application tusting is strongly recommended. Revised: 07/30/19

Surface Mount Fuses Ceramic Chip Fuse > 400M Series Average Time Current Curves Temperature Re-rating Curve Note: Re-rating depicted in this curve is in addition to the standard re-rating of 20% for continuous operation. Soldering Parameters Pb – free assembly - Temperature Min (Ts(min)) - Temperature Max (Ts(max)) Average Ramp-up Rate (Liquidus Temp (TL) to peak) TS(max) to TL - Ramp-up Rate Time within 5°C of actual peak Temperature (tp) Ramp-down Rate Time 25°C to peak Temperature (TP) © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/30/19 Reflow Condition...

Surface Mount Fuses , Ceramic Chip Fuse > 400M Series Expertise Applied | Answers Delivered Product Characteristics Part Numbering System 0400 0026 W R SERIES- AMP CODE Refer to Electrical Characteristics Table PACKING ODE R = Tape and Reel QUANTITY CODE W = 3000 pieces N = 5000 pieces Disclaimer Notice - 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...