About This Guide
Fuses are current-sensitive devices that provide reliable protection for systems, components, or circuits by melting under current overload conditions. Choosing the right fuse for your application can be an overwhelming, time-consuming process, even for a seasoned electronics design engineer. This user-friendly Fuseology Design Guide makes the fuse selection process quick and easy, helping you optimize the reliability and performance of the application.
Specifications, descriptions, and illustrative material in this literature are as accurate as known at the time of publication, but are subject to change without notice. Visit Littelfuse.com for more information.
Fuseology Design Guide Fuse Characteristics, Terms, and Consideration Factors
1
Table of Contents Page
Fuse Characteristics, Terms, and Consideration Factors 3-5 Tables Common Cartridge Fuse Sizes 4 Common Surface Mount Fuse Sizes Graphs Typical Solder Profile 4 Current-Limiting Effect of Fuses 5 Fuse Selection Checklist 6-8 Graphs Temperature Rerating Curves 6 Time Current Curve Example 7 Common Pulse Waveforms Pulse Energy Model (I
2
t) Pulse Cycle Withstand Capability 8 Standards and Certifications 9-11 Tables Fuse Certification Schemes 9 Minimum IR for Dual-Rated Fuses IEC 60127 Parts IEC 60127 Maximum Temperature Rise 10 IEC 60127 Time/Current Terms IEC 60127 Overload Gates IEC 60127 Breaking Capacity Terms IEC 60127 Breaking Capacity Amperage Chinese Standards Comparison to IEC Standards 11 Certification Symbols Legal Disclaimers 12
Previous Page