Why SMD Fuses Fail in the Field and How to Design Out the Risk

Originally presented on: September 10, 2026
Thermal cycling, vibration, and inrush events expose weaknesses that standard SMD fuse construction can't survive: multi-piece terminations that crack, fragile housings, and inadequate arc suppression. The result is field failures that cost far more than the component itself.
This webinar examines these failure modes and introduces AEM’s CMF fuse technology, featuring a one-piece fuse link and termination, a durable ceramic body, and advanced arc-suppression materials engineered to eliminate them. Design and component engineers working in higher-power applications will learn how to evaluate fuse construction before it becomes a reliability problem.
Learning Objectives:
- Why SMD fuses fail in real-world applications despite meeting electrical specifications.
- Determine which fuse design characteristics improve resistance to thermal, mechanical, and electrical stresses.
- Why CMF fuses are superior when it comes to power density, DCR and safety margin.















