MF-R050 PTC Resettable Fuse: Reliable Overcurrent Protection for Electronics | Bourns Inc. 2025-04-20 Discover the MF-R050 PTC resettable fuse by Bourns Inc. a high-performance, reusable circuit protection solution with 60V/500mA ratings, fast trip response, and wide temperature range. Ideal for consumer electronics, automotive, and industrial applications.