Püschel Feinsicherungen Cartridge Fuses Micro fuse 623242 - Püschel Feinsicherungen FSF0,5B, The Püschel Feinsicherungen FSF0,5B is a micro glass cartridge fuse, measuring 5 mm x 20 mm, designed for quick response with a rating of 0.5 A and 250 V. This fuse is ideal for protecting sensitive electronic circuits in various applications due to its fast-blow characteristics. Sold in packs of 10, it is commonly used in devices requiring reliable overcurrent protection. Püschel FSF05B Micro Fuse 5x20mm 0.5A 250V Quick Response 10 Pieces