The BEL FUSE 0685-4000-01 is a high-quality fuse chip designed for very fast acting responses. With a current rating of 4A and voltage rating of 125V, this surface-mount device (SMD) features solder pads in a 1206 package size, measuring 3.2 x 1.58 x 0.58mm. The ceramic construction provides durability and reliability, making it ideal for a variety of electronic applications. This fuse is sold in tape and reel packaging and is certified to meet CE, CSA, and cULus safety standards.