The Littelfuse F09B SB .25A is a reliable fuse designed for circuit protection in various electrical applications. With a current rating of 0.25A and a voltage rating of 250V, this fuse is ideal for low-power circuits. Its fast-acting design ensures immediate response to overcurrent conditions, safeguarding sensitive components. Constructed from high-quality materials, the F09B SB offers excellent durability and longevity. Its compact size allows for easy installation in tight spaces, making it a versatile choice for professionals seeking dependable circuit protection.