BSUN Usagi/537 Linear Switch

The BSUN Usagi/537 Linear Switch is a high-quality mechanical switch designed for a smooth typing experience. Priced at $0.35 each, it features a linear switch type with a designer label of Xida and is manufactured by BSUN. Key specifications include a stem made from Y3 material, a top housing of polycarbonate (PC), and a modified PA66 bottom housing reinforced with fiberglass. The switch operates with a force of 45±5g and has a bottom-out force of 51g±5g, with a pre-travel distance of 1.9mm and total travel of 3.6mm. The switch is equipped with a 20mm KOS single-stage extended spring and comes factory-lubed for enhanced performance. Users can expect a clacky or poppy sound profile with minimal stem wobble, providing a satisfying long-pole feel during typing. BSUN has made significant improvements to their manufacturing process, including advancements in molding design and factory lubrication techniques, addressing previous issues such as stem wobble and hollow sounds. Overall, the Usagi/537 aims to deliver a reliable and enjoyable typing experience.