This is the SSB1004390?ZF, an electronic component from Superworld Electronics. As an authorised distributor, Supreme Components International guarantees the authenticity and quality of this product. While the exact specifications and function of this particular component are not currently available, Superworld Electronics is known for producing reliable and high-performance electronic parts. This component may be suitable for a variety of applications depending on its specific characteristics. Please contact us with any questions you may have regarding this product or to discuss your project needs. We can help you determine if this component is the right fit for your application. Supreme Components International is your trusted source for genuine electronic components.