The RFBPF1109B301T with EMI/RFI Filters SMD (Surface Mount Device) is a multi-layer ceramic filter (LC, RC networks) measuring 1.1x0.90x0.6mm and is RoHS compliant. It is designed and manufactured by Walsin, a leading global provider of power management solutions, including capacitors and chip inductors, as well as patented RF filters and filters used for EMI/RFI applications. The device uses an optimized combination of Technology-Focused Intelligent Filter Technology and LC or RC networks to provide a fully integrated, cost-effective, and compact solution for suppressing interference from wide frequency ranges. Its low insertion loss, wide passband ripple rejection, and high Q factors perform superbly across a variety of communication, automotive, consumer, industrial, and medical electronic systems. The device also features excellent ROHS/Solder resistance, making it the perfect filter solution for applications where space is at a premium.