The B39202B5140U410 is a SAW (Surface Acoustic Wave) filter from EPCOS (TDK). SAW filters are commonly used in radio frequency (RF) applications to selectively pass or reject signals within a specified frequency range. They offer a compact size, low insertion loss, and excellent frequency selectivity, making them suitable for various wireless communication systems.

Applications:

• Cordless phones
• Remote control systems
• Automotive keyless entry systems
• Wireless security systems
• ISM band applications (e.g., industrial, scientific, and medical equipment)

Features:

• High selectivity: Precisely filters out unwanted signals, reducing interference.
• Low insertion loss: Minimizes signal attenuation within the desired frequency band.
• Small size: Enables compact and lightweight designs.
• Surface mount technology (SMT): Facilitates automated assembly on printed circuit boards (PCBs).
• Stable performance: Maintains consistent characteristics over a wide range of operating conditions.

Benefits:

• Improved signal quality: Enhances the performance of wireless communication by reducing noise and interference.
• Extended communication range: Minimizes signal loss, allowing for greater distances.
• Reduced power consumption: Improves energy efficiency by efficiently filtering signals.
• Simplified circuit design: Integrates filtering functionality, reducing the need for discrete components.
• Enhanced reliability: Ensures consistent performance over a wide range of operating conditions.

Additional Details:

The B39202B5140U410 SAW filter leverages the piezoelectric effect to generate and detect acoustic waves on a piezoelectric substrate. The frequency response of the filter is determined by the design of the interdigital transducers (IDTs) patterned on the substrate, which generate and detect the surface acoustic waves. The SMT package is designed for automated assembly. The part number indicates specific frequency characteristics and filtering parameters. EPCOS (TDK) is known for manufacturing high-quality components. These filters typically operate in the hundreds of MHz range. This specific part is categorized as END-OF-LIFE, meaning it is no longer in production but may still be available from distributors or in existing equipment. The key characteristics of the filter depend on its frequency application and the related bandwidth, insertion loss, and ripple values detailed in the datasheet.