The EPCOS (TDK) B39202-B8004-P810 is a SAW (Surface Acoustic Wave) filter designed for use in wireless communication systems. These filters are crucial components for selectively passing desired signals within a specific frequency range while attenuating unwanted signals, thereby improving overall system performance.

Applications

• Mobile communication systems (cellular base stations, handsets, and repeaters)
• Wireless infrastructure
• RF front-end modules
• Satellite communication systems
• ISM band applications

Features

• Optimized Frequency: Specifically designed for operation within a particular frequency band, likely around 2 GHz (check datasheet for exact frequency).
• Low Insertion Loss: Minimizes signal attenuation within the passband, ensuring strong signal transmission and reception.
• High Attenuation: Provides excellent rejection of out-of-band signals, reducing interference and improving signal-to-noise ratio.
• Compact Size: Small form factor allows for integration into space-constrained devices and modules.
• Surface Mount Device (SMD): Enables easy and cost-effective assembly using standard SMT techniques.
• RoHS Compliant: Complies with environmental regulations, ensuring the product is free from hazardous substances.
• Stable Performance: Offers consistent and reliable performance over a wide range of operating temperatures.

Benefits

• Improved Signal Quality: Low insertion loss and high attenuation contribute to clearer and more reliable communication.
• Reduced Interference: Effective filtering minimizes the impact of unwanted signals, improving system performance in noisy environments.
• Compact Design: Suitable for use in small devices and modules where space is limited.
• Cost-Effective Manufacturing: SMD packaging and reliable performance reduce assembly and maintenance costs.
• Environmental Compliance: Meets environmental standards for lead-free manufacturing.

Additional Details

SAW filters, like the B39202-B8004-P810, leverage the piezoelectric effect, converting electrical signals into mechanical surface acoustic waves. These waves propagate along the surface of a piezoelectric material and are then converted back into electrical signals. The design of the interdigital transducers (IDTs) on the surface determines the filter's frequency response characteristics. For optimal performance, proper impedance matching and PCB layout are crucial. Typically designed to operate with a 50-ohm impedance, careful attention should be paid to the surrounding circuitry to minimize signal reflections and losses.

Technical Specifications (Typical):

• Center Frequency: Approximately 2 GHz (Consult datasheet for precise value)
• Insertion Loss: (Consult datasheet for specific value)
• Attenuation: (Consult datasheet for specific value)
• Impedance: 50 Ohms
• Operating Temperature Range: (Consult datasheet for specific range)
• Package: SMD