The EPCOS (TDK) B39212-B8651-P810-S05 is a SAW (Surface Acoustic Wave) filter, an essential component used in wireless communication systems to selectively filter signals. Its main purpose is to allow desired signals within a specific frequency range to pass through with minimal attenuation, while simultaneously attenuating or blocking unwanted signals outside that range. This ensures clear signal reception and reduces interference, leading to improved 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: Designed for operation at a specific frequency, likely around 2.1 GHz but the specific datasheet should be consulted.
• Low Insertion Loss: Minimizes signal attenuation within the passband, ensuring that the desired signal remains strong and clear.
• High Attenuation: Provides excellent rejection of out-of-band signals, reducing interference and improving the signal-to-noise ratio.
• Compact Size: The small form factor allows for integration into compact wireless 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 across 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 RF 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 such as the B39212-B8651-P810-S05 utilize the piezoelectric effect, converting electrical signals into mechanical surface acoustic waves and then back into electrical signals. The filter's frequency response is determined by the design of the interdigital transducers (IDTs) on the piezoelectric substrate. Accurate impedance matching is crucial for achieving optimal performance. Typically, these filters are designed to operate with a 50-ohm impedance, so attention to the surrounding circuitry is important to reduce signal reflections and insertion losses. Always refer to the datasheet for precise operating conditions and performance characteristics.

Technical Specifications (Typical):

• Center Frequency: Approximately 2.1 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