DPX252500DT-5217A1

RF Multiplexers Overview

The TDK DPX252500DT-5217A1 is a surface-mount RF diplexer designed for dual-band applications. It operates in the low band of 1.57GHz to 1.58GHz and the high band of 2.4GHz to 2.5GHz, making it suitable for GPS and WLAN/Bluetooth systems. The component features a 1008 (2520 metric) package with an 8-pad board configuration. Key electrical specifications include a minimum attenuation of 25dB for both bands, with maximum attenuation reaching 33dB in the low band and 54dB in the high band. Return loss is specified at 23.0dB for the low band and 22.0dB for the high band. The device utilizes a multilayer ceramic structure and maintains a 50Ω impedance.

RF Multiplexers Feature Summary

• Provides high isolation between adjacent frequency bands without requiring manual adjustment
• Offers low insertion loss and a compact low-profile surface mount design
• Integrates dual-band filtering capabilities within a small footprint

RF Multiplexers Applications

• GPS receiver front-end modules
• WLAN and Bluetooth coexistence circuits
• Dual-mode wireless communication devices

RF Multiplexers Procurement Notes

This component is officially listed as obsolete by the manufacturer. End-of-life notifications indicate that production has ceased, and inventory will not be replenished after current stock depletion. Engineers must verify the final availability status through authorized distributors before integrating this part into new designs. Alternative solutions should be evaluated immediately to ensure long-term supply chain stability for ongoing or future projects.

RF Multiplexers Selection Notes

Select this diplexer when designing circuits requiring simultaneous operation at L1 GPS frequencies and 2.4GHz ISM bands. The 1008 package size is optimal for space-constrained portable electronics. Verify that the required attenuation levels meet system interference rejection standards. Ensure the PCB layout supports the specific 8-pad mounting configuration to maintain electrical performance and mechanical reliability during assembly processes.

RF Multiplexers Part Context

This part belongs to the TDK DPX series of multilayer diplexers. The series is characterized by small size, lightweight construction, and low profile. These components are engineered for RF connectivity applications where minimal insertion loss and high isolation are critical. The DPX series generally covers frequency ranges from 617MHz to 7.125GHz, offering versatile solutions for various wireless standards without external tuning requirements.

RF Multiplexers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Due to the obsolete status, direct replacements are not explicitly listed. Designers should consult TDK's official product maps for current active series alternatives that match the 1.57GHz/2.4GHz dual-band specification and 1008 package dimensions.