SF2423D

Overview

The RFMi SF2423D is a Surface Acoustic Wave (SAW) bandpass filter designed for general-purpose RF signal conditioning. It operates at a center frequency of 480 MHz with a bandwidth ranging from 470 MHz to 490 MHz, providing a passband width of approximately 20 MHz. The component features a maximum insertion loss of 3 dB and maintains a system impedance of 50 Ohms. Rated for a voltage of 3 V, it supports an operating temperature range from -45°C to +125°C. The device utilizes an SMD/SMT surface mount package identified as SM3838-8, suitable for board mounting applications.

Feature Summary

• Surface Acoustic Wave technology for precise RF signal filtering
• Bandpass configuration centered at 480 MHz
• Low insertion loss characteristics for efficient signal transmission
• Wide operational temperature range for environmental stability

Applications

• General-purpose RF signal conditioning circuits
• Wireless communication systems requiring 480 MHz channel selection
• RF front-end modules in consumer electronics
• Signal processing stages in broadcast equipment

Procurement Notes

Verify the specific package variant against the official datasheet, as listings may reference SM3838-8 or similar designations. Confirm RoHS compliance status directly with the manufacturer documentation before integration. Ensure that the 3 V rating and 50 Ohm impedance align with your circuit design requirements. Cross-reference the center frequency and bandwidth specifications to guarantee compatibility with your target application's spectral needs.

Selection Notes

Select this component when a narrow bandpass response around 480 MHz is required for RF signal integrity. The SAW construction offers compact form factors suitable for space-constrained designs. Consider the thermal performance limits if operating near the extreme ends of the specified temperature range. Evaluate the insertion loss impact on overall system gain and noise figure during the schematic phase.

Part Context

This part belongs to the SF series of signal conditioning components manufactured by RFMi. The series includes various SAW filters tailored for different frequency bands and bandwidths. These components are engineered to provide reliable filtering solutions for modern electronic devices, ensuring minimal signal distortion within their designated passbands.

Replacement Considerations

Direct substitutes must match the 480 MHz center frequency, 50 Ohm impedance, and compatible package dimensions. Verify that alternative parts meet the same insertion loss and bandwidth specifications to maintain circuit performance without redesign.