SF2038B-3

Overview

The RFMi SF2038B-3 is a Surface Acoustic Wave (SAW) filter designed for signal conditioning applications. It operates at a nominal center frequency of 76.5 MHz, with a passband range spanning from 74.39 MHz to 78.61 MHz. The component features a bandwidth of 4 MHz and supports voltage ratings up to 30 V. Electrical characteristics include an input impedance of 175 ohms and an output impedance of 1 kohm. It is housed in the SMP03-S-12 surface-mount package, suitable for automated assembly processes.

Feature Summary

• Utilizes Surface Acoustic Wave technology for precise frequency selection
• Designed for compact surface-mount integration
• Provides stable signal conditioning within specified temperature ranges

Applications

• RF signal filtering in communication systems
• Intermediate frequency stages in receivers
• Signal conditioning modules requiring 76.5 MHz selectivity

Procurement Notes

Verify the specific datasheet version for insertion loss and return loss tolerances before finalizing designs. Confirm that the SMP03-S-12 footprint matches the target PCB layout. Ensure operating conditions remain within the -40°C to +85°C thermal limits to maintain performance specifications.

Selection Notes

Select this component when a narrow 4 MHz bandwidth is required at 76.5 MHz. The 175/1000 ohm impedance configuration suits specific circuit matching networks. Consider the SMD package constraints for high-density board designs requiring robust SAW filter performance.

Part Context

This part belongs to the RFMi SAW filter family, which offers various frequency options for wireless and digital applications. The SF2038B-3 variant specifically targets the 76.5 MHz band, providing a standardized solution for manufacturers needing reliable signal integrity without custom filter development.

Replacement Considerations

Cross-reference with SF2039B-3 if the application requires a 72.54 MHz center frequency instead of 76.5 MHz. Verify impedance and package compatibility before substituting other SAW filters in the same series.