SF2138B-1

Overview

The SF2138B-1 is a Surface Acoustic Wave (SAW) bandpass filter manufactured by RFMi. It operates within a frequency range of 137.88 MHz to 150.38 MHz, with a center frequency of 144.132 MHz. The device features a bandwidth of 13.3 MHz and an insertion loss of 13.7 dB. It is rated for a maximum voltage of 30 V and functions reliably between -45°C and +105°C. The component utilizes an SMD/SMT termination type in the SMP03-10 package.

Feature Summary

• Surface Acoustic Wave technology for signal conditioning
• Bandpass filtering capability within specified frequency range
• Board mount installation via SMD/SMT termination

Applications

• RF signal conditioning
• Intermediate frequency filtering
• Wireless communication systems

Procurement Notes

Verify that the specific part number SF2138B-1 matches the required frequency and bandwidth specifications for your design. Confirm the SMP03-10 package dimensions align with your PCB layout constraints. Ensure the operating temperature range of -45°C to +105°C meets your environmental requirements. Check RoHS compliance status if restricted substances are a concern. Validate the 30 V rating against your circuit's voltage levels.

Selection Notes

Select this component when a SAW filter with a center frequency near 144 MHz is required. Consider the 13.3 MHz bandwidth for applications needing moderate selectivity. The low insertion loss of 13.7 dB is suitable for maintaining signal integrity. The wide temperature range supports operation in harsh environments. The SMD package facilitates automated assembly processes.

Part Context

This component belongs to the SF series of signal conditioning products from RFMi, an Akoustis brand. The series includes various RF components based on SAW, Xtal, and Ceramic technologies. The SF2138B-1 specifically addresses needs for tuned bandpass filtering in the VHF spectrum.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official RFMi resources or authorized distributors for cross-reference information regarding compatible alternatives.