SF2039B

Overview

The SF2039B is a Surface Acoustic Wave (SAW) filter manufactured by Murata Electronics, designed for signal conditioning applications. It operates at a center frequency of 72.54 MHz and features a bandwidth of 4 MHz. The component exhibits an insertion loss of 10.5 dB. It is housed in a compact 10-SMD, no-lead package with SMP-03-10 dimensions. This device is specifically engineered for use as an Intermediate Frequency (IF) SAW filter within Satellite Digital Audio Radio Service (SDARS) systems.

Feature Summary

• Engineered for precise intermediate frequency filtering in satellite digital audio radio service architectures
• Utilizes surface acoustic wave technology to achieve stable signal conditioning at 72.54 MHz
• Designed for surface-mount integration via a leadless SMD package configuration

Applications

• Satellite Digital Audio Radio Service (SDARS) receiver front-ends
• Intermediate frequency (IF) signal processing stages
• RF signal conditioning modules requiring 72.54 MHz center frequency filtering

Procurement Notes

Verify current lifecycle status before procurement, as the SF2039B is classified as obsolete or discontinued by major distributors. Confirm availability through authorized channels or secondary markets if immediate replacement is required. Ensure that any sourced units match the original SMP-03-10 package specifications to maintain compatibility with existing board layouts and assembly processes.

Selection Notes

Select this component only when a 72.54 MHz center frequency and 4 MHz bandwidth are strictly required for SDARS IF applications. Consider the 10.5 dB insertion loss impact on system sensitivity during design. Evaluate alternative SAW filters from the same manufacturer family if supply chain continuity is a priority, given the obsolete status of this specific part number.

Part Context

The SF2039B belongs to Murata's SF series of SAW filters, which are widely utilized in communication equipment for frequency selection and interference rejection. This specific model targets the automotive satellite radio market, providing necessary signal integrity for digital audio reception. Its design reflects Murata's specialization in miniaturized RF components for consumer electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the obsolete status. Engineers should consult Murata's official obsolescence notices or contact technical support directly for recommended cross-reference models that meet identical electrical and mechanical specifications.