SF2073B Equivalent & Substitute Parts

Part Overview

The SF2073B is a 456MHz Surface Acoustic Wave (SAW) filter manufactured by Murata Electronics, designed for WiMax RF front-end applications. This component operates at a center frequency of 456MHz with a 10MHz bandwidth and 12.5dB insertion loss in a 10-SMD, No Lead surface mount package. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations where this frequency band and application remain relevant.

Substiute Parts

SF2073B

Murata ElectronicsIn Stock: 1520SF2073B Datasheet

Current PartRFQ

B39461B5032H810

Qualcomm (RF front-end (RFFE) filters)In Stock: 1001B39461B5032H810 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SF2073B is determined by strict alignment with the following critical parameters:

• Center Frequency: Must be 456MHz to maintain RF tuning and system performance in WiMax applications
• Bandwidth: Must be within the 10MHz specification range to preserve passband characteristics
• Package & Mounting: Must be 10-SMD, No Lead surface mount with identical footprint dimensions (7.00mm x 5.00mm) to ensure PCB compatibility
• Application Compatibility: Must be specified for WiMax RF filtering
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating for manufacturing and storage compatibility

The B39461B5032H810 (Qualcomm) meets these substitution criteria as a manufacturer-recommended alternative, sharing identical center frequency, compatible bandwidth specification, matching package footprint, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The B39461B5032H810 is a direct substitute for the SF2073B based on the following engineering criteria:

Frequency & Bandwidth Alignment: Both components operate at 456MHz center frequency with compatible bandwidth specifications (10MHz vs. 10.4MHz), ensuring RF performance equivalence in WiMax applications.

Package & Footprint Compatibility: Identical 10-SMD, No Lead package with matching 7.00mm x 5.00mm footprint dimensions enables direct PCB layout compatibility without redesign.

Compliance & Manufacturing: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring equivalent handling, storage, and manufacturing process compatibility.

Product Availability: The B39461B5032H810 is classified as Active, providing long-term supply continuity compared to the obsolete SF2073B status.

Performance Advantage: The substitute component demonstrates superior insertion loss performance (8.7dB vs. 12.5dB) and a lower profile (1.33mm vs. 2.00mm), offering potential system-level benefits without compromising functional requirements.

Frequently Asked Questions (FAQ)

Q: Can the B39461B5032H810 be used as a direct replacement for the SF2073B without PCB modifications?

A: Yes. Both components share identical center frequency (456MHz), matching package type (10-SMD, No Lead), and identical footprint dimensions (7.00mm x 5.00mm). No PCB layout changes are required for substitution.

Q: What is the significance of the bandwidth difference (10MHz vs. 10.4MHz)?

A: The 10.4MHz bandwidth of the B39461B5032H810 is compatible with the 10MHz specification of the SF2073B. The slightly wider bandwidth remains within acceptable WiMax RF filtering parameters and does not compromise system performance.

Q: Does the lower insertion loss of the B39461B5032H810 (8.7dB vs. 12.5dB) affect system design?

A: Lower insertion loss is a performance advantage. The B39461B5032H810 introduces less signal attenuation, which may improve overall RF chain efficiency. System designs based on the SF2073B specifications will operate within acceptable parameters with this substitute.

Q: Are there any compliance or certification differences between these components?

A: No. Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent compliance for manufacturing, storage, and deployment.

Q: Why is the SF2073B classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The B39461B5032H810, classified as Active, provides ongoing availability and supply chain continuity for 456MHz WiMax SAW filter applications.

Q: What is the impact of the height difference (2.00mm vs. 1.33mm)?

A: The B39461B5032H810 has a lower profile, which may provide advantages in space-constrained PCB designs. This difference does not affect electrical performance or functional compatibility.