B39321R733U310 Equivalent & Substitute Parts

Part Overview

The B39321R733U310 is a 315.03 MHz Surface Acoustic Wave (SAW) filter manufactured by Qualcomm for RF front-end (RFFE) applications. This component operates as a general-purpose RF filter with 1.3 dB insertion loss in an 8-SMD, no-lead surface mount package. The part is classified as obsolete, making equivalent substitute components necessary for ongoing design support and procurement continuity. Substitute parts must maintain compatibility with the original electrical specifications, mechanical form factor, and environmental compliance requirements.

Substiute Parts

B39321R733U310

Qualcomm (RF front-end (RFFE) filters)In Stock: 1188B39321R733U310 Datasheet

Current PartRFQ

B39321R0993H110

Qualcomm (RF front-end (RFFE) filters)In Stock: 695B39321R0993H110 Datasheet

SimilarRFQ

ECS-SDR1-3150-TR

ECS Inc.In Stock: 1737ECS-SDR1-3150-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the B39321R733U310 are qualified based on the following critical parameters:

Frequency Compatibility: Center frequency must operate within the 315 MHz band to maintain RF circuit tuning and filter response characteristics.

Package Compatibility: All substitutes must use 8-SMD, no-lead surface mount packaging with matching physical dimensions (5.00 mm x 5.00 mm footprint) to ensure PCB layout compatibility.

Electrical Performance: Insertion loss and bandwidth characteristics must support the original application requirements for general-purpose RF filtering.

Environmental & Compliance: All substitutes must maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status to meet regulatory and manufacturing requirements.

Product Availability: Active product status is preferred to ensure long-term supply chain continuity, though active alternatives may have minor specification variations within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

B39321R0993H110 (Qualcomm): This substitute maintains Qualcomm manufacturer continuity and active product status. Both components share the same 8-SMD, no-lead package format and identical compliance certifications (ROHS3, MSL 1, REACH unaffected). The part is available in Tape & Reel packaging, supporting automated assembly processes. Detailed electrical specifications for this variant are not provided in the reference data; verification of frequency and insertion loss compatibility with the original application is required before design implementation.

ECS-SDR1-3150-TR (ECS Inc.): This substitute operates at 315 MHz center frequency with ±75 kHz tolerance, providing frequency band compatibility with the original 315.03 MHz specification. The component is classified as active product status, ensuring long-term availability. Physical dimensions match the original part (5.00 mm x 5.00 mm), with maximum height of 1.50 mm (0.15 mm greater than the original). All environmental and compliance ratings align with the original specification (ROHS3, MSL 1, REACH unaffected). Operating temperature range of -40°C to 85°C is specified. This part is supplied in Tape & Reel format for production environments.

Both substitutes satisfy the core compatibility criteria of frequency band operation, package form factor, and regulatory compliance. Selection between alternatives depends on application-specific requirements for insertion loss performance and detailed electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Why is the B39321R733U310 being replaced?

A: The B39321R733U310 is classified as obsolete product status. Substitute components ensure design continuity and procurement availability for applications requiring 315 MHz SAW filter functionality.

Q: What are the critical compatibility criteria for substitution?

A: Substitutes must operate within the 315 MHz frequency band, use 8-SMD no-lead surface mount packaging with 5.00 mm x 5.00 mm footprint dimensions, maintain ROHS3 compliance, and achieve MSL 1 rating. Insertion loss and bandwidth performance must support the original application requirements.

Q: Can the ECS-SDR1-3150-TR be used as a direct replacement?

A: The ECS-SDR1-3150-TR meets the core compatibility requirements: 315 MHz center frequency operation, matching 8-SMD no-lead package, identical footprint dimensions, and full compliance certification alignment. Maximum height is 1.50 mm compared to 1.35 mm for the original part; PCB clearance must be verified for space-constrained applications.

Q: What is the difference between the two Qualcomm substitutes?

A: B39321R733U310 is obsolete; B39321R0993H110 is active product status. Both share identical package specifications and compliance ratings. Detailed electrical parameter differences are not specified in available reference data.

Q: Are these parts available in different packaging formats?

A: Both substitute parts are supplied in Tape & Reel (TR) format, supporting automated pick-and-place assembly. The original part packaging format is not specified in the reference data.

Q: Do all substitutes meet environmental compliance requirements?

A: Yes. All three parts (original and substitutes) are ROHS3 compliant, carry MSL 1 (unlimited moisture sensitivity) rating, and maintain REACH unaffected status.

Q: What is the frequency tolerance specification for substitutes?

A: The ECS-SDR1-3150-TR specifies ±75 kHz frequency tolerance. Tolerance specifications for the B39321R0993H110 are not provided in available reference data.