B39431R2701U310 Equivalent & Substitute Parts

Part Overview

The B39431R2701U310 is a 433.92 MHz Surface Acoustic Wave (SAW) filter manufactured by Qualcomm, designed for RF front-end (RFFE) applications. This component operates as a resonator with 9.2 dB insertion loss in an 8-SMD, No Lead surface mount package. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations where this frequency band is required.

Substiute Parts

B39431R2701U310

Qualcomm (RF front-end (RFFE) filters)In Stock: 1395B39431R2701U310 Datasheet

Current PartRFQ

ASR433.92E-T

Abracon LLCIn Stock: 2030ASR433.92E-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B39431R2701U310 is determined by the following critical parameters:

Primary Matching Criteria:

• Center frequency: 433.92 MHz (exact match required)
• Package configuration: 8-SMD, No Lead format
• Mounting technology: Surface Mount
• Physical dimensions: 5.00 mm x 5.00 mm footprint with 1.35 mm maximum height
• Environmental compliance: ROHS3 and REACH status alignment

Secondary Compatibility Factors:

• Moisture sensitivity classification: MSL 1 or equivalent
• Operating temperature range compatibility with application requirements
• Insertion loss characteristics within acceptable system parameters

The ASR433.92E-T from Abracon LLC satisfies all primary matching criteria, sharing identical center frequency, package type, mounting method, and physical dimensions with the original component.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement Applications:

The ASR433.92E-T is suitable as a substitute for the B39431R2701U310 based on matching electrical frequency specification, identical package geometry, and equivalent environmental compliance certifications. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment in production environments.

Product Status Consideration:

The original B39431R2701U310 is classified as obsolete, while the ASR433.92E-T maintains active product status with current manufacturing availability. This status difference supports the use of the Abracon component for new procurement and long-term supply chain continuity.

Compliance Alignment:

Both components share identical moisture sensitivity classification (MSL 1) and equivalent regulatory certifications, eliminating compliance-related barriers to substitution in applications where the original part is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the ASR433.92E-T directly replace the B39431R2701U310 in existing designs?

A: Yes, the ASR433.92E-T provides direct replacement capability based on matching center frequency (433.92 MHz), identical 8-SMD No Lead package configuration, and equivalent physical dimensions (5.00 mm x 5.00 mm x 1.35 mm). Both components are surface mount devices with identical footprints.

Q: What is the primary reason for seeking a substitute for the B39431R2701U310?

A: The B39431R2701U310 is classified as obsolete. The ASR433.92E-T is an active product with current manufacturing support, ensuring reliable supply availability for new designs and ongoing production requirements.

Q: Are there environmental compliance differences between these components?

A: No. Both the B39431R2701U310 and ASR433.92E-T maintain ROHS3 compliance and REACH unaffected status. Moisture sensitivity levels are identical at MSL 1 (Unlimited), indicating equivalent handling and storage requirements.

Q: What operating temperature range should be considered for the ASR433.92E-T?

A: The ASR433.92E-T operates across -40°C to 85°C. System designers must verify this range meets application requirements, as the original B39431R2701U310 operating temperature specification is not provided in available documentation.

Q: Are the physical dimensions identical between both components?

A: Yes. Both components share identical dimensions of 5.00 mm length x 5.00 mm width x 1.35 mm maximum height, ensuring PCB layout compatibility without redesign requirements.

Q: What packaging formats are available for these components?

A: The B39431R2701U310 is supplied in Cut Tape (CT) and Digi-Reel format. The ASR433.92E-T is supplied in Tape & Reel (TR) format. Both are suitable for automated assembly processes.