TAS5631PHD Equivalent & Substitute Parts

Part Overview

The TAS5631PHD is a Class D audio amplifier IC from Texas Instruments' PurePath™ HD series, designed for mono or stereo audio applications with maximum output power of 600W at 2Ω (mono) or 300W per channel at 4Ω (stereo). The device integrates digital inputs, thermal protection, short-circuit protection, and depop functionality in a 64-HTQFP surface mount package.

The TAS5631PHD carries a "Not For New Designs" product status, indicating that Texas Instruments has transitioned this component out of active development. Identifying equivalent substitute parts is necessary for ongoing production support, design continuity, and supply chain management for existing applications utilizing this amplifier IC.

Substiute Parts

TAS5631PHD

Texas InstrumentsIn Stock: 1067TAS5631PHD Datasheet

Current PartRFQ

TAS5631BPHD

Texas InstrumentsIn Stock: 1239TAS5631BPHD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TAS5631PHD are identified based on strict electrical and mechanical parameter matching within the Class D amplifier category. The substitution criteria are:

Electrical Parameters (Must Match):

• Amplifier topology: Class D
• Output configuration: 1-Channel (Mono) or 2-Channel (Stereo)
• Maximum output power: 600W @ 2Ω (mono) and 300W @ 4Ω (stereo)
• Supply voltage range: 25V ~ 52.5V
• Operating temperature range: 0°C ~ 70°C
• Integrated protection features: Depop, Digital Inputs, Short-Circuit Protection, Thermal Protection, Shutdown

Mechanical Parameters (Must Match):

• Package type: 64-TQFP Exposed Pad
• Package dimensions: 14x14mm
• Mounting type: Surface Mount

Compliance Parameters:

• RoHS3 Compliance
• REACH Unaffected status
• ECCN: EAR99
• HTSUS: 8542.33.0001

Parts meeting all these criteria are classified as direct substitutes. Variations in product status (Active vs. Not For New Designs) and moisture sensitivity level do not disqualify substitution eligibility when all electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

The TAS5631BPHD is a direct electrical and mechanical equivalent to the TAS5631PHD. Both devices share identical amplifier specifications, output power ratings, supply voltage requirements, package geometry, and integrated protection features.

Key Differentiation Factors:

Product Status: The TAS5631BPHD carries an "Active" product status, indicating ongoing manufacturer support and availability. The TAS5631PHD is designated "Not For New Designs," reflecting its transition to end-of-life status. For applications requiring long-term supply assurance and manufacturer support, the TAS5631BPHD is the preferred selection.

Moisture Sensitivity Level (MSL): The TAS5631BPHD specifies MSL 4 (72-hour floor life), compared to the TAS5631PHD's MSL 5A (24-hour floor life). The improved moisture sensitivity rating of the TAS5631BPHD provides extended handling and storage flexibility in manufacturing environments.

Compliance and Certifications: Both parts maintain identical RoHS3 compliance, REACH unaffected status, ECCN classification (EAR99), and HTSUS coding (8542.33.0001), ensuring regulatory equivalence for supply chain and export documentation purposes.

PCB Layout and Thermal Considerations: Identical package specifications (64-TQFP Exposed Pad, 14x14mm) ensure direct footprint compatibility. No PCB redesign is required for substitution. Thermal management characteristics remain consistent between both devices.

Frequently Asked Questions (FAQ)

Q: Can the TAS5631BPHD be used as a direct replacement for the TAS5631PHD in existing designs?

A: Yes. The TAS5631BPHD is electrically and mechanically equivalent to the TAS5631PHD. All output power specifications, supply voltage ranges, operating temperature limits, integrated protection features, and package dimensions are identical. Direct substitution on existing PCBs is supported without design modifications.

Q: What is the significance of the "Not For New Designs" status on the TAS5631PHD?

A: This designation indicates that Texas Instruments has concluded active development and optimization of the TAS5631PHD. The device remains available for existing production support but is not recommended for new product development. The TAS5631BPHD, with its "Active" status, is the recommended path forward for sustained supply and manufacturer support.

Q: Are there differences in thermal performance between the TAS5631PHD and TAS5631BPHD?

A: No thermal performance differences are specified in the provided parameters. Both devices utilize identical 64-TQFP Exposed Pad packaging with the same thermal interface characteristics. Thermal management design considerations remain unchanged between the two parts.

Q: What does the MSL rating difference mean for manufacturing and storage?

A: The TAS5631BPHD specifies MSL 4 (72-hour floor life), while the TAS5631PHD specifies MSL 5A (24-hour floor life). MSL 4 provides a longer allowable exposure window to moisture before component baking is required. The TAS5631BPHD offers improved handling flexibility in manufacturing environments with extended floor life before reflow soldering.

Q: Are the digital input specifications identical between both parts?

A: Yes. Both the TAS5631PHD and TAS5631BPHD include Digital Inputs as an integrated feature. No differences in digital interface specifications are provided in the parameter set.

Q: Can the TAS5631BPHD handle the same output power levels as the TAS5631PHD?

A: Yes. Both devices deliver identical maximum output power: 600W at 2Ω (mono configuration) and 300W per channel at 4Ω (stereo configuration). Supply voltage range (25V ~ 52.5V) and operating temperature range (0°C ~ 70°C) are also identical.

Q: Are there any PCB layout changes required when substituting the TAS5631BPHD for the TAS5631PHD?

A: No. Both devices use the 64-TQFP Exposed Pad package with 14x14mm dimensions. PCB footprints are identical, and no layout modifications are necessary for direct substitution.

Q: What is the base product number for both parts?

A: Both the TAS5631PHD and TAS5631BPHD share the base product number TAS5631. The suffix designations (PHD and BPHD) indicate specific product variants within the same base family.