TPA0142PWPR Equivalent & Substitute Parts

Part Overview

The TPA0142PWPR is a Class AB stereo amplifier integrated circuit manufactured by Texas Instruments, designed for 2-channel stereo headphone applications. This device delivers 2.8W per channel at 3Ohm load impedance and operates across a 4.5V to 5.5V supply voltage range. The component is classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements. Substitute parts must maintain compatibility with the core amplification topology, output configuration, and thermal management characteristics while accommodating variations in packaging and electrical specifications.

Substiute Parts

TPA0142PWPR

Texas InstrumentsIn Stock: 1463TPA0142PWPR Datasheet

Current PartRFQ

TPA6021A4N

Texas InstrumentsIn Stock: 4173TPA6021A4N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPA0142PWPR is determined by the following critical parameters:

Functional Requirements:

• Amplifier topology: Class AB configuration
• Output channels: 2-Channel stereo with headphone drive capability
• Supply voltage compatibility: Overlap within 4.5V to 5.5V range
• Operating temperature range: -40°C to 85°C minimum

Compliance Requirements:

• RoHS3 compliance status
• REACH compliance status
• Regulatory classification (ECCN, HTSUS codes)

Acceptable Variations:

• Output power per channel (may differ based on load impedance specification)
• Mounting technology (Surface Mount or Through Hole)
• Package form factor (different pin counts and physical dimensions permitted)
• Feature set (subset of original features acceptable; additional features permitted)
• Moisture Sensitivity Level (MSL classification may vary)

The TPA6021A4N qualifies as a substitute based on matching Class AB topology, 2-channel stereo output configuration, overlapping supply voltage range, identical operating temperature specification, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

TPA6021A4N Substitution Considerations:

The TPA6021A4N serves as a functional equivalent for the obsolete TPA0142PWPR in stereo headphone amplifier applications. Both devices maintain identical Class AB amplification topology, 2-channel stereo output configuration, and operating temperature specifications. Supply voltage ranges overlap substantially, with the TPA6021A4N supporting a marginally lower minimum threshold (4V versus 4.5V).

Output power specifications differ based on load impedance: the TPA0142PWPR delivers 2.8W per channel at 3Ohm, while the TPA6021A4N delivers 2W per channel at 4Ohm. Design implementations must verify that the lower power output at the specified load impedance meets application requirements.

The primary architectural difference involves mounting technology: the TPA0142PWPR utilizes surface mount (24-HTSSOP), while the TPA6021A4N employs through-hole technology (20-PDIP). This distinction requires PCB redesign and assembly process modification.

Both components maintain equivalent regulatory compliance: ROHS3 certification, REACH unaffected status, and identical ECCN/HTSUS classifications. The TPA6021A4N carries Last Time Buy status, indicating limited future availability.

Frequently Asked Questions (FAQ)

Q: Can the TPA6021A4N directly replace the TPA0142PWPR without PCB modification?

A: No. The TPA0142PWPR uses 24-HTSSOP surface mount packaging, while the TPA6021A4N uses 20-PDIP through-hole packaging. PCB layout redesign is required to accommodate the different pin configuration and mounting technology.

Q: What is the impact of the lower output power specification in the TPA6021A4N?

A: The TPA6021A4N delivers 2W per channel at 4Ohm load impedance, compared to 2.8W per channel at 3Ohm for the TPA0142PWPR. Applications requiring maximum headphone drive capability at lower impedance loads must evaluate whether the reduced power output remains acceptable for the intended use case.

Q: Are the supply voltage ranges compatible between these devices?

A: The voltage ranges overlap substantially. The TPA0142PWPR operates at 4.5V to 5.5V, while the TPA6021A4N operates at 4V to 5.5V. Designs operating at 4.0V to 4.4V can use only the TPA6021A4N. Designs operating at 4.5V to 5.5V can use either device.

Q: Do both devices support the same feature set?

A: The TPA0142PWPR includes Depop, Differential Inputs, Input Multiplexer, Mute, Shutdown, Thermal Protection, and Volume Control. The TPA6021A4N includes Differential Inputs, Mute, Shutdown, Thermal Protection, and Volume Control. The TPA6021A4N lacks Depop and Input Multiplexer functionality. Applications dependent on these features require alternative solutions.

Q: What is the significance of the product status difference?

A: The TPA0142PWPR is classified as Obsolete, indicating end-of-life status with no further manufacturing. The TPA6021A4N is classified as Last Time Buy, indicating limited remaining inventory before discontinuation. Both devices face availability constraints; long-term production planning should identify additional alternatives.

Q: Are moisture sensitivity levels equivalent?

A: The TPA0142PWPR carries MSL 2 (1 Year) classification, indicating moisture sensitivity requiring controlled storage and handling. The TPA6021A4N is classified as Not Applicable, indicating no moisture sensitivity requirement. This represents an advantage for the TPA6021A4N in storage and assembly environments.

Q: Do both devices maintain identical regulatory compliance?

A: Yes. Both devices are ROHS3 compliant, REACH unaffected, and classified under identical ECCN (EAR99) and HTSUS (8542.33.0001) codes. Regulatory requirements do not differentiate between these components.