TPA3140D2PWPR Equivalent & Substitute Parts

Part Overview

The TPA3140D2PWPR is an active Class D stereo amplifier integrated circuit manufactured by Texas Instruments. This device delivers 10W per channel at 8Ω load across two channels in a 28-HTSSOP surface mount package. The part is currently in active production status with 35,200 units in stock inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges. The TPA3140D2PWPR operates across a 4.5V to 14.4V supply voltage range with integrated depop, short-circuit, and thermal protection features. Alternative models may be required due to supply constraints, lead time considerations, or specific application requirements.

Substiute Parts

TPA3140D2PWPR

Texas InstrumentsIn Stock: 35244TPA3140D2PWPR Datasheet

Current PartRFQ

RT9118GQW

Richtek USA Inc.In Stock: 1821RT9118GQW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPA3140D2PWPR is determined by the following critical parameters:

Electrical Performance Criteria:

• Amplifier topology: Class D configuration
• Channel configuration: 2-Channel (Stereo) output
• Output power rating: 10W per channel at 8Ω load
• Operating temperature range: -40°C to 85°C

Mechanical Compatibility Criteria:

• Surface mount technology
• Package footprint compatibility
• Moisture sensitivity level: MSL 3 or lower

Regulatory & Compliance Criteria:

• RoHS3 compliance status
• REACH compliance status
• ECCN and HTSUS classification alignment

The RT9118GQW meets the electrical performance and regulatory requirements. However, the package format differs (28-WQFN versus 28-HTSSOP), which requires PCB layout evaluation. The supply voltage range differs between the two devices, necessitating circuit design verification.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Supply Voltage Range

The TPA3140D2PWPR operates from 4.5V minimum supply voltage, while the RT9118GQW requires a minimum of 8V. Applications utilizing supply voltages between 4.5V and 8V cannot use the RT9118GQW as a direct substitute without circuit redesign.

Secondary Consideration: Package Footprint

The TPA3140D2PWPR uses a 28-PowerTSSOP package, while the RT9118GQW uses a 28-WQFN (4x5) package. These packages have different physical dimensions and pin layouts. PCB redesign is required for mechanical substitution.

Regulatory Compliance

Both devices maintain ROHS3 compliance, REACH unaffected status, and identical ECCN/HTSUS classifications. Both devices carry MSL 3 moisture sensitivity ratings with 168-hour floor life specifications.

Production Status

Both devices are in active production. The TPA3140D2PWPR has significantly higher inventory availability (35,200 units) compared to the RT9118GQW (1,759 units).

Frequently Asked Questions (FAQ)

Q: Can the RT9118GQW replace the TPA3140D2PWPR without PCB modification?

A: No. The RT9118GQW uses a 28-WQFN package while the TPA3140D2PWPR uses a 28-PowerTSSOP package. These packages have different footprints, pin spacing, and thermal characteristics. PCB layout redesign is required.

Q: What is the minimum supply voltage difference between these devices?

A: The TPA3140D2PWPR operates from 4.5V minimum, while the RT9118GQW requires 8V minimum. Applications operating below 8V cannot use the RT9118GQW.

Q: Are both devices RoHS compliant?

A: Yes. Both the TPA3140D2PWPR and RT9118GQW are ROHS3 compliant and REACH unaffected.

Q: What are the moisture handling requirements for these devices?

A: Both devices carry MSL 3 ratings with 168-hour floor life specifications. Storage and handling procedures must comply with IPC-A-610 standards for MSL 3 components.

Q: Do both devices provide thermal protection?

A: The TPA3140D2PWPR includes integrated thermal protection. The RT9118GQW specifications provided do not explicitly list thermal protection features in the available data.

Q: What is the output power equivalence between these devices?

A: Both devices deliver 10W per channel at 8Ω load in stereo configuration. Output power specifications are equivalent.

Q: Are there differences in protection features?

A: The TPA3140D2PWPR includes depop, short-circuit, and thermal protection. The RT9118GQW includes short-circuit protection. Depop and thermal protection feature availability for the RT9118GQW requires verification against complete device documentation.