TDA7385 Equivalent & Substitute Parts

Part Overview

The TDA7385 is a linear amplifier integrated circuit manufactured by STMicroelectronics, designed as a 4-channel (quad) Class AB amplifier with 37W output power per channel at 4Ω load impedance. The device operates across a supply voltage range of 8V to 18V and includes integrated protection features including mute, short-circuit protection, thermal protection, and standby functionality. The TDA7385 is classified as obsolete, necessitating identification of equivalent and substitute components for new designs and production applications. Active alternatives with identical or enhanced electrical characteristics are available from the same manufacturer.

Substiute Parts

TDA7385

STMicroelectronicsIn Stock: 16705TDA7385 Datasheet

Current PartRFQ

E-TDA7385

STMicroelectronicsIn Stock: 30223E-TDA7385 Datasheet

DirectRFQ

TDA7388

STMicroelectronicsIn Stock: 39215TDA7388 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TDA7385 amplifier IC is determined by strict alignment of electrical and mechanical parameters. The critical parameters governing substitution are:

Electrical Compatibility Parameters:

• Output configuration: 4-Channel (Quad) topology
• Amplifier class: Class AB operation
• Supply voltage range: 8V to 18V
• Protection features: Mute, short-circuit protection, thermal protection, and standby capability
• Package type: 25-Flexiwatt (Formed Leads) with vertical orientation

Mechanical Compatibility Parameters:

• Mounting type: Through Hole
• Physical package: 25-Flexiwatt (Vertical)

Substitute parts are classified into two categories:

Direct Equivalent: Parts with identical electrical specifications and output power ratings, differing only in product status or packaging format.

Similar Alternative: Parts with the same core architecture, supply voltage range, protection features, and package type, but with enhanced output power specifications.

Parameter Comparison

Engineering Selection Recommendations

E-TDA7385 Selection Criteria:

The E-TDA7385 is the direct functional equivalent of the TDA7385, maintaining identical electrical specifications including 37W per channel output power at 4Ω load and full feature parity. The E-TDA7385 is classified as active product status, ensuring continued availability and supply chain reliability. This part carries ROHS3 compliance certification, meeting modern regulatory requirements for new designs. The E-TDA7385 includes automotive-grade qualification, providing enhanced reliability assurance for demanding applications. Selection of the E-TDA7385 is appropriate for direct replacement in applications where the original TDA7385 specifications are required and regulatory compliance is mandatory.

TDA7388 Selection Criteria:

The TDA7388 is a similar alternative amplifier IC with enhanced output power specification of 41W per channel at 4Ω load, compared to the 37W specification of the TDA7385. All other electrical parameters remain identical, including supply voltage range, protection features, and quad-channel architecture. The TDA7388 maintains active product status and ROHS3 compliance. Selection of the TDA7388 is appropriate for applications where increased output power capability is beneficial and the enhanced specifications do not conflict with circuit design constraints. The TDA7388 is pin-compatible and package-compatible with the TDA7385, enabling direct substitution in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the E-TDA7385 be used as a direct replacement for the TDA7385?

A: Yes. The E-TDA7385 maintains identical electrical specifications, including 37W per channel output power, supply voltage range of 8V to 18V, quad-channel configuration, and all protection features. Both parts use the 25-Flexiwatt (Vertical) package with through-hole mounting. The primary differences are product status (active versus obsolete) and regulatory compliance (ROHS3 compliant versus non-compliant).

Q: What is the difference between the TDA7385 and TDA7388?

A: The TDA7388 provides enhanced output power of 41W per channel at 4Ω load, compared to 37W for the TDA7385. All other specifications are identical: quad-channel Class AB architecture, 8V to 18V supply voltage range, identical protection features, and 25-Flexiwatt (Vertical) package configuration. Both are active products with ROHS3 compliance.

Q: Are the TDA7385, E-TDA7385, and TDA7388 pin-compatible?

A: Yes. All three parts use the 25-Flexiwatt (Vertical) package with identical pin configuration and through-hole mounting. They are mechanically and electrically compatible for PCB layout purposes.

Q: Why is the TDA7385 classified as obsolete?

A: The TDA7385 is no longer in active production. The E-TDA7385 and TDA7388 are the active alternatives available from STMicroelectronics for new designs and production applications.

Q: Does the E-TDA7385 have automotive qualification?

A: Yes. The E-TDA7385 carries automotive-grade qualification, meeting enhanced reliability and performance standards for automotive applications.

Q: What is the difference in packaging between TDA7385 and E-TDA7385?

A: The TDA7385 is supplied in bulk packaging format, while the E-TDA7385 is supplied in tube packaging. Both use the identical 25-Flexiwatt (Vertical) component package.

Q: Can the TDA7388 be used in applications designed for the TDA7385?

A: Yes. The TDA7388 is a pin-compatible and package-compatible substitute with enhanced output power capability. The increased power specification of 41W per channel does not create incompatibility with TDA7385-based designs. Circuit performance will benefit from the additional power headroom.

Q: What is the supply voltage range for all three parts?

A: All three parts operate across an identical supply voltage range of 8V to 18V, ensuring compatibility in power supply designs.

Q: Are all three parts RoHS compliant?

A: The TDA7385 is RoHS non-compliant. Both the E-TDA7385 and TDA7388 are ROHS3 compliant, meeting current regulatory requirements for electronic components.