TPSMP15AHM3/84A Equivalent & Substitute Parts

Part Overview

The TPSMP15AHM3/84A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for transient overvoltage protection in automotive and industrial applications, featuring a 12.8V reverse standoff voltage and 21.2V maximum clamping voltage. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and procurement planning.

Substiute Parts

TPSMP15AHM3/84A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1227TPSMP15AHM3/84A Datasheet

Current PartRFQ

TPSMP15AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 1131TPSMP15AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPSMP15AHM3/84A is determined by strict equivalence across the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 12.8V (Typ), breakdown voltage minimum of 14.3V, and clamping voltage maximum of 21.2V @ Ipp
• Current Handling: Peak pulse current of 18.9A (10/1000µs pulse)
• Power Dissipation: Peak pulse power of 400W
• Package: DO-220AA surface mount package
• Electrical Configuration: Single unidirectional channel (Zener type)
• Thermal Range: Operating temperature from -65°C to 185°C (TJ)
• Compliance: Automotive grade with AEC-Q101 qualification, ROHS3 compliance, and MSL 1 rating

The substitute part TPSMP15AHM3_A/H meets all these criteria and is derived from the same base product number (TPSMP15) within the PAR® and eSMP® series.

Parameter Comparison

Engineering Selection Recommendations

The TPSMP15AHM3_A/H is a direct electrical and mechanical equivalent to the TPSMP15AHM3/84A. Both components share identical electrical specifications, thermal performance, and compliance certifications. The primary distinction is product status: the main part is obsolete while the substitute is active, ensuring continued availability and manufacturing support.

The substitute part maintains full automotive-grade qualification (AEC-Q101) and regulatory compliance (ROHS3, REACH Unaffected). The packaging difference—Tape & Reel format for the substitute versus bulk for the main part—does not affect electrical performance or circuit functionality. This packaging variation reflects standard industry practice for active production components.

For new designs or system refreshes, the TPSMP15AHM3_A/H is the appropriate selection. For legacy system support where the original part is no longer available, this substitute provides complete functional equivalence without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can TPSMP15AHM3_A/H be used as a direct replacement for TPSMP15AHM3/84A?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: voltage ratings, current handling, power dissipation, operating temperature range, package type, and automotive qualifications. The substitute is suitable for direct board-level replacement.

Q: What is the difference between the two part numbers?

A: The TPSMP15AHM3_A/H differs only in packaging format (Tape & Reel) and product status (Active). The electrical and thermal characteristics are identical. The suffix designation reflects Vishay's internal product lifecycle management.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical certifications: AEC-Q101 automotive qualification, ROHS3 compliance, REACH Unaffected status, and MSL 1 moisture sensitivity rating. They are fully interchangeable from a regulatory standpoint.

Q: Why is the original part marked as obsolete?

A: Product obsolescence reflects Vishay's manufacturing lifecycle decisions. The active substitute (TPSMP15AHM3_A/H) ensures continued availability of this TVS diode specification within the PAR® and eSMP® series.

Q: Does the Tape & Reel packaging affect circuit performance?

A: No. Tape & Reel is a standard packaging format for surface mount components and does not alter electrical performance, thermal characteristics, or reliability. It is the standard delivery method for active production components.

Q: What applications are these TVS diodes suitable for?

A: These unidirectional TVS diodes are designed for transient overvoltage protection in automotive and industrial circuits. The 12.8V standoff voltage and 21.2V clamping voltage make them suitable for protecting 12V automotive systems and similar voltage-rated circuits.

Q: Can these parts be used in non-automotive applications?

A: Yes. While qualified to automotive standards (AEC-Q101), these components can be used in industrial and consumer applications requiring equivalent transient voltage suppression specifications. The automotive qualification ensures higher reliability margins.