TPSMP9.1HM3/84A Equivalent & Substitute Parts

Part Overview

The TPSMP9.1HM3/84A is a unidirectional Zener-type transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. Designed for surface mount applications in the DO-220AA (SMP) package, this component provides transient overvoltage protection with a 13.8V clamping voltage and 21.7A peak pulse current capability. The device is qualified to AEC-Q101 automotive standards and operates across the temperature range of -65°C to 185°C.

This part is currently listed as obsolete. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring comparable transient voltage suppression performance.

Substiute Parts

TPSMP9.1HM3/84A

Vishay General Semiconductor - Diodes DivisionIn Stock: 756TPSMP9.1HM3/84A Datasheet

Current PartRFQ

TPSMP9.1AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 958TPSMP9.1AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPSMP9.1HM3/84A is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Zener diode type with unidirectional channel configuration
• Reverse standoff voltage within acceptable tolerance of 7.37V
• Breakdown voltage minimum within acceptable tolerance of 8.19V
• Clamping voltage maximum within acceptable tolerance of 13.8V
• Peak pulse current capability at or above 21.7A
• Peak pulse power rating at or above 300W

Mechanical & Environmental Compatibility Criteria:

• DO-220AA (SMP) surface mount package
• Operating temperature range of -65°C to 185°C
• Automotive grade qualification (AEC-Q101)
• ROHS3 compliance
• MSL rating of 1 or better

The substitute part TPSMP9.1AHM3_A/H meets all substitution criteria while offering improved electrical performance and active product status.

Parameter Comparison

Engineering Selection Recommendations

The TPSMP9.1AHM3_A/H is a direct substitute for the obsolete TPSMP9.1HM3/84A. Both components share identical mechanical compatibility, thermal operating range, automotive qualification status, and regulatory compliance. The substitute part maintains the same base product number (TPSMP9.1) and package configuration.

The substitute part offers enhanced electrical performance: peak pulse current increased from 21.7A to 22.4A, and peak pulse power increased from 300W to 400W. The clamping voltage is slightly lower (13.4V versus 13.8V), and the reverse standoff voltage is slightly higher (7.78V versus 7.37V). These variations remain within the functional tolerance of the TVS diode category and do not compromise circuit protection objectives.

The active product status of TPSMP9.1AHM3_A/H ensures ongoing availability and supply chain support, eliminating obsolescence risk associated with the main part.

Frequently Asked Questions (FAQ)

Q: Can TPSMP9.1AHM3_A/H be used as a direct replacement for TPSMP9.1HM3/84A?

A: Yes. Both parts share identical package configuration (DO-220AA SMP), thermal operating range (-65°C to 185°C), automotive qualification (AEC-Q101), and regulatory compliance (ROHS3). The electrical parameters of the substitute part fall within acceptable substitution tolerances for TVS diode applications.

Q: What are the key differences in electrical performance?

A: The substitute part provides higher peak pulse current (22.4A versus 21.7A) and higher peak pulse power (400W versus 300W). The clamping voltage is marginally lower (13.4V versus 13.8V), and the reverse standoff voltage is marginally higher (7.78V versus 7.37V). These differences represent improved performance characteristics suitable for the same protection application.

Q: Are both parts qualified for automotive applications?

A: Yes. Both TPSMP9.1HM3/84A and TPSMP9.1AHM3_A/H carry automotive grade designation and AEC-Q101 qualification, confirming suitability for automotive circuit protection requirements.

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

A: The main part is listed as obsolete, indicating discontinued manufacturing and limited future availability. The substitute part maintains active product status, ensuring continued supply and manufacturing support. For new designs or long-term production requirements, the active substitute part is the appropriate selection.

Q: Are the packaging and moisture sensitivity specifications identical?

A: Yes. Both parts use DO-220AA (SMP) surface mount packaging with MSL rating of 1 (Unlimited), indicating identical handling and storage requirements.