SM6T150AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SM6T150AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for transient overvoltage protection in surface mount applications. This component operates with a 128V reverse standoff voltage and provides 207V maximum clamping voltage with 2.9A peak pulse current capability in a DO-214AA (SMB) package format.

The SM6T150AHM3_A/I carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this specific electrical and mechanical configuration.

Substiute Parts

SM6T150AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 823SM6T150AHM3_A/I Datasheet

Current PartRFQ

SM6T150AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 884SM6T150AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM6T150AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 128V (Typ), breakdown voltage minimum of 143V, and clamping voltage maximum of 207V @ Ipp
• Current Handling: Peak pulse current of 2.9A (10/1000µs pulse)
• Power Dissipation: Peak pulse power rating of 600W
• Package Configuration: DO-214AA (SMB) surface mount package
• Channel Configuration: Single unidirectional channel
• Electrical Type: Zener-based TVS diode
• Compliance Standards: AEC-Q101 automotive qualification, ROHS3 compliance, and operating temperature range of -65°C to 150°C

Substitute parts must match all electrical parameters and maintain identical package specifications to ensure direct board-level compatibility without design modification.

Parameter Comparison

Engineering Selection Recommendations

The SM6T150AHM3_B/I is the manufacturer-recommended substitute for the obsolete SM6T150AHM3_A/I. Both components are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications across all critical parameters: voltage ratings, current handling, power dissipation, and thermal operating range.

The primary distinction is product status: SM6T150AHM3_A/I is classified as Obsolete, while SM6T150AHM3_B/I maintains Active status with current manufacturing and distribution support. Both components carry AEC-Q101 automotive qualification and ROHS3 compliance certification, confirming suitability for regulated applications.

The packaging format difference (standard versus Tape & Reel) reflects supply chain availability and does not affect electrical performance or board-level compatibility. Selection between these variants should be based on procurement requirements and supply chain logistics rather than technical performance considerations.

Frequently Asked Questions (FAQ)

Q: Can SM6T150AHM3_B/I be used as a direct replacement for SM6T150AHM3_A/I?

A: Yes. Both components are electrically identical across all specified parameters: 128V reverse standoff voltage, 143V minimum breakdown voltage, 207V maximum clamping voltage, 2.9A peak pulse current, and 600W peak pulse power. Both use the DO-214AA (SMB) surface mount package and share identical thermal and compliance specifications. No circuit modification is required.

Q: What is the significance of the Obsolete status for SM6T150AHM3_A/I?

A: Obsolete status indicates that the manufacturer has discontinued production and distribution of this specific part number variant. The SM6T150AHM3_B/I substitute maintains Active status with ongoing manufacturing support, ensuring long-term supply chain availability and design continuity.

Q: Are there differences in packaging that affect board assembly?

A: The SM6T150AHM3_A/I uses standard packaging, while SM6T150AHM3_B/I is supplied in Tape & Reel (TR) format. This distinction affects procurement and handling logistics but does not impact electrical performance, thermal characteristics, or board-level compatibility. Both variants use the identical DO-214AA (SMB) package footprint.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SM6T150AHM3_A/I and SM6T150AHM3_B/I carry AEC-Q101 automotive qualification and are classified as Automotive grade components. Both maintain ROHS3 compliance and operate across the identical temperature range of -65°C to 150°C (TJ).

Q: What parameters must remain constant for substitution eligibility?

A: Substitution requires equivalence across voltage ratings (128V reverse standoff, 143V breakdown minimum, 207V clamping maximum), current specifications (2.9A peak pulse), power rating (600W), package type (DO-214AA SMB), channel configuration (single unidirectional), and thermal operating range (-65°C to 150°C). Any deviation from these parameters disqualifies a component as a direct substitute.