SM6T33CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SM6T33CAHM3_A/I is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for transient overvoltage protection in surface mount applications. This component features a 28.2V reverse standoff voltage with a 45.7V maximum clamping voltage and 13.1A peak pulse current capability in a DO-214AA (SMB) package.

The SM6T33CAHM3_A/I carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this TVS diode specification.

Substiute Parts

SM6T33CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1095SM6T33CAHM3_A/I Datasheet

Current PartRFQ

SM6T33CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1250SM6T33CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM6T33CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 28.2V
• Voltage - Breakdown (Min): 31.4V
• Voltage - Clamping (Max) @ Ipp: 45.7V
• Current - Peak Pulse (10/1000µs): 13.1A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SM6T33CAHM3_B/I qualifies as a direct substitute, maintaining identical electrical specifications and package configuration while offering Active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SM6T33CAHM3_B/I is the manufacturer-recommended substitute for the obsolete SM6T33CAHM3_A/I. Both parts maintain identical electrical and thermal specifications, automotive-grade qualification (AEC-Q101), and ROHS3 compliance. The primary distinction is product status: SM6T33CAHM3_B/I is Active and available in Tape & Reel packaging, providing superior supply chain continuity and manufacturing efficiency compared to the Obsolete SM6T33CAHM3_A/I.

For new designs or production transitions, SM6T33CAHM3_B/I is the appropriate selection. For existing inventory management or legacy system support, both parts deliver equivalent performance within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can SM6T33CAHM3_B/I be used as a direct replacement for SM6T33CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: 28.2V reverse standoff voltage, 45.7V clamping voltage, 13.1A peak pulse current, 600W peak pulse power, DO-214AA package, and AEC-Q101 automotive qualification. The substitute is functionally interchangeable.

Q: What is the primary reason to transition from SM6T33CAHM3_A/I to SM6T33CAHM3_B/I?

A: The SM6T33CAHM3_A/I is Obsolete, while SM6T33CAHM3_B/I maintains Active product status. This ensures long-term supply availability, manufacturing support, and compliance with current industry standards.

Q: Are there packaging differences between these parts?

A: Yes. SM6T33CAHM3_A/I is supplied in bulk packaging, while SM6T33CAHM3_B/I is supplied in Tape & Reel (TR) format. Both use the same DO-214AA (SMB) component package, so PCB footprint and mounting procedures remain unchanged.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SM6T33CAHM3_A/I and SM6T33CAHM3_B/I are Automotive-grade components with AEC-Q101 qualification and ROHS3 compliance, suitable for automotive and industrial applications requiring transient overvoltage protection.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching: Voltage - Reverse Standoff (28.2V), Voltage - Breakdown (31.4V), Voltage - Clamping (45.7V), Current - Peak Pulse (13.1A), Power - Peak Pulse (600W), and package configuration (DO-214AA, SMB). All parameters must align for functional equivalence.