SM6T22AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SM6T22AHM3_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 features a 22V nominal reverse standoff voltage with a 30.6V maximum clamping voltage and 20A peak pulse current capability in a DO-214AA (SMB) package.

The SM6T22AHM3_A/I carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this specific voltage protection profile.

Substiute Parts

SM6T22AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 814SM6T22AHM3_A/I Datasheet

Current PartRFQ

SM6T22AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 719SM6T22AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM6T22AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 18.8V
• Voltage - Breakdown (Min): 20.9V
• Voltage - Clamping (Max) @ Ipp: 30.6V
• Current - Peak Pulse (10/1000µs): 20A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SM6T22AHM3_B/I meets all electrical and mechanical requirements for direct substitution. This part maintains identical voltage protection characteristics, peak pulse current handling, and thermal performance while offering Active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SM6T22AHM3_B/I is the direct equivalent substitute for the SM6T22AHM3_A/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications, thermal performance, and automotive-grade qualifications (AEC-Q101).

The primary distinction is product status: SM6T22AHM3_A/I is Obsolete, while SM6T22AHM3_B/I is Active. Selection of the Active part ensures long-term supply chain continuity and access to current manufacturing batches. Both parts comply with ROHS3 and REACH requirements.

Frequently Asked Questions (FAQ)

Q: Can SM6T22AHM3_B/I be used as a direct replacement for SM6T22AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: 18.8V reverse standoff voltage, 30.6V clamping voltage, 20A peak pulse current, 600W peak pulse power, and DO-214AA (SMB) package. They share identical automotive qualification (AEC-Q101) and operating temperature range (-65°C ~ 150°C).

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

A: The SM6T22AHM3_B/I is the Active production equivalent of the Obsolete SM6T22AHM3_A/I. The suffix designation (_B/I vs. _A/I) indicates a manufacturing revision. Electrical and mechanical specifications remain unchanged.

Q: Are there any package or mounting differences?

A: No. Both parts use the DO-214AA (SMB) surface mount package with identical pinout and land pattern compatibility.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both SM6T22AHM3_A/I and SM6T22AHM3_B/I are Automotive grade and qualified to AEC-Q101 standard. Both are ROHS3 compliant and REACH unaffected.

Q: Which part should be selected for new designs?

A: SM6T22AHM3_B/I should be selected for new designs due to its Active product status, ensuring availability and access to current manufacturing processes.