Equivalent & Substitute Parts Reference for SM6T33AHM3_A/I

Part Overview

The Vishay General Semiconductor SM6T33AHM3_A/I is a surface-mount Transient Voltage Suppressor (TVS) diode, configured with a 45.7V clamp voltage, 13.1A peak pulse current, and housed in a DO-214AA (SMB) package. It is designed for automotive applications and is AEC-Q101 qualified. This part is currently listed as obsolete, necessitating the identification of substitute models to maintain design continuity, meet automotive grade requirements, and ensure availability in ongoing manufacturing and repair processes.

Substiute Parts

SM6T33AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 954SM6T33AHM3_A/I Datasheet

Current PartRFQ

SM6T33AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 723SM6T33AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is strictly governed by the following parameters: electrical performance (reverse standoff, breakdown, clamping voltage, peak pulse current and power), mounting and package specifications, number and type of channels, automotive grade and qualification, and environmental and compliance statuses. Substitutes must exactly match these parameters to be considered direct replacements. Product status is used to prefer active components.

Parameter Comparison

Engineering Selection Recommendations

The primary factor for substitute selection is the product lifecycle status. SM6T33AHM3_A/I is obsolete, while SM6T33AHM3_B/I is active and maintains identical electrical, mechanical, automotive grade, qualification, RoHS, and REACH conformity. Selection should be based on continuity of regulatory certification, automotive grade, package compatibility, and electrical equivalence.

Frequently Asked Questions (FAQ)

Q: What parameters must match when substituting SM6T33AHM3_A/I?
A: Substitute TVS diodes must match reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, peak pulse power, channel count and type, automotive qualification, mounting type, package/case, and compliance status.

Q: Is the SM6T33AHM3_B/I a direct replacement for SM6T33AHM3_A/I?
A: Yes, SM6T33AHM3_B/I is a direct substitute due to identical electrical and mechanical specifications and automotive grade with AEC-Q101 qualification.

Q: Are there any compliance differences between these parts?
A: Both parts are ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory compatibility.

Q: Do the package and mounting types require layout changes?
A: No. Both use DO-214AA (SMB) surface-mount packaging, supporting identical PCB layouts.

Q: Why is the product lifecycle important in component selection?
A: Selection of active components ensures availability and supply continuity, which is critical when the original part is obsolete.