SMBJ3V3HM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ3V3HM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component in DO-214AA (SMB) package is designed for transient overvoltage protection with a 3.3V reverse standoff voltage and 7.3V maximum clamping voltage at peak pulse current of 50A.

The SMBJ3V3HM3_A/I carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this specific voltage suppression performance.

Substiute Parts

SMBJ3V3HM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1023SMBJ3V3HM3_A/I Datasheet

Current PartRFQ

SMBJ3V3HM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 923SMBJ3V3HM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ3V3HM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 3.3V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 7.3V (exact match required)
• Current - Peak Pulse: 50A (exact match required)
• Power - Peak Pulse: 600W (exact match required)
• Package / Case: DO-214AA, SMB (exact match required)
• Unidirectional Channels: 1 (exact match required)
• Type: Zener (exact match required)

The SMBJ3V3HM3_B/I qualifies as a direct substitute, maintaining identical electrical specifications and mechanical compatibility while offering Active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ3V3HM3_B/I is the direct substitute for the obsolete SMBJ3V3HM3_A/I. Both components maintain identical electrical performance specifications and mechanical compatibility. The primary distinction is product status: the SMBJ3V3HM3_B/I carries Active status with improved inventory availability (898 Pcs in stock versus 989 Pcs for the obsolete variant).

Both parts satisfy automotive-grade requirements with AEC-Q101 qualification and ROHS3 compliance, ensuring regulatory and quality standards are maintained in the substitution. The packaging format (Tape & Reel for the substitute) is standard for production environments and does not affect functional performance.

Frequently Asked Questions (FAQ)

Q: Can SMBJ3V3HM3_B/I be used as a direct replacement for SMBJ3V3HM3_A/I?

A: Yes. The SMBJ3V3HM3_B/I is electrically and mechanically equivalent. All critical parameters—reverse standoff voltage (3.3V), clamping voltage (7.3V), peak pulse current (50A), and power dissipation (600W)—are identical. The DO-214AA (SMB) package footprint is unchanged, enabling direct PCB substitution.

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

A: The primary difference is product lifecycle status. SMBJ3V3HM3_A/I is Obsolete, while SMBJ3V3HM3_B/I is Active. The suffix designations (_A/I versus _B/I) indicate manufacturing revisions within the same electrical specification family. Both maintain identical performance characteristics and automotive qualification.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical certifications: AEC-Q101 automotive qualification, ROHS3 compliance, and REACH Unaffected status. Regulatory and quality requirements are maintained in the substitution.

Q: Does the Tape & Reel packaging affect component performance?

A: No. Tape & Reel is a standard production packaging format that does not alter electrical or mechanical properties. The component itself remains identical; only the delivery and handling format differs from bulk packaging.

Q: What parameters must remain constant for substitution?

A: Substitution requires exact equivalence in: reverse standoff voltage (3.3V), breakdown voltage (4.1V minimum), clamping voltage (7.3V maximum), peak pulse current (50A), power dissipation (600W), package type (DO-214AA/SMB), and unidirectional channel configuration (1 channel). Any deviation in these parameters disqualifies a part as a direct substitute.