P6SMB33AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB33AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This component features a 28.2V reverse standoff voltage with 45.7V maximum clamping voltage and 13.1A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently listed as obsolete, making identification of active equivalent substitutes essential for ongoing design support and procurement.

Substiute Parts

P6SMB33AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 715P6SMB33AHM3_A/I Datasheet

Current PartRFQ

P6SMB33AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 950P6SMB33AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB33AHM3_A/I is determined by strict equivalence across the following electrical and mechanical 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)
• Type: Zener, Unidirectional
• Operating Temperature Range: -65°C to 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The P6SMB33AHM3_B/I meets all these criteria and is classified as an active manufacturer-recommended substitute. The primary distinction is product status and packaging configuration (Tape & Reel vs. bulk), with no deviation in electrical performance or thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB33AHM3_B/I is the direct active equivalent for the obsolete P6SMB33AHM3_A/I. Both components share identical electrical specifications, thermal operating range, automotive grade classification, and AEC-Q101 qualification. The substitute maintains full compliance with RoHS3 and REACH requirements.

Selection of the P6SMB33AHM3_B/I is appropriate for all applications previously served by the P6SMB33AHM3_A/I. The difference in packaging format (Tape & Reel for the substitute versus bulk for the main part) does not affect electrical performance or functional compatibility. Procurement should transition to the active part number to ensure long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB33AHM3_B/I be used as a direct replacement for the P6SMB33AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The P6SMB33AHM3_B/I is the manufacturer-recommended active substitute for the obsolete P6SMB33AHM3_A/I.

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

A: The primary difference is product status and packaging configuration. The P6SMB33AHM3_A/I is obsolete, while the P6SMB33AHM3_B/I is active. The substitute is supplied in Tape & Reel packaging, whereas the main part was supplied in bulk. Electrical and thermal characteristics are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical compliance status: ROHS3 Compliant, REACH Unaffected, AEC-Q101 qualified, and automotive grade. Regulatory and qualification requirements are fully met by the substitute.

Q: Is the DO-214AA (SMB) package identical between both parts?

A: Yes. Both components use the same DO-214AA (SMB) surface mount package. PCB footprint and mounting requirements are identical, requiring no design changes.

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

A: Substitution is based on matching: reverse standoff voltage (28.2V), breakdown voltage (31.4V), clamping voltage (45.7V), peak pulse current (13.1A), and peak pulse power (600W). The P6SMB33AHM3_B/I meets all these specifications exactly.