P6SMB33AHE3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB33AHE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-214AA (SMB) package. This component provides transient overvoltage protection with a 28.2V reverse standoff voltage and 45.7V maximum clamping voltage at peak pulse current of 13.1A.

The P6SMB33AHE3_A/I carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring this specific voltage suppression performance.

Substiute Parts

P6SMB33AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 848P6SMB33AHE3_A/I Datasheet

Current PartRFQ

P6SMB33AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 864P6SMB33AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMB33AHE3_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)
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The P6SMB33AHE3_B/I is classified as a manufacturer-recommended substitute. This part maintains identical electrical performance specifications and mechanical compatibility while differing in packaging configuration (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P6SMB33AHE3_B/I is the appropriate substitute for the obsolete P6SMB33AHE3_A/I. Both parts are manufactured by Vishay and share identical electrical and mechanical specifications, including voltage ratings, current handling, thermal operating range, and automotive-grade qualification to AEC-Q101.

The primary distinction is product status: P6SMB33AHE3_A/I is Obsolete, while P6SMB33AHE3_B/I maintains Active status with current manufacturing support. The P6SMB33AHE3_B/I is supplied in Tape & Reel packaging, which is standard for high-volume production environments.

Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for automotive and industrial applications. The electrical performance, thermal characteristics, and reliability qualifications are identical, making the P6SMB33AHE3_B/I a direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can P6SMB33AHE3_B/I be used as a direct replacement for P6SMB33AHE3_A/I in existing designs?

A: Yes. The P6SMB33AHE3_B/I is electrically and mechanically identical to the P6SMB33AHE3_A/I. Both parts feature the same 28.2V reverse standoff voltage, 45.7V clamping voltage, 13.1A peak pulse current, and 600W peak pulse power rating. The DO-214AA (SMB) package and surface mount configuration are identical. No circuit redesign is required.

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

A: The primary differences are packaging format and product status. P6SMB33AHE3_A/I is supplied in bulk packaging and carries Obsolete status. P6SMB33AHE3_B/I is supplied in Tape & Reel (TR) packaging and maintains Active product status with ongoing manufacturing support.

Q: Are there any thermal or electrical performance differences?

A: No. Both parts operate across the identical temperature range of -65°C to 150°C (TJ) and maintain identical electrical specifications. Automotive-grade qualification to AEC-Q101 is equivalent for both parts.

Q: Is the DO-214AA (SMB) package compatible with existing PCB layouts?

A: Yes. Both parts use the DO-214AA (SMB) surface mount package. PCB footprints, reflow profiles, and assembly processes remain unchanged. The Tape & Reel packaging of the P6SMB33AHE3_B/I is compatible with standard pick-and-place equipment.

Q: Do both parts meet the same compliance standards?

A: Yes. Both P6SMB33AHE3_A/I and P6SMB33AHE3_B/I are ROHS3 compliant, REACH Unaffected, and classified under ECCN EAR99. Regulatory and environmental compliance is equivalent.