P6SMB91CAHE3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB91CAHE3_A/I is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications in the DO-214AA (SMB) package and provides 125V clamping protection with 4.8A peak pulse current capability. The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

P6SMB91CAHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 831P6SMB91CAHE3_A/I Datasheet

Current PartRFQ

P6SMB91CAHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 975P6SMB91CAHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB91CAHE3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 77.8V
• Voltage - Breakdown (Min): 86.5V
• Voltage - Clamping (Max) @ Ipp: 125V
• Current - Peak Pulse (10/1000µs): 4.8A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The P6SMB91CAHE3_B/I is identified as a manufacturer-recommended substitute. This part maintains identical electrical specifications and package configuration while offering active product status and improved inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB91CAHE3_B/I is the direct equivalent for the obsolete P6SMB91CAHE3_A/I. Both parts maintain identical electrical performance specifications and automotive-grade qualification (AEC-Q101). The primary distinction is product status: the substitute part is active and carries Tape & Reel packaging, ensuring procurement viability and supply chain continuity. Both parts satisfy ROHS3 compliance and REACH requirements. Selection of the P6SMB91CAHE3_B/I is appropriate for new designs and legacy system updates requiring this voltage and current rating in the DO-214AA package.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB91CAHE3_B/I be used as a direct replacement for the P6SMB91CAHE3_A/I?

A: Yes. Both parts are electrically identical with matching voltage ratings (77.8V standoff, 125V clamping), current specifications (4.8A peak pulse), and package configuration (DO-214AA, SMB). The substitute maintains the same automotive grade and AEC-Q101 qualification.

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

A: The primary difference is product status. The P6SMB91CAHE3_A/I is obsolete, while the P6SMB91CAHE3_B/I is active. The substitute also features Tape & Reel packaging, which is standard for active production inventory.

Q: Are there any thermal or operating condition differences?

A: No. Both parts operate across the identical temperature range of -65°C to 150°C (TJ) and maintain the same 600W peak pulse power rating.

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

A: Yes. Both parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and electrical compatibility with existing board designs without layout modifications.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both the P6SMB91CAHE3_A/I and P6SMB91CAHE3_B/I carry automotive grade classification and AEC-Q101 qualification, meeting automotive industry standards.