P6SMB91CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB91CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for telecom applications requiring transient overvoltage protection with a 77.8V reverse standoff voltage and 125V maximum clamping voltage. The part is currently listed as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance.

Substiute Parts

P6SMB91CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1087P6SMB91CAHM3_A/I Datasheet

Current PartRFQ

P6SMB91CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 786P6SMB91CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMB91CAHM3_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 substitute part P6SMB91CAHM3_B/I maintains identical electrical specifications and mechanical compatibility while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB91CAHM3_B/I is the direct equivalent for the obsolete P6SMB91CAHM3_A/I. Both parts are manufactured by Vishay and maintain identical electrical and mechanical specifications. The substitute part carries active product status, ensuring long-term availability and supply chain continuity. Both parts meet AEC-Q101 automotive qualification and ROHS3 compliance requirements, making them suitable for equivalent use in automotive and telecom applications. The primary difference is packaging format: the substitute is supplied in Tape & Reel configuration, which is standard for production environments.

Frequently Asked Questions (FAQ)

Q: Can P6SMB91CAHM3_B/I be used as a direct replacement for P6SMB91CAHM3_A/I?

A: Yes. Both parts are identical in electrical performance and mechanical compatibility. The substitute maintains the same voltage ratings (77.8V standoff, 125V clamping), current handling (4.8A peak pulse), power dissipation (600W), and operating temperature range (-65°C to 150°C). Both are AEC-Q101 qualified and ROHS3 compliant.

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

A: The primary difference is product status and packaging. P6SMB91CAHM3_A/I is obsolete and supplied in bulk packaging, while P6SMB91CAHM3_B/I is active and supplied in Tape & Reel format. Electrical specifications are identical.

Q: Are there any compatibility concerns when switching from the main part to the substitute?

A: No compatibility concerns exist. Both parts use the DO-214AA (SMB) surface mount package with identical pinout and footprint. PCB layout and assembly processes require no modification.

Q: What certifications apply to the substitute part?

A: P6SMB91CAHM3_B/I carries AEC-Q101 automotive qualification, ROHS3 compliance, and REACH unaffected status, matching the certifications of the main part.

Q: Is the Tape & Reel packaging suitable for my application?

A: Tape & Reel packaging is standard for automated assembly and production environments. If manual assembly or bulk handling is required, contact your supplier regarding alternative packaging options.