P6SMB9.1A-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB9.1A-M3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The device is currently in active production status with 1,069 pieces available in inventory. Equivalent and substitute parts are identified when they maintain identical electrical performance characteristics and package compatibility while potentially offering different packaging formats or manufacturer sourcing options.

Substiute Parts

P6SMB9.1A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1171P6SMB9.1A-M3/5B Datasheet

Current PartRFQ

P6SMB9.1A

Taiwan Semiconductor CorporationIn Stock: 23875P6SMB9.1A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB9.1A-M3/5B is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 7.78V
• Voltage - Breakdown (Min): 8.65V
• Voltage - Clamping (Max) @ Ipp: 13.4V
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

The substitute part P6SMB9.1A (Taiwan Semiconductor Corporation) maintains all critical electrical specifications and package compatibility. Variations in peak pulse current (47A vs. 44.8A) and operating temperature range (-55°C to 150°C vs. -65°C to 150°C) represent minor performance differences that do not disqualify substitution in applications where the original part specifications are met or exceeded.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain active product status and full ROHS3 compliance. The P6SMB9.1A-M3/5B from Vishay offers a wider operating temperature range (-65°C to 150°C) compared to the Taiwan Semiconductor substitute (-55°C to 150°C). Selection between these parts should be based on:

• Temperature environment requirements: Use the Vishay part for applications requiring operation below -55°C
• Packaging requirements: The Vishay part is supplied in Tape & Box format; the Taiwan Semiconductor part is supplied in Tape & Reel format
• Current margin requirements: The Taiwan Semiconductor part provides a 2.2A higher peak pulse current rating (47A vs. 44.8A)
• Inventory and lead time considerations: Taiwan Semiconductor maintains significantly higher inventory (23,850 pieces vs. 1,069 pieces)

Frequently Asked Questions (FAQ)

Q: Can the P6SMB9.1A from Taiwan Semiconductor replace the P6SMB9.1A-M3/5B from Vishay?

A: Yes, for applications operating within the -55°C to 150°C temperature range. Both parts share identical voltage specifications (7.78V standoff, 8.65V breakdown, 13.4V clamping), identical power rating (600W), and identical DO-214AA (SMB) package. The Taiwan Semiconductor part provides equal or superior current handling (47A vs. 44.8A).

Q: What is the difference in packaging between these parts?

A: The Vishay P6SMB9.1A-M3/5B is supplied in Tape & Box (TB) format, while the Taiwan Semiconductor P6SMB9.1A is supplied in Tape & Reel (TR) format. Both formats are standard for surface mount components and are compatible with automated assembly equipment.

Q: Are there temperature limitations when using the substitute part?

A: The Taiwan Semiconductor substitute has a minimum operating temperature of -55°C compared to -65°C for the Vishay original. If your application requires operation below -55°C, the Vishay part must be used.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What is the base product number for these parts?

A: Both the P6SMB9.1A-M3/5B and P6SMB9.1A share the base product number P6SMB9.1, indicating they are variants within the same product family.