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

Part Overview

The P6SMB9.1CA-M3/5B is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates as a bidirectional Zener diode in the DO-214AA (SMB) package, designed for general-purpose transient voltage suppression applications. The part is currently active in production with 798 pieces in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Substiute Parts

P6SMB9.1CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 905P6SMB9.1CA-M3/5B Datasheet

Current PartRFQ

P6SMB9.1CA

Taiwan Semiconductor CorporationIn Stock: 30314P6SMB9.1CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB9.1CA-M3/5B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7.78V
• Voltage - Breakdown (Min): 8.65V
• Voltage - Clamping (Max) @ Ipp: 13.4V
• Current - Peak Pulse (10/1000µs): minimum 44.8A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Substitute parts must maintain identical voltage specifications and clamping characteristics. Peak pulse current must meet or exceed the original specification. Package and mounting type must be compatible with existing PCB layouts. All substitutes must maintain equivalent environmental and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB9.1CA from Taiwan Semiconductor Corporation qualifies as a direct substitute for the P6SMB9.1CA-M3/5B. Both parts maintain identical voltage specifications (7.78V standoff, 8.65V breakdown, 13.4V clamping) and equivalent power dissipation (600W peak pulse). The substitute part exceeds the original peak pulse current specification (47A vs. 44.8A), providing additional margin.

Both parts are ROHS3 compliant and carry equivalent environmental certifications (REACH Unaffected, EAR99 classification). The primary difference is the operating temperature minimum: the Vishay part operates from -65°C while the Taiwan Semiconductor part operates from -55°C. Selection between these parts should be based on the specific application's minimum operating temperature requirement and packaging format preference (Tape & Box versus Tape & Reel).

Frequently Asked Questions (FAQ)

Q: Can the P6SMB9.1CA (Taiwan Semiconductor) be used in place of the P6SMB9.1CA-M3/5B (Vishay)?

A: Yes, provided the application does not require operation below -55°C. All electrical parameters, voltage ratings, and package specifications are compatible.

Q: What is the difference between Tape & Box and Tape & Reel packaging?

A: Both formats contain the same component in DO-214AA (SMB) package. Tape & Reel (TR) is standard for automated assembly lines, while Tape & Box (TB) is used for smaller quantities or manual assembly. The electrical and mechanical specifications are identical.

Q: Are both parts suitable for the same PCB layout?

A: Yes. Both parts use the DO-214AA (SMB) surface mount package with identical footprints and pin configurations.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: Does the higher peak pulse current (47A vs. 44.8A) of the substitute part affect compatibility?

A: No. The substitute part's higher current rating provides additional design margin and does not create compatibility issues. It remains suitable for applications designed for the original 44.8A specification.