P6SMB9.1AHE3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB9.1AHE3_A/I is a unidirectional 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, providing transient overvoltage protection with a 9.1V reverse standoff voltage and 13.4V maximum clamping voltage. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

P6SMB9.1AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 822P6SMB9.1AHE3_A/I Datasheet

Current PartRFQ

P6SMB9.1AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 844P6SMB9.1AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB9.1AHE3_A/I is determined by strict equivalence across the following critical parameters:

Voltage specifications: Reverse standoff voltage of 7.78V (typical), breakdown voltage minimum of 8.65V, and maximum clamping voltage of 13.4V at peak pulse current must remain constant.

Current and power ratings: Peak pulse current of 44.8A at 10/1000µs pulse duration and peak pulse power of 600W must be maintained.

Package and mounting: DO-214AA (SMB) surface mount package is mandatory for PCB compatibility.

Environmental and compliance specifications: Operating temperature range of -65°C to 150°C (TJ), automotive grade classification, and AEC-Q101 qualification must be preserved.

The P6SMB9.1AHE3_B/I variant qualifies as a direct substitute, differing only in packaging format (Tape & Reel versus bulk) and product status (active versus obsolete), while maintaining all electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB9.1AHE3_B/I is the direct equivalent for the obsolete P6SMB9.1AHE3_A/I. Both components are manufactured by Vishay and maintain identical electrical specifications, thermal operating range, and automotive-grade qualification with AEC-Q101 certification. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Selection of the P6SMB9.1AHE3_B/I is appropriate for both replacement of existing assemblies and new design implementations. The difference in packaging format (Tape & Reel versus bulk) does not affect component performance or PCB assembly compatibility; this distinction reflects only the distribution and handling method. Both variants comply with ROHS3 and REACH requirements.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB9.1AHE3_B/I be used as a direct replacement for the P6SMB9.1AHE3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The P6SMB9.1AHE3_B/I is the active production equivalent and is suitable for direct substitution in all applications where the original part was specified.

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

A: The primary difference is product status and packaging format. The P6SMB9.1AHE3_A/I is obsolete and supplied in bulk packaging, while the P6SMB9.1AHE3_B/I is active production and supplied in Tape & Reel format. All electrical and mechanical parameters are identical.

Q: Are there any compatibility concerns when switching from the A/I variant to the B/I variant?

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

Q: Does the Tape & Reel packaging affect component performance?

A: No. Tape & Reel packaging is a distribution format that does not influence electrical performance, thermal characteristics, or reliability. The component itself remains unchanged.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the P6SMB9.1AHE3_A/I and P6SMB9.1AHE3_B/I carry automotive grade classification and AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: What certifications and compliance standards apply to these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. They maintain AEC-Q101 automotive qualification and are classified as automotive grade components.