Vishay General Semiconductor P6SMB91A-M3/52 Equivalent & Substitute Parts Reference

Part Overview

The Vishay General Semiconductor P6SMB91A-M3/52 is an active Transient Voltage Suppressor (TVS) diode designed for general-purpose transient protection in electronic circuits. It features a surface-mount DO-214AA (SMBJ) package and is characterized by a 77.8V reverse standoff voltage, 125V clamping voltage, and a 4.8A peak pulse current capability. Alternative models may be required due to supply chain considerations, application-specific requirements, or inventory optimization.

Substiute Parts

P6SMB91A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1146P6SMB91A-M3/52 Datasheet

Current PartRFQ

SZP6SMB91AT3G

Littelfuse Inc.In Stock: 3862SZP6SMB91AT3G Datasheet

DirectRFQ

P6SMB91A

Eaton - Electronics DivisionIn Stock: 30307P6SMB91A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB91A-M3/52 are grouped strictly according to the following key electrical and mechanical parameters: function/category, package (DO-214AA, SMB), unidirectional channel count, voltage ratings (reverse standoff, breakdown, clamping), peak pulse current/power, mounting type, operating temperature, and compliance/regulatory status. Only those parts that match these parameters and product status are listed as viable substitutes.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts share an active status and comply with the relevant RoHS restrictions for hazardous substances. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all, ensuring suitability for standard assembly environmental requirements. Each part is surface mount in a DO-214AA (SMB) package, which supports direct replacement in compatible PCB layouts. Certification qualifiers, such as ROHS3 Compliant and AEC-Q101, are noted and should be matched to the intended application regulatory requirements.

Frequently Asked Questions (FAQ)

Q: What parameters must match to substitute the P6SMB91A-M3/52 TVS diode?
A: Substitute selection requires matching function, voltage ratings, current rating, package type (DO-214AA, SMB), unidirectional channel count, operating temperature range, and compliance status.

Q: Is the physical package of substitute parts compatible with the main part?
A: All substitutes listed utilize the DO-214AA (SMB) surface-mount package. This ensures mechanical and soldering compatibility with existing PCB designs.

Q: Are there differences in electrical performance among the substitutes?
A: All substitutes match electrical parameters for voltage ratings, pulse current, and peak power as specified. The Eaton P6SMB91A has a slightly higher peak pulse current rating (4.9A vs. 4.8A).

Q: What compliance or regulatory considerations should be observed?
A: Substitute parts maintain RoHS compliance and similar MSL ratings. Qualification standards such as AEC-Q101 are noted for automotive requirements.

Q: Can these substitutes be used interchangeably in the same application?
A: Substitution is validated on the basis of matched mechanical and electrical parameters as provided. No additional compatibility or certification information is assumed beyond the supplied specifications.