P6SMB30A-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB30A-M3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 25.6V reverse standoff voltage class and provides transient protection for general-purpose applications. The part is active in production status and fully RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the DO-214AA (SMB) package family.

Substiute Parts

P6SMB30A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 858P6SMB30A-M3/5B Datasheet

Current PartRFQ

P6SMB30A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1802P6SMB30A-E3/52 Datasheet

DirectRFQ

1KSMB30A

Taiwan Semiconductor CorporationIn Stock: 91221KSMB30A Datasheet

MFR RecommendedRFQ

P6SMB30A

Eaton - Electronics DivisionIn Stock: 25016P6SMB30A Datasheet

MFR RecommendedRFQ

P6SMB30A

Eaton - Electronics DivisionIn Stock: 25016P6SMB30A Datasheet

MFR RecommendedRFQ

SM6T30A

STMicroelectronicsIn Stock: 37818SM6T30A Datasheet

MFR RecommendedRFQ

SM6T30AY

STMicroelectronicsIn Stock: 1407SM6T30AY Datasheet

MFR RecommendedRFQ

SZP6SMB30AT3G

Littelfuse Inc.In Stock: 1477SZP6SMB30AT3G Datasheet

MFR RecommendedRFQ

TPSMB30A

Littelfuse Inc.In Stock: 1466TPSMB30A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB30A-M3/5B are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Voltage - Reverse Standoff (Typ): 25.6V
• Voltage - Breakdown (Min): 28.5V
• Voltage - Clamping (Max) @ Ipp: 41.4V
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional

Substitute parts are classified into two categories:

Direct Electrical Equivalents: Parts matching all key voltage parameters (25.6V standoff, 28.5V breakdown, 41.4V clamping) with peak pulse current ratings between 14.4A and 14.7A. These parts are interchangeable in applications where the original specification is required.

Enhanced Performance Alternatives: Parts with identical voltage parameters but higher peak pulse current ratings (24.2A or 75A) or different clamping voltages (53.5V). These parts provide superior transient suppression capability and are suitable for applications requiring increased margin or higher energy absorption.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance):

P6SMB30A-E3/52 (Vishay) is a direct equivalent differing only in packaging format (Tape & Reel versus Tape & Box). Both parts maintain identical electrical specifications and RoHS3 compliance. Selection between these variants depends on procurement and assembly requirements.

SZP6SMB30AT3G (Littelfuse Inc.) and TPSMB30A (Littelfuse Inc.) are functionally equivalent alternatives with peak pulse currents of 14.4A and 14.7A respectively, matching the original specification within tolerance. Both are AEC-Q101 qualified and RoHS3 compliant. TPSMB30A extends the operating temperature range to 175°C.

Enhanced Performance Alternative:

1KSMB30A (Taiwan Semiconductor Corporation) provides superior transient suppression with 24.2A peak pulse current and 1000W peak pulse power, while maintaining identical voltage parameters. This part is suitable for applications requiring increased protection margin. Operating temperature range extends to 175°C.

Higher Clamping Voltage Alternative:

SM6T30A and SM6T30AY (STMicroelectronics) feature a higher clamping voltage of 53.5V with significantly increased peak pulse current of 75A (8/20µs pulse). SM6T30AY carries AEC-Q101 automotive qualification. These parts are appropriate for applications requiring enhanced transient energy absorption beyond the original specification.

Compliance Consideration:

The Eaton P6SMB30A variant is RoHS non-compliant and should be selected only when legacy compliance status is required. All other alternatives maintain ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can P6SMB30A-E3/52 replace P6SMB30A-M3/5B directly?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications. The difference is packaging format: P6SMB30A-M3/5B is supplied in Tape & Box, while P6SMB30A-E3/52 is supplied in Tape & Reel. Electrical performance and RoHS compliance are equivalent.

Q: What is the difference between the 41.4V clamping variants and the SM6T30A/SM6T30AY 53.5V variants?

A: The SM6T30A and SM6T30AY series have a higher clamping voltage (53.5V versus 41.4V) and significantly higher peak pulse current (75A versus 14.5A). These parts provide greater transient suppression capability. Selection depends on whether the application requires the lower clamping voltage of the original specification or can tolerate the higher clamping voltage of the alternative.

Q: Are automotive-qualified alternatives available?

A: Yes. SZP6SMB30AT3G (Littelfuse) and SM6T30AY (STMicroelectronics) both carry AEC-Q101 automotive qualification. TPSMB30A (Littelfuse) is also AEC-Q101 qualified. These parts are suitable for automotive and high-reliability applications.

Q: Does the 1KSMB30A provide better protection than the original part?

A: The 1KSMB30A provides higher peak pulse current (24.2A versus 14.5A) and peak pulse power (1000W versus 600W) while maintaining identical voltage parameters. This results in greater transient energy absorption capability. Selection should be based on application requirements and thermal management considerations.

Q: Are all substitute parts available in the same DO-214AA (SMB) package?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility. Packaging format variations (Tape & Reel, Cut Tape, Tape & Box) do not affect electrical performance or PCB assembly compatibility.

Q: What is the temperature range consideration when selecting alternatives?

A: The original P6SMB30A-M3/5B operates from -65°C to 150°C. TPSMB30A and 1KSMB30A extend the upper limit to 175°C. Selection should account for application thermal requirements and any temperature-dependent performance specifications.