P6SMB15A-M3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB15A-M3/52 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 provides transient overvoltage protection for general-purpose applications. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across manufacturing sources.

Substiute Parts

P6SMB15A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 815P6SMB15A-M3/52 Datasheet

Current PartRFQ

P6SMB15A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 2544P6SMB15A-E3/52 Datasheet

DirectRFQ

1KSMB15A

Taiwan Semiconductor CorporationIn Stock: 93641KSMB15A Datasheet

MFR RecommendedRFQ

P6SMB15A

Eaton - Electronics DivisionIn Stock: 17984P6SMB15A Datasheet

MFR RecommendedRFQ

P6SMB15A

Eaton - Electronics DivisionIn Stock: 17984P6SMB15A Datasheet

MFR RecommendedRFQ

SM6T15A

STMicroelectronicsIn Stock: 21094SM6T15A Datasheet

MFR RecommendedRFQ

SM6T15AY

STMicroelectronicsIn Stock: 1966SM6T15AY Datasheet

MFR RecommendedRFQ

SMBJP6KE15A-TP

Micro Commercial CoIn Stock: 1493SMBJP6KE15A-TP Datasheet

MFR RecommendedRFQ

TPSMB15A

Littelfuse Inc.In Stock: 23380TPSMB15A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB15A-M3/52 is determined by the following critical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 12.8V
• Voltage - Breakdown (Min): 14.3V
• Voltage - Clamping (Max) @ Ipp: 21.2V
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional (1 channel)

Secondary Compatibility Factors:

• Current - Peak Pulse rating (minimum 28.3A acceptable)
• Power - Peak Pulse rating (minimum 600W acceptable)
• Operating Temperature range (must encompass application requirements)
• RoHS and REACH compliance status

Substitute parts are grouped into two categories:

Category 1 - Direct Electrical Equivalents (Identical Voltage & Clamping Specifications): Parts with matching 12.8V standoff, 14.3V breakdown, and 21.2V clamping voltages. These parts differ only in packaging format (Tape & Reel vs. Tape & Box) or manufacturer source.

Category 2 - Functional Equivalents (Matching Voltage Specifications with Enhanced Performance): Parts with identical voltage ratings but higher current or power ratings. These provide superior transient suppression capability while maintaining electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Packaging Variant): P6SMB15A-E3/52 is a direct substitute for P6SMB15A-M3/52. Both parts are manufactured by Vishay with identical electrical specifications. The only difference is packaging format: E3/52 uses Tape & Reel (TR) while M3/52 uses Tape & Box (TB). Selection depends on procurement and assembly requirements.

Equivalent Parts (Same Voltage Ratings, Different Manufacturers): SMBJP6KE15A-TP (Micro Commercial Co) and TPSMB15A (Littelfuse Inc.) provide electrical equivalence with identical 12.8V standoff, 14.3V breakdown, and 21.2V clamping specifications. TPSMB15A extends the operating temperature range to -65°C ~ 175°C and carries AEC-Q101 automotive qualification. Both are ROHS3 compliant and suitable for general-purpose applications.

Enhanced Performance Substitutes: 1KSMB15A (Taiwan Semiconductor Corporation) offers superior transient suppression with 47.2A peak pulse current and 1000W power rating while maintaining identical voltage specifications. This part is suitable for applications requiring higher transient energy absorption. Operating temperature range extends to -55°C ~ 175°C.

Higher Clamping Voltage Alternatives: SM6T15A and SM6T15AY (STMicroelectronics) maintain the 12.8V standoff and 14.3V breakdown voltages but exhibit 27.2V clamping voltage. These parts deliver significantly higher peak pulse current (147A at 8/20µs) and are suitable only if the application circuit can tolerate the higher clamping voltage. SM6T15AY carries AEC-Q101 automotive qualification.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. Selection should account for application-specific temperature requirements and any automotive qualification mandates.

Frequently Asked Questions (FAQ)

Q: Can P6SMB15A-E3/52 replace P6SMB15A-M3/52 directly? A: Yes. Both parts are electrically identical Vishay products. The difference is packaging format: E3/52 is Tape & Reel while M3/52 is Tape & Box. Selection depends on your assembly process requirements.

Q: What is the difference between the Vishay P6SMB15A and the Eaton P6SMB15A? A: Both parts share identical part number designation but are manufactured by different companies. Electrical specifications are equivalent (12.8V standoff, 21.2V clamping, 28.8A peak pulse). The Eaton version operates at -55°C ~ 150°C versus Vishay's -65°C ~ 150°C. Verify manufacturer source requirements for your application.

Q: Can I use 1KSMB15A as a drop-in replacement? A: Yes, with design verification. The 1KSMB15A maintains identical voltage ratings (12.8V standoff, 21.2V clamping) but provides higher current capacity (47.2A vs. 28.3A) and power rating (1000W vs. 600W). This is a performance upgrade suitable for applications requiring enhanced transient suppression. Operating temperature range is -55°C ~ 175°C.

Q: Why do SM6T15A and SM6T15AY have different clamping voltages? A: SM6T15A and SM6T15AY are STMicroelectronics TRANSIL™ series parts with 27.2V clamping voltage, compared to 21.2V for the P6SMB15A. These parts are not direct substitutes unless your circuit design accommodates the higher clamping voltage. They offer superior current handling (147A at 8/20µs) for high-energy transient applications.

Q: Are automotive-qualified versions available? A: Yes. SM6T15AY (STMicroelectronics) and TPSMB15A (Littelfuse) both carry AEC-Q101 automotive qualification. SM6T15AY has 27.2V clamping (not a direct substitute). TPSMB15A maintains 21.2V clamping and is a direct electrical equivalent with automotive qualification.

Q: What packaging formats are available? A: All substitute parts use DO-214AA (SMB) surface mount package. Packaging variants include Tape & Reel (TR), Tape & Box (TB), and Cut Tape (CT) & Digi-Reel®. Selection depends on your procurement and assembly process. Electrical performance is independent of packaging format.

Q: Do all parts meet RoHS compliance? A: Yes. All listed parts are RoHS compliant. Most are ROHS3 compliant. The Eaton P6SMB15A carries standard RoHS compliance. Verify specific compliance requirements for your application and region.

Q: What is the temperature operating range difference between parts? A: Operating ranges vary: P6SMB15A-M3/52 operates -65°C ~ 150°C; 1KSMB15A operates -55°C ~ 175°C; TPSMB15A operates -65°C ~ 175°C. Select based on your application's thermal requirements. Extended temperature range parts may be necessary for automotive or industrial environments.