P6SMB68A-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB68A-M3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates as a Zener-type TVS device in the DO-214AA (SMB) surface mount package, designed for general-purpose transient voltage suppression applications. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when electrical parameters and mechanical compatibility align within specified tolerances, enabling seamless integration into existing designs or addressing supply chain requirements.

Substiute Parts

P6SMB68A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1086P6SMB68A-M3/5B Datasheet

Current PartRFQ

P6SMB68A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 6338P6SMB68A-E3/52 Datasheet

DirectRFQ

SMBJP6KE68A-TP

Micro Commercial CoIn Stock: 5551SMBJP6KE68A-TP Datasheet

UpgradeRFQ

P6SMB68A

Eaton - Electronics DivisionIn Stock: 32269P6SMB68A Datasheet

MFR RecommendedRFQ

P6SMB68A

Eaton - Electronics DivisionIn Stock: 32269P6SMB68A Datasheet

MFR RecommendedRFQ

SM6T68A

STMicroelectronicsIn Stock: 125258SM6T68A Datasheet

MFR RecommendedRFQ

SM6T68AY

STMicroelectronicsIn Stock: 980SM6T68AY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB68A-M3/5B are classified based on strict electrical and mechanical parameter alignment:

Direct Substitutes maintain identical or equivalent electrical specifications across all critical parameters: Voltage - Reverse Standoff (58.1V), Voltage - Breakdown (64.6V minimum), Voltage - Clamping (92V maximum), Current - Peak Pulse (6.5A nominal), Power - Peak Pulse (600W), and surface mount DO-214AA package compatibility. Packaging format variations (Tape & Box vs. Tape & Reel) do not affect electrical substitutability.

Upgrade Substitutes provide equivalent or superior electrical performance with minor parameter variations within acceptable engineering tolerances. These parts maintain the same voltage ratings and package form factor while potentially offering enhanced current handling or extended temperature ranges.

Cross-Manufacturer Substitutes from alternative manufacturers meet the same electrical specifications and package requirements, enabling supply chain flexibility while maintaining circuit performance.

The following parameters determine substitutability:

• Voltage - Reverse Standoff: 58.1V (required)
• Voltage - Clamping (Max) @ Ipp: 92V (required)
• Current - Peak Pulse: ≥6.5A (required)
• Package / Case: DO-214AA, SMB (required)
• Mounting Type: Surface Mount (required)

Parameter Comparison

Engineering Selection Recommendations

P6SMB68A-E3/52 (Vishay) is a direct substitute with identical electrical specifications and operating temperature range. The only difference is packaging format (Tape & Reel vs. Tape & Box), which does not affect circuit performance. This part is recommended for applications requiring reel packaging for automated assembly.

SMBJP6KE68A-TP (Micro Commercial Co) is an upgrade substitute offering marginally higher peak pulse current (6.6A vs. 6.5A) and extended upper operating temperature (175°C vs. 150°C). This part is suitable for applications requiring enhanced thermal performance or slightly higher transient current handling.

SM6T68A (STMicroelectronics) and SM6T68AY (STMicroelectronics) are cross-manufacturer substitutes with higher voltage clamping (121V vs. 92V) and significantly higher peak pulse current (33A at 8/20µs vs. 6.5A at 10/1000µs). These parts are suitable only if circuit design tolerates higher clamping voltage. SM6T68AY includes AEC-Q101 automotive qualification and is recommended for automotive-grade applications.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and Active product status, ensuring regulatory and supply chain compatibility with the main part.

Frequently Asked Questions (FAQ)

Q: Can P6SMB68A-E3/52 be used as a direct replacement for P6SMB68A-M3/5B?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications: 58.1V reverse standoff, 92V clamping voltage, and 6.5A peak pulse current. The difference is packaging format (Tape & Reel vs. Tape & Box), which does not affect electrical performance or circuit compatibility.

Q: What is the difference between SMBJP6KE68A-TP and the main part?

A: SMBJP6KE68A-TP offers marginally higher peak pulse current (6.6A vs. 6.5A) and extended upper operating temperature (175°C vs. 150°C). Electrical voltage parameters remain equivalent. This part is suitable for thermal-demanding applications.

Q: Can SM6T68A or SM6T68AY replace P6SMB68A-M3/5B?

A: These parts share the same reverse standoff voltage (58.1V) and package form factor (DO-214AA, SMB) but have higher voltage clamping (121V vs. 92V) and significantly higher peak pulse current (33A vs. 6.5A). Substitution is possible only if circuit design accommodates higher clamping voltage. SM6T68AY includes automotive qualification (AEC-Q101).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the main part's regulatory and environmental specifications.

Q: Does packaging format (Tape & Box vs. Tape & Reel) affect electrical performance?

A: No. Packaging format affects only handling and assembly logistics. Electrical specifications and circuit performance remain identical regardless of packaging format.

Q: Which substitute part is recommended for automotive applications?

A: SM6T68AY is qualified to AEC-Q101 automotive standard and is recommended for automotive-grade circuit designs requiring TVS protection.