P6SMB68A-M3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB68A-M3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 58.1V reverse standoff voltage class and provides transient protection with a 92V maximum clamping voltage at peak pulse current. The part is Active status and ROHS3 compliant, designed for general purpose transient voltage suppression applications. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the DO-214AA (SMB) package family.

Substiute Parts

P6SMB68A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 859P6SMB68A-M3/52 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-M3/52 are grouped based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 58.1V
• Voltage - Breakdown (Min): 64.6V
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional

Secondary Compatibility Factors:

• Voltage - Clamping (Max) @ Ipp: 92V nominal
• Current - Peak Pulse: 6.5A nominal
• Power - Peak Pulse: 600W
• Operating Temperature Range: -65°C to 150°C minimum
• RoHS Status: ROHS3 Compliant

Parts are classified as direct equivalents when all primary criteria match. Upgrades are identified when electrical performance exceeds the main part specifications while maintaining package and voltage class compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Packaging Variant): P6SMB68A-E3/52 is a direct electrical equivalent to P6SMB68A-M3/52, differing only in packaging format (Tape & Reel versus Tape & Box). Both maintain identical electrical specifications and ROHS3 compliance. Selection between these variants depends on procurement and assembly requirements.

Upgrade Option (Enhanced Performance): SMBJP6KE68A-TP from Micro Commercial Co provides a performance upgrade with 6.6A peak pulse current (versus 6.5A) and extended operating temperature range (-55°C to 175°C versus -65°C to 150°C). Electrical voltage parameters remain matched. ROHS3 compliance is maintained. This part is suitable for applications requiring higher thermal operating margins.

Alternative Suppliers (Higher Clamping Voltage): SM6T68A and SM6T68AY from STMicroelectronics maintain the 58.1V reverse standoff voltage and 64.6V breakdown voltage but feature elevated clamping voltage (121V versus 92V) and significantly higher peak pulse current capability (33A versus 6.5A). These parts are suitable only for applications where the higher clamping voltage specification is acceptable. SM6T68AY includes AEC-Q101 automotive qualification. Both are ROHS3 compliant.

Product Status & Compliance: All listed parts maintain Active product status and ROHS3 compliance. Selection should prioritize parts with highest inventory availability for supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can P6SMB68A-E3/52 be used as a direct replacement for P6SMB68A-M3/52? A: Yes. Both parts are electrically identical with matching voltage ratings (58.1V standoff, 92V clamping), current ratings (6.5A), and operating temperature range (-65°C to 150°C). The only difference is packaging format: Tape & Reel versus Tape & Box. Selection depends on your assembly process requirements.

Q: What is the difference between SMBJP6KE68A-TP and the main part? A: SMBJP6KE68A-TP matches all voltage specifications but offers slightly higher peak pulse current (6.6A versus 6.5A) and an extended upper operating temperature limit (175°C versus 150°C). It is suitable for applications requiring enhanced thermal performance while maintaining the same voltage protection characteristics.

Q: Why do SM6T68A and SM6T68AY have different clamping voltages? A: SM6T68A and SM6T68AY are from a different product series (STMicroelectronics TRANSIL™) with higher clamping voltage specification (121V versus 92V) and significantly higher peak pulse current (33A versus 6.5A). These parts are suitable only for circuit designs that can tolerate the higher clamping voltage. They are not direct substitutes but alternative suppliers for the same voltage class.

Q: Is SM6T68AY suitable for automotive applications? A: SM6T68AY carries AEC-Q101 automotive qualification and is rated for -55°C to 150°C operating temperature. It is suitable for automotive applications where the higher clamping voltage (121V) and peak pulse current (33A) specifications are compatible with circuit requirements.

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

Q: Are all parts ROHS3 compliant? A: Yes. All listed parts, including the main part P6SMB68A-M3/52 and all substitutes, are ROHS3 compliant. One Eaton part listed carries RoHS compliance (non-ROHS3 designation) and should be verified for your specific regulatory requirements.

Q: What is the operating temperature range consideration for substitution? A: The main part operates from -65°C to 150°C. SMBJP6KE68A-TP extends the upper limit to 175°C. SM6T68A, SM6T68AY, and the Eaton part operate from -55°C to 150°C. If your application requires operation below -55°C, only the main part P6SMB68A-M3/52 or P6SMB68A-E3/52 are suitable.