P6SMB30A-E3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB30A-E3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates with a reverse standoff voltage of 25.6V and provides clamping protection at 41.4V maximum, making it suitable for general-purpose transient suppression applications. The part is currently active in production with 816 units in stock. Equivalent and substitute parts are identified based on matching electrical characteristics and package compatibility to support procurement flexibility and supply chain continuity.

Substiute Parts

P6SMB30A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 911P6SMB30A-E3/5B Datasheet

Current PartRFQ

SM6T30A

STMicroelectronicsIn Stock: 37818SM6T30A 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

SM6T30AY

STMicroelectronicsIn Stock: 1407SM6T30AY Datasheet

MFR RecommendedRFQ

SMBJP6KE30A-TP

Micro Commercial CoIn Stock: 9348SMBJP6KE30A-TP Datasheet

MFR RecommendedRFQ

TPSMB30A

Littelfuse Inc.In Stock: 1466TPSMB30A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB30A-E3/5B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 25.6V
• Voltage - Breakdown (Min): 28.5V
• Voltage - Clamping (Max) @ Ipp: 41.4V
• Package / Case: DO-214AA, SMB (surface mount)
• Unidirectional configuration (1 channel)

Parts meeting these electrical and mechanical specifications are classified as direct substitutes. Parts with identical standoff and breakdown voltages but different clamping voltages or peak pulse currents remain functionally compatible within the same application category, provided the clamping voltage does not exceed system requirements and the package footprint matches.

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Equivalents (Identical Clamping Voltage):

1KSMB30A (Taiwan Semiconductor), P6SMB30A (Eaton), SMBJP6KE30A-TP (Micro Commercial Co), and TPSMB30A (Littelfuse) all match the 41.4V clamping voltage specification. These parts are electrically equivalent to the P6SMB30A-E3/5B. The 1KSMB30A offers extended power dissipation (1000W vs. 600W) and wider operating temperature range (-55°C to 175°C). TPSMB30A provides the widest temperature range (-65°C to 175°C) and carries automotive qualification (AEC-Q101). The Eaton P6SMB30A is not ROHS3 compliant and should be avoided in applications requiring regulatory compliance.

Higher Clamping Voltage Alternatives:

SM6T30A and SM6T30AY (both STMicroelectronics) feature 53.5V clamping voltage with significantly higher peak pulse current (75A vs. 14.5A). These parts are suitable only when higher clamping voltage is acceptable and increased transient current handling is required. SM6T30AY includes automotive qualification (AEC-Q101).

Compliance Considerations:

All substitute parts except the Eaton P6SMB30A maintain ROHS3 compliance. For automotive applications, SM6T30AY and TPSMB30A are qualified to AEC-Q101. The original Vishay part and most substitutes support unlimited moisture sensitivity (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can SM6T30A or SM6T30AY be used as direct replacements for P6SMB30A-E3/5B?

A: These parts share identical reverse standoff (25.6V) and breakdown (28.5V) voltages but feature higher clamping voltage (53.5V vs. 41.4V) and significantly higher peak pulse current (75A vs. 14.5A). They are electrically compatible in applications where the higher clamping voltage does not exceed system tolerance. The package footprint (DO-214AA, SMB) is identical.

Q: What is the difference between the Vishay P6SMB30A-E3/5B and the Eaton P6SMB30A?

A: Both parts share the same electrical specifications (25.6V standoff, 41.4V clamping, 14.7A peak pulse). The primary difference is RoHS compliance: Vishay is ROHS3 compliant while Eaton is not. For new designs or regulated applications, the Vishay part is preferred.

Q: Is TPSMB30A suitable for automotive applications?

A: Yes. TPSMB30A is qualified to AEC-Q101 and offers the widest operating temperature range (-65°C to 175°C) among all listed substitutes. It matches the electrical specifications of the original part (25.6V standoff, 41.4V clamping, 14.7A peak pulse) and maintains ROHS3 compliance.

Q: Why does 1KSMB30A have higher power dissipation (1000W vs. 600W)?

A: The 1KSMB30A is rated for 1000W peak pulse power while maintaining identical voltage and current specifications. This represents a higher power handling capability within the same package and electrical rating, providing additional design margin in transient suppression applications.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility with the original P6SMB30A-E3/5B design.

Q: Which substitute part offers the best temperature range?

A: TPSMB30A (Littelfuse) provides the widest operating temperature range at -65°C to 175°C, matching the lower temperature limit of the original Vishay part while extending the upper limit by 25°C.