P6SMB11AT3G Equivalent & Substitute Parts

Part Overview

The P6SMB11AT3G is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for surface mount applications in the SMB package. This unidirectional Zener diode provides 15.6V clamping protection with a peak pulse current rating of 38A and 600W peak pulse power dissipation. The device is qualified to AEC-Q101 automotive standards and operates across a temperature range of -65°C to 150°C.

The P6SMB11AT3G is currently classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring 9.4V reverse standoff voltage protection.

Substiute Parts

P6SMB11AT3G

onsemiIn Stock: 3766P6SMB11AT3G Datasheet

Current PartRFQ

P6SMB11A

Eaton - Electronics DivisionIn Stock: 15183P6SMB11A Datasheet

DirectRFQ

P6SMB11A

Eaton - Electronics DivisionIn Stock: 15183P6SMB11A Datasheet

DirectRFQ

1KSMB11A

Taiwan Semiconductor CorporationIn Stock: 10111KSMB11A Datasheet

SimilarRFQ

SMBJP6KE11A-TP

Micro Commercial CoIn Stock: 6927SMBJP6KE11A-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB11AT3G is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 9.4V
• Voltage - Breakdown (Min): 10.5V
• Voltage - Clamping (Max) @ Ipp: 15.6V
• Package / Case: DO-214AA, SMB (surface mount compatibility)
• Type: Zener, Unidirectional (1 channel)

Substitute parts must maintain identical voltage specifications and package compatibility. Peak pulse current and power ratings may vary within acceptable design margins, provided the substitute meets or exceeds the minimum electrical performance requirements of the original design.

The following parts satisfy substitution criteria:

Direct Equivalent: P6SMB11A (Eaton - Electronics Division) — maintains all critical voltage parameters and package specifications with active product status.

Similar Substitutes: 1KSMB11A (Taiwan Semiconductor Corporation) and SMBJP6KE11A-TP (Micro Commercial Co) — meet voltage and package requirements with enhanced peak pulse current and power ratings.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: P6SMB11A (Eaton - Electronics Division)

The P6SMB11A is the recommended direct equivalent for the obsolete P6SMB11AT3G. This part maintains identical voltage specifications (9.4V reverse standoff, 10.5V breakdown minimum, 15.6V clamping maximum) and package configuration (DO-214AA, SMB). The P6SMB11A is currently in active production status with 15,100 units in stock. RoHS compliance and MSL 1 rating ensure compatibility with modern manufacturing processes. The operating temperature range (-55°C to 150°C) covers the primary operating window of the original part, with the exception of the extended low-temperature specification (-65°C minimum on the original).

Alternative Substitutes: 1KSMB11A and SMBJP6KE11A-TP

Both 1KSMB11A (Taiwan Semiconductor Corporation) and SMBJP6KE11A-TP (Micro Commercial Co) meet the core voltage and package requirements. These parts offer enhanced electrical performance with higher peak pulse current and power ratings (64.1A / 1000W and 39.1A / 600W respectively). Both are ROHS3 compliant and support extended operating temperatures to 175°C. These substitutes are suitable for applications where improved transient protection margin or higher temperature operation is beneficial.

Compliance Considerations

All substitute parts maintain AEC-Q101 equivalent qualification status through REACH compliance and EAR99 export classification. The P6SMB11A is explicitly RoHS compliant; 1KSMB11A and SMBJP6KE11A-TP are ROHS3 compliant. All parts carry MSL 1 (unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can P6SMB11A be used as a direct replacement for P6SMB11AT3G?

A: Yes. The P6SMB11A maintains identical voltage specifications (9.4V reverse standoff, 10.5V breakdown, 15.6V clamping) and package configuration (DO-214AA, SMB). The primary difference is product status (active vs. obsolete) and operating temperature range (-55°C to 150°C vs. -65°C to 150°C). For applications operating above -55°C, this substitution is electrically and mechanically compatible.

Q: What is the difference between the substitute parts in terms of electrical performance?

A: All substitute parts maintain identical voltage protection specifications. The primary differences are peak pulse current and power dissipation ratings. The 1KSMB11A provides 64.1A peak pulse current and 1000W power dissipation, compared to 38-39.1A and 600W for the other parts. This enhanced rating provides greater transient protection margin but does not affect voltage clamping characteristics.

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

A: Yes. All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and PCB layout compatibility with the original P6SMB11AT3G design.

Q: What compliance certifications apply to these substitute parts?

A: All parts are REACH compliant and classified as EAR99 for export purposes. The P6SMB11A is RoHS compliant; 1KSMB11A and SMBJP6KE11A-TP are ROHS3 compliant. All parts carry MSL 1 (unlimited) moisture sensitivity rating, suitable for standard reflow soldering processes.

Q: Does operating temperature range affect substitution suitability?

A: The P6SMB11AT3G specifies -65°C to 150°C operation. Substitute parts specify -55°C to 150°C (P6SMB11A) or -55°C to 175°C (1KSMB11A and SMBJP6KE11A-TP). For applications requiring operation below -55°C, the original part specification must be maintained. For standard industrial and automotive applications operating above -55°C, all substitutes are suitable.