P6SMB13AT3 Equivalent & Substitute Parts

Part Overview

The P6SMB13AT3 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by onsemi, rated for 11.1V reverse standoff voltage with an 18.2V maximum clamping voltage at 33A peak pulse current. Housed in the DO-214AA (SMB) surface mount package, this component is designed for transient voltage protection in electronic circuits. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

P6SMB13AT3

onsemiIn Stock: 2802P6SMB13AT3 Datasheet

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1KSMB13A

Taiwan Semiconductor CorporationIn Stock: 301461KSMB13A Datasheet

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P6SMB13A

Eaton - Electronics DivisionIn Stock: 23892P6SMB13A Datasheet

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P6SMB13A

Eaton - Electronics DivisionIn Stock: 23892P6SMB13A Datasheet

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PTVS11VP1UP,115

NXP USA Inc.In Stock: 4031PTVS11VP1UP,115 Datasheet

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SMBJ11A

MeritekIn Stock: 50169SMBJ11A Datasheet

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SMBJ11A

MeritekIn Stock: 50169SMBJ11A Datasheet

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SMBJ11AE3/TR13

Microchip TechnologyIn Stock: 1158SMBJ11AE3/TR13 Datasheet

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TPSMB13A

Littelfuse Inc.In Stock: 148667TPSMB13A Datasheet

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TV06B110J-G

Comchip TechnologyIn Stock: 809TV06B110J-G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB13AT3 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 11.0V to 11.1V
• Voltage - Clamping (Max) @ Ipp: 18.2V
• Current - Peak Pulse (10/1000µs): 32.97A to 54.9A (within thermal design margin)
• Power - Peak Pulse: 600W to 1000W
• Package / Case: DO-214AA (SMB) or equivalent surface mount footprint
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional (1 channel)

Substitute parts meeting these criteria are functionally interchangeable in the P6SMB13AT3 application. Parts with identical voltage ratings and clamping characteristics but higher peak pulse current ratings provide enhanced margin and are acceptable substitutes. Package compatibility is mandatory for PCB assembly without redesign.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

1. TPSMB13A (Littelfuse) — Identical voltage ratings (11.1V standoff, 18.2V clamp), matching peak pulse current (34.6A), automotive grade with AEC-Q101 qualification, extended temperature range (-65 to 175°C), ROHS3 compliant. Direct replacement with superior temperature performance.

2. P6SMB13A (Eaton) — Identical voltage ratings, equivalent peak pulse current (34.6A), same 600W power rating, ROHS compliant. Active product status ensures long-term availability.

3. SMBJ11AE3/TR13 (Microchip) — Matching voltage ratings (11.0V standoff, 18.2V clamp), equivalent peak pulse current (33A), identical temperature range (-65 to 150°C), ROHS3 compliant, active product status.

Secondary Substitutes (Acceptable with Margin):

4. 1KSMB13A (Taiwan Semiconductor Corporation) — Identical voltage ratings, higher peak pulse current (54.9A) and power rating (1000W) provide thermal margin, extended temperature range (-55 to 175°C), ROHS3 compliant. Suitable for applications requiring enhanced transient handling.

5. SMBJ11A (Meritek) — Equivalent voltage ratings (11.0V standoff, 18.2V clamp), matching peak pulse current (32.97A), ROHS3 compliant, active product status, general purpose application rating.

6. TV06B110J-G (Comchip) — Equivalent voltage ratings, matching peak pulse current (32.97A), ROHS3 compliant, active product status.

Package Consideration:

7. PTVS11VP1UP,115 (NXP) — Meets voltage and current specifications with automotive grade and AEC-Q101 qualification. However, uses SOD-128 package instead of DO-214AA (SMB), requiring PCB layout modification. Select only if package change is acceptable.

For automotive applications requiring AEC-Q101 qualification, prioritize TPSMB13A, P6SMB13A, or SMBJ11AE3/TR13. For general purpose applications, SMBJ11A and TV06B110J-G are acceptable. The 1KSMB13A is suitable when enhanced transient margin is required.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher peak pulse current rating?

A: Yes. Parts with higher peak pulse current ratings (such as 1KSMB13A at 54.9A versus the original 33A) are acceptable substitutes. Higher current ratings provide additional thermal margin and do not compromise circuit protection. The clamping voltage and standoff voltage remain the critical parameters for protection function.

Q: What is the difference between DO-214AA and SMB package designations?

A: DO-214AA and SMB refer to the same physical package. SMB is the industry shorthand for the DO-214AA surface mount diode package. Parts listed with either designation are footprint-compatible on the same PCB.

Q: Why is PTVS11VP1UP,115 listed as a substitute if it uses a different package?

A: PTVS11VP1UP,115 meets all electrical specifications (voltage ratings, current, power) and carries automotive AEC-Q101 qualification matching the original part. However, it uses SOD-128 package instead of DO-214AA (SMB). This part is a functional equivalent but requires PCB redesign. Select this part only if layout modification is feasible.

Q: Are RoHS-compliant substitutes acceptable for non-RoHS applications?

A: Yes. RoHS-compliant parts are acceptable in non-RoHS applications. RoHS compliance is a superset requirement; compliant parts meet all material restrictions and are suitable for any application. The original P6SMB13AT3 is RoHS non-compliant, but all listed substitutes are ROHS3 compliant, providing material compliance improvement.

Q: Which substitute should I select for automotive applications?

A: For automotive applications, select parts with automotive grade designation and AEC-Q101 qualification: TPSMB13A (Littelfuse), P6SMB13A (Eaton), SMBJ11AE3/TR13 (Microchip), or PTVS11VP1UP,115 (NXP). TPSMB13A offers the widest operating temperature range (-65 to 175°C) and is the preferred choice.

Q: What is the significance of the voltage ratings (standoff, breakdown, clamping)?

A: Voltage - Reverse Standoff is the maximum voltage the diode blocks without conducting. Voltage - Breakdown (Min) is the minimum voltage at which the diode begins to conduct. Voltage - Clamping (Max) @ Ipp is the maximum voltage across the diode when conducting at peak pulse current. All three parameters must match or be within tight tolerance for functional equivalence. Substitutes with 11.0V standoff are acceptable for 11.1V applications due to the 0.1V margin within typical circuit design tolerances.

Q: Can I substitute a part with a lower operating temperature range?

A: No. Parts with lower maximum operating temperatures are not acceptable substitutes. The original P6SMB13AT3 operates to 150°C (TJ). Substitutes must meet or exceed this temperature rating. Parts with extended ranges (such as TPSMB13A at 175°C) are acceptable and provide additional margin.