P6SMB13A-E3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB13A-E3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 11.1V reverse standoff voltage class and provides 18.2V maximum clamping voltage with 33A peak pulse current capability. The device is classified as Active product status and is ROHS3 compliant. Substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative sourcing improves lead times or cost efficiency, or when design requirements allow for functionally equivalent alternatives within the same electrical and mechanical specifications.

Substiute Parts

P6SMB13A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 788P6SMB13A-E3/5B Datasheet

Current PartRFQ

SM6T15A

STMicroelectronicsIn Stock: 21094SM6T15A Datasheet

DirectRFQ

1KSMB13A

Taiwan Semiconductor CorporationIn Stock: 301461KSMB13A Datasheet

MFR RecommendedRFQ

P6SMB13A

Eaton - Electronics DivisionIn Stock: 23892P6SMB13A Datasheet

MFR RecommendedRFQ

P6SMB13A

Eaton - Electronics DivisionIn Stock: 23892P6SMB13A Datasheet

MFR RecommendedRFQ

SMBJ11A

MeritekIn Stock: 50169SMBJ11A Datasheet

MFR RecommendedRFQ

SMBJ11A

MeritekIn Stock: 50169SMBJ11A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB13A-E3/5B is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 11.1V ± tolerance
• Voltage - Clamping (Max) @ Ipp: 18.2V
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Allowable Variation Parameters:

• Current - Peak Pulse (10/1000µs): Must meet or exceed 33A
• Power - Peak Pulse: Must meet or exceed 600W
• Operating Temperature: Must encompass the required operating range or be equivalent
• Manufacturer: Different manufacturers acceptable if electrical specifications align

Substitute parts must maintain identical voltage characteristics (reverse standoff and clamping voltage) and package form factor to ensure direct PCB compatibility and circuit performance equivalence. Peak pulse current and power ratings may exceed the original specification without compromising functionality.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Electrically and Mechanically Equivalent):

1KSMB13A (Taiwan Semiconductor Corporation) and P6SMB13A (Eaton - Electronics Division) are direct substitutes for the P6SMB13A-E3/5B. Both maintain identical reverse standoff voltage (11.1V), breakdown voltage (12.4V), and clamping voltage (18.2V) specifications. Both are packaged in DO-214AA (SMB) surface mount form factor. The 1KSMB13A provides enhanced peak pulse current (54.9A) and power rating (1000W) compared to the original 33A/600W specification, with extended operating temperature range to 175°C. The P6SMB13A from Eaton maintains equivalent electrical performance with 33.5A peak pulse current and 600W power rating. Both alternatives are Active product status with full RoHS compliance.

SMBJ11A (Meritek) is functionally equivalent with minor voltage tolerance variations. The reverse standoff voltage is 11V (compared to 11.1V) and breakdown voltage is 12.2V (compared to 12.4V), representing negligible deviation within typical TVS diode tolerance bands. Clamping voltage remains at 18.2V. Peak pulse current (32.97A) and power rating (600W) are equivalent to the original specification. SMBJ11A is ROHS3 compliant and Active product status.

Non-Equivalent Alternative:

SM6T15A (STMicroelectronics) is not a direct substitute. Although packaged in identical DO-214AA (SMB) form factor, the reverse standoff voltage is 12.8V and clamping voltage is 27.2V, representing significant deviation from the original 11.1V/18.2V specification. This part operates in a different voltage class and would alter circuit protection characteristics. SM6T15A is suitable only for applications requiring higher voltage suppression levels.

Frequently Asked Questions (FAQ)

Q: Can SM6T15A be used as a substitute for P6SMB13A-E3/5B?

A: No. SM6T15A operates at 12.8V reverse standoff and 27.2V clamping voltage, compared to the original 11.1V/18.2V specification. The higher voltage rating places it in a different protection class and would compromise circuit protection performance. Use only when application requirements specifically call for higher voltage suppression.

Q: Are 1KSMB13A and P6SMB13A (Eaton) direct pin-for-pin replacements?

A: Yes. Both parts maintain identical electrical specifications (11.1V reverse standoff, 12.4V breakdown, 18.2V clamping) and are packaged in DO-214AA (SMB) surface mount form factor. They are direct PCB substitutes for the P6SMB13A-E3/5B.

Q: What is the significance of the higher peak pulse current in 1KSMB13A (54.9A vs. 33A)?

A: The 1KSMB13A provides greater transient energy absorption capability (1000W vs. 600W) while maintaining identical voltage protection characteristics. This represents a performance enhancement that does not compromise compatibility. The higher rating provides additional margin for transient suppression without affecting circuit operation.

Q: Does SMBJ11A meet the voltage specifications of P6SMB13A-E3/5B?

A: SMBJ11A operates at 11V reverse standoff and 12.2V breakdown voltage, compared to the original 11.1V/12.4V specification. These variations fall within standard TVS diode tolerance ranges and do not materially affect circuit protection performance. Clamping voltage remains at 18.2V, maintaining functional equivalence.

Q: Are all substitute parts ROHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance or equivalent RoHS certification, matching the environmental compliance status of the original P6SMB13A-E3/5B.

Q: Can substitute parts be mixed on the same PCB assembly?

A: Yes. All substitute parts are mechanically and electrically compatible with the original design. Mixed sourcing from multiple manufacturers is permissible provided each part meets the specified electrical and mechanical parameters.