Equivalent & Substitute Parts for P6SMB11 TVS Diode

Part Overview

The P6SMB11 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection in surface-mount applications. The device features a 9.4V reverse standoff voltage and 16.38V maximum clamping voltage with 39.1A peak pulse current capability in a DO-214AA (SMB) package.

The P6SMB11 is classified as obsolete. Equivalent and substitute parts are available from active product lines that maintain the same electrical and mechanical specifications, ensuring continued design support and component availability.

Substiute Parts

P6SMB11

Littelfuse Inc.In Stock: 976P6SMB11 Datasheet

Current PartRFQ

P6SMB11A

Eaton - Electronics DivisionIn Stock: 15183P6SMB11A Datasheet

MFR RecommendedRFQ

P6SMB11A

Eaton - Electronics DivisionIn Stock: 15183P6SMB11A Datasheet

MFR RecommendedRFQ

SMBJP6KE11A-TP

Micro Commercial CoIn Stock: 6927SMBJP6KE11A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMB11 is determined by the following critical parameters:

• Reverse Standoff Voltage: 9.4V (Typ)
• Peak Pulse Current: 39.1A (10/1000µs)
• Peak Pulse Power: 600W
• Package Type: DO-214AA (SMB) surface mount
• Diode Type: Unidirectional Zener

Substitute parts must maintain identical reverse standoff voltage, peak pulse current rating, and package configuration. Variations in clamping voltage and breakdown voltage within the specified range do not preclude substitution, as these parameters remain within acceptable operating margins for transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Both P6SMB11A (Eaton) and SMBJP6KE11A-TP (Micro Commercial Co) are qualified substitutes for the obsolete P6SMB11. Selection between these alternatives is based on the following criteria:

P6SMB11A (Eaton - Electronics Division): This part maintains active product status with established supply chain availability. It is RoHS compliant and suitable for telecom applications. The clamping voltage of 15.6V is lower than the original P6SMB11 (16.38V), providing improved transient suppression performance within the same electrical class.

SMBJP6KE11A-TP (Micro Commercial Co): This part is also active with established availability. It offers an extended operating temperature range of -55°C to 175°C compared to the original -55°C to 150°C specification, providing additional thermal margin for high-temperature environments. ROHS3 compliance and REACH unaffected status are confirmed.

Both substitutes maintain identical reverse standoff voltage (9.4V), peak pulse current (39.1A), and power dissipation (600W) specifications. The choice between them depends on application-specific requirements regarding temperature range and clamping voltage performance.

Frequently Asked Questions (FAQ)

Q: Can P6SMB11A and SMBJP6KE11A-TP be used interchangeably with P6SMB11?

A: Yes. Both parts maintain the critical electrical parameters: 9.4V reverse standoff voltage, 39.1A peak pulse current, and 600W peak pulse power. All three parts use identical DO-214AA (SMB) surface-mount packaging, ensuring mechanical and electrical compatibility.

Q: What is the significance of the different clamping voltages (16.38V vs 15.6V)?

A: The clamping voltage represents the maximum voltage across the TVS diode during transient suppression. The lower clamping voltage of the substitute parts (15.6V) indicates more aggressive transient suppression, which is beneficial for protecting sensitive downstream components. This difference does not prevent substitution; it represents an improvement in performance.

Q: Are there temperature range considerations for substitution?

A: The original P6SMB11 operates from -55°C to 150°C. The P6SMB11A maintains this range, while SMBJP6KE11A-TP extends to 175°C. For applications operating above 150°C, SMBJP6KE11A-TP is the appropriate choice. For standard temperature ranges, both substitutes are equivalent.

Q: Do all substitute parts meet RoHS compliance requirements?

A: Yes. P6SMB11A is RoHS compliant, and SMBJP6KE11A-TP is ROHS3 compliant. Both meet current environmental and regulatory standards for electronic component manufacturing.

Q: What packaging formats are available for these substitutes?

A: P6SMB11A is supplied in Tape & Reel (TR) format. SMBJP6KE11A-TP is also supplied in Tape & Reel (TR) format. Both are suitable for automated assembly processes.