P6SMB11CAT3 Equivalent & Substitute Parts

Part Overview

The P6SMB11CAT3 is a bidirectional transient voltage suppressor (TVS) diode manufactured by onsemi, rated for 600W peak pulse power with an 11V clamping voltage in SMB package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement.

TVS diodes in the SMB package category serve critical roles in transient voltage protection across telecom and general-purpose applications. The obsolete status of the P6SMB11CAT3 requires engineers to evaluate active alternative components that maintain functional compatibility within the same electrical and mechanical parameters.

Substiute Parts

P6SMB11CAT3

onsemiIn Stock: 2121P6SMB11CAT3 Datasheet

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P6SMB11CA

Eaton - Electronics DivisionIn Stock: 2357P6SMB11CA Datasheet

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SM6T10A

STMicroelectronicsIn Stock: 15265SM6T10A Datasheet

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SM6T10CA

STMicroelectronicsIn Stock: 55283SM6T10CA Datasheet

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SM6T12CA

STMicroelectronicsIn Stock: 20457SM6T12CA Datasheet

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SMBJ9.0CA

Taiwan Semiconductor CorporationIn Stock: 23278SMBJ9.0CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB11CAT3 are identified based on the following critical parameters that determine functional equivalence:

• Package / Case: All substitutes must be SMB (DO-214AA) surface mount package
• Type: Zener diode technology
• Power Rating: 600W peak pulse power
• Channels: Bidirectional configuration
• Mounting Type: Surface mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Moisture Sensitivity Level: MSL 1 (Unlimited)

The substitute parts listed below meet these core mechanical and electrical compatibility criteria. Voltage parameters (reverse standoff, breakdown, and clamping) vary within the TVS diode product family, and selection depends on the specific circuit protection requirements of the application.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The P6SMB11CAT3 is obsolete. All listed substitute parts are active products with current manufacturing support and availability. Selection among active alternatives should prioritize:

1. RoHS Compliance: All substitute parts are RoHS compliant (RoHS3 or RoHS Compliant), whereas the original P6SMB11CAT3 is RoHS non-compliant. This is a critical factor for new designs and procurement in regulated markets.

2. Bidirectional Channel Configuration: P6SMB11CA, SM6T10CA, SM6T12CA, and SMBJ9.0CA maintain bidirectional channel configuration matching the original part. SM6T10A is unidirectional and should be selected only if the application circuit specifically requires unidirectional protection.

3. Manufacturer Support: Eaton Electronics Division (P6SMB11CA), STMicroelectronics (SM6T10CA, SM6T12CA), and Taiwan Semiconductor Corporation (SMBJ9.0CA) all provide active product support and documented technical specifications.

4. Voltage Parameters: The clamping voltage varies across substitutes (15.6V to 21.7V). Circuit design requirements determine which voltage rating is appropriate. The original P6SMB11CAT3 specifies 11V clamping; P6SMB11CA at 15.6V provides the closest electrical match.

5. Compliance Certifications: All substitute parts maintain REACH Unaffected status and MSL 1 (Unlimited) moisture sensitivity, ensuring compatibility with standard handling and storage procedures.

Frequently Asked Questions (FAQ)

Q: Can SM6T10A be used as a direct substitute for P6SMB11CAT3?

A: SM6T10A shares the SMB package, 600W power rating, and operating temperature range. However, SM6T10A is unidirectional, while P6SMB11CAT3 is bidirectional. Use SM6T10A only if the circuit application requires unidirectional transient suppression.

Q: What is the primary reason to replace P6SMB11CAT3?

A: The P6SMB11CAT3 is obsolete and RoHS non-compliant. All substitute parts are active products with RoHS compliance, ensuring long-term availability and regulatory alignment.

Q: How do voltage parameters affect substitution?

A: Clamping voltage determines the maximum voltage level at which the TVS diode conducts during a transient event. The original P6SMB11CAT3 specifies 11V clamping. P6SMB11CA (15.6V) provides the closest match. Higher clamping voltages (SM6T10CA at 18.6V, SM6T12CA at 21.7V) offer different protection thresholds and should be selected based on circuit requirements.

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

A: Yes. All substitute parts use SMB (DO-214AA) surface mount package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What is the difference between P6SMB11CA and SM6T10CA?

A: Both are bidirectional SMB TVS diodes with 600W power rating. P6SMB11CA (Eaton) has 15.6V clamping and 39.1A peak pulse current. SM6T10CA (STMicroelectronics) has 18.6V clamping and 215A peak pulse current. Selection depends on the specific transient voltage protection requirements of the circuit.

Q: Do all substitute parts meet the same moisture sensitivity requirements?

A: Yes. All substitute parts are rated MSL 1 (Unlimited), matching the original P6SMB11CAT3 specification. This ensures compatibility with standard PCB assembly and storage conditions.