P6SMB9.1C Equivalent & Substitute Parts

Part Overview

The P6SMB9.1C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface mount applications. This component features a 7.78V reverse standoff voltage with a 14.07V maximum clamping voltage and 45.5A peak pulse current capability in a DO-214AA (SMB) package. The product is currently obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

P6SMB9.1C

Littelfuse Inc.In Stock: 1033P6SMB9.1C Datasheet

Current PartRFQ

P6SMB9.1CA

Taiwan Semiconductor CorporationIn Stock: 30314P6SMB9.1CA Datasheet

MFR RecommendedRFQ

P6SMB9.1CA

Taiwan Semiconductor CorporationIn Stock: 30314P6SMB9.1CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB9.1C is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Reverse standoff voltage: 7.78V (Typ)
• Breakdown voltage minimum: ≥8.19V
• Clamping voltage maximum: ≤14.07V @ Ipp
• Peak pulse current: ≥45.5A (10/1000µs)
• Peak pulse power: 600W
• Package: DO-214AA (SMB) surface mount
• Bidirectional channels: 1
• Operating temperature range: -55°C to 150°C (TJ)
• Type: Zener diode

The P6SMB9.1CA from Taiwan Semiconductor Corporation meets all specified electrical and mechanical requirements and is classified as an active product with equivalent performance characteristics within the defined parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB9.1CA is a direct functional equivalent to the obsolete P6SMB9.1C. Both components share identical reverse standoff voltage, peak pulse power rating, operating temperature range, and package configuration. The P6SMB9.1CA demonstrates superior performance in clamping voltage (13.4V vs. 14.07V) and peak pulse current (47A vs. 45.5A), providing enhanced transient suppression capability within the same thermal and spatial constraints.

The P6SMB9.1CA is manufactured by Taiwan Semiconductor Corporation and maintains active product status with full ROHS3 compliance and REACH unaffected designation. Supply availability is confirmed at 30,300 pieces in stock. This substitute is suitable for direct replacement in new designs and field service applications where the P6SMB9.1C is no longer procurable.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB9.1CA replace the P6SMB9.1C in existing designs?

A: Yes. The P6SMB9.1CA meets or exceeds all critical electrical parameters of the P6SMB9.1C, including reverse standoff voltage, peak pulse power, and operating temperature range. The identical DO-214AA (SMB) package ensures mechanical compatibility without PCB redesign.

Q: What are the key differences between these parts?

A: The P6SMB9.1CA exhibits lower maximum clamping voltage (13.4V vs. 14.07V) and higher peak pulse current (47A vs. 45.5A). Both differences represent improved performance characteristics. The P6SMB9.1CA is an active product, whereas the P6SMB9.1C is obsolete.

Q: Are there packaging differences?

A: The P6SMB9.1C is supplied in standard packaging, while the P6SMB9.1CA is supplied in Tape & Reel (TR) format. Both use the DO-214AA (SMB) package configuration suitable for automated surface mount assembly.

Q: What compliance certifications apply to the substitute?

A: The P6SMB9.1CA is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

Q: Is the P6SMB9.1CA the only available substitute?

A: Based on the provided substitute list, the P6SMB9.1CA is the identified equivalent part meeting all specified electrical and mechanical parameters for the P6SMB9.1C.