P6SMBJ170C Equivalent & Substitute Parts

Part Overview

The P6SMBJ170C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional zener diode operates with a reverse standoff voltage of 145V and provides peak pulse power handling of 600W in a compact DO-214AA (SMB) package. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

P6SMBJ170C

Littelfuse Inc.In Stock: 1142P6SMBJ170C Datasheet

Current PartRFQ

P6SMB170CA

Eaton - Electronics DivisionIn Stock: 2789P6SMB170CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMBJ170C is determined by strict equivalence across the following critical parameters:

• Reverse standoff voltage: 145V (Typ)
• Peak pulse current rating: 2.6A
• Peak pulse power rating: 600W
• Package type: DO-214AA (SMB)
• Mounting configuration: Surface mount
• Bidirectional operation: Single channel
• Temperature range: -55°C to 150°C (TJ)

The P6SMB170CA qualifies as a manufacturer-recommended substitute because it maintains identical electrical performance across all critical voltage, current, and power specifications while preserving the same physical package and mounting characteristics. Both parts operate within the same thermal envelope and provide equivalent transient suppression capability.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB170CA is the manufacturer-recommended substitute for the obsolete P6SMBJ170C. Both components maintain identical electrical specifications for reverse standoff voltage, peak pulse current, and power dissipation. The P6SMB170CA is currently in active production status with 2700 units available in inventory, ensuring procurement continuity.

Both parts meet RoHS compliance requirements and operate across the full -55°C to 150°C temperature range. The clamping voltage differential (245.7V vs. 234V) remains within acceptable engineering tolerance for transient suppression applications, with the P6SMB170CA providing slightly lower clamping voltage. Packaging and mounting characteristics are identical, permitting direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB170CA be used as a direct replacement for the P6SMBJ170C?

A: Yes. Both components share identical reverse standoff voltage (145V), peak pulse current (2.6A), peak pulse power (600W), and package type (DO-214AA SMB). The electrical performance and physical footprint are equivalent, enabling direct substitution.

Q: What is the significance of the clamping voltage difference between the two parts?

A: The P6SMBJ170C specifies a maximum clamping voltage of 245.7V, while the P6SMB170CA specifies 234V. Both values fall within the acceptable range for transient voltage suppression in the 145V standoff class. The lower clamping voltage of the P6SMB170CA provides marginally improved transient suppression performance.

Q: Are there any compliance or certification differences?

A: Both parts meet RoHS compliance standards. The P6SMBJ170C carries ROHS3 certification, while the P6SMB170CA carries standard RoHS certification. Both are suitable for applications requiring environmental compliance.

Q: Does the packaging format differ between these parts?

A: The P6SMBJ170C is supplied in standard packaging, while the P6SMB170CA is supplied in Tape & Reel (TR) format. Both use the identical DO-214AA (SMB) component package, ensuring compatibility with existing PCB designs and assembly processes.

Q: What is the product status of each part?

A: The P6SMBJ170C is obsolete and no longer in active production. The P6SMB170CA is in active production status with current inventory availability, making it the recommended choice for new designs and ongoing procurement.