P6SMBJ300C Equivalent & Substitute Parts

Part Overview

The P6SMBJ300C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This component features a 256V reverse standoff voltage with a maximum clamping voltage of 434.7V at peak pulse current. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

P6SMBJ300C

Littelfuse Inc.In Stock: 1101P6SMBJ300C Datasheet

Current PartRFQ

P6SMB300CA

Eaton - Electronics DivisionIn Stock: 6238P6SMB300CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMBJ300C is determined by the following critical parameters:

• Reverse standoff voltage matching at 256V typical
• Peak pulse current capability of 1.5A minimum
• Peak pulse power rating of 600W minimum
• Clamping voltage performance within acceptable operating range
• Surface mount package compatibility (DO-214AA/SMB form factor)
• Operating temperature range of -55°C to 150°C

The P6SMB300CA qualifies as a direct substitute based on matching all critical electrical parameters and package specifications. Both components maintain identical reverse standoff voltage, peak pulse current, and power dissipation ratings, with clamping voltage performance within the acceptable range for this application category.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB300CA is the manufacturer-recommended substitute for the obsolete P6SMBJ300C. Both components share identical electrical performance specifications for reverse standoff voltage, peak pulse current, and power dissipation. The substitute maintains the same surface mount package format, ensuring direct PCB compatibility without layout modifications.

The P6SMB300CA is currently in active production status, providing supply chain continuity for applications requiring this voltage suppression performance level. The substitute exhibits a lower maximum clamping voltage (414V versus 434.7V), which represents improved performance within the specified operating parameters.

RoHS compliance differs between the two components. The original P6SMBJ300C is RoHS3 compliant, while the P6SMB300CA is RoHS non-compliant. This distinction must be evaluated against specific application requirements and regulatory obligations.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB300CA be used as a direct replacement for the P6SMBJ300C?

A: Yes. Both components maintain identical reverse standoff voltage (256V), peak pulse current (1.5A), and peak pulse power (600W) specifications. The surface mount package format is identical, enabling direct PCB substitution without layout changes.

Q: What is the difference in clamping voltage between these parts?

A: The P6SMBJ300C has a maximum clamping voltage of 434.7V, while the P6SMB300CA is rated at 414V. The lower clamping voltage of the substitute represents improved voltage suppression performance and remains within acceptable operating parameters for this application category.

Q: Are there package compatibility concerns?

A: No. Both components use the DO-214AA (SMB) surface mount package. Footprint, lead spacing, and mounting requirements are identical, allowing direct board-level substitution.

Q: How do the RoHS compliance statuses differ?

A: The P6SMBJ300C is RoHS3 compliant, while the P6SMB300CA is RoHS non-compliant. Applications subject to RoHS regulations must account for this difference in material composition and environmental restrictions.

Q: What is the operating temperature range for both components?

A: Both the P6SMBJ300C and P6SMB300CA operate across the identical temperature range of -55°C to 150°C (junction temperature), ensuring thermal performance consistency across applications.