P6SMBJ9.1C Equivalent & Substitute Parts

Part Overview

The P6SMBJ9.1C 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 and 14.07V maximum clamping voltage with 45.5A peak pulse current capability in a DO-214AA (SMB) package.

The P6SMBJ9.1C is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

P6SMBJ9.1C

Littelfuse Inc.In Stock: 863P6SMBJ9.1C Datasheet

Current PartRFQ

P6SMB9.1CA

Taiwan Semiconductor CorporationIn Stock: 30314P6SMB9.1CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMBJ9.1C is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7.78V
• Voltage - Clamping (Max) @ Ipp: Must remain within acceptable operating margins
• Current - Peak Pulse (10/1000µs): Minimum 45.5A
• Package / Case: DO-214AA (SMB) surface mount
• Operating Temperature Range: -55°C to 150°C (TJ)
• RoHS Compliance: ROHS3 Compliant

The P6SMB9.1CA qualifies as a direct substitute based on matching reverse standoff voltage (7.78V), identical package type (DO-214AA/SMB), equivalent power rating (600W), and compatible operating temperature range. The clamping voltage differential (13.4V vs. 14.07V) and peak pulse current increase (47A vs. 45.5A) remain within acceptable design tolerances for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB9.1CA is an active-status substitute for the obsolete P6SMBJ9.1C. Both components maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1 - Unlimited), ensuring regulatory and environmental compatibility.

The P6SMB9.1CA offers improved availability (30,300 pcs in stock vs. 815 pcs) and active product status, making it the preferred selection for new designs and production continuity. The substitute maintains the same reverse standoff voltage (7.78V), package footprint (DO-214AA/SMB), and thermal operating range (-55°C to 150°C TJ).

Frequently Asked Questions (FAQ)

Q: Can the P6SMB9.1CA directly replace the P6SMBJ9.1C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (7.78V), package type (DO-214AA/SMB), power rating (600W), and operating temperature range (-55°C to 150°C TJ). The substitute's lower clamping voltage (13.4V vs. 14.07V) and higher peak pulse current (47A vs. 45.5A) are compatible with general-purpose TVS applications.

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

A: The P6SMBJ9.1C clamps at 14.07V maximum, while the P6SMB9.1CA clamps at 13.4V maximum. This 0.67V difference remains within acceptable design margins for overvoltage protection circuits and does not affect functional compatibility.

Q: Are there packaging differences between these components?

A: No. Both the P6SMBJ9.1C and P6SMB9.1CA use the DO-214AA (SMB) surface-mount package with identical footprints and mounting requirements.

Q: Why is the P6SMBJ9.1C obsolete?

A: The P6SMBJ9.1C is classified as obsolete by Littelfuse Inc. The P6SMB9.1CA represents the active equivalent from Taiwan Semiconductor Corporation and is recommended for all new applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent regulatory and environmental compliance.