SMBJ7.5A/54 Equivalent & Substitute Parts

Part Overview

The SMBJ7.5A/54 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage protection in surface-mount applications. The device features a 7.5V reverse standoff voltage with a 12.9V maximum clamping voltage and peak pulse current rating of 46.5A. The part is currently in active production status with 870 units available in inventory. Identifying equivalent substitute parts is necessary to ensure supply chain continuity, optimize procurement costs, and maintain design flexibility across manufacturing batches.

Substiute Parts

SMBJ7.5A/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 971SMBJ7.5A/54 Datasheet

Current PartRFQ

SMBJ7.5A

MDDIn Stock: 22756SMBJ7.5A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ7.5A/54 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7.5V
• Voltage - Clamping (Max) @ Ipp: 12.9V
• Current - Peak Pulse (10/1000µs): ≥ 46.5A
• Package / Case: DO-214AA / SMB
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

The substitute part SMBJ7.5A from MDD meets all electrical and mechanical requirements within the specified tolerances. Both parts share identical voltage ratings, equivalent peak pulse current capability, and compatible packaging specifications. The substitution is valid based on functional equivalence and physical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ7.5A from MDD is a direct functional equivalent to the SMBJ7.5A/54. Both parts maintain identical voltage specifications and equivalent current ratings within 0.2% variance. The MDD substitute offers ROHS3 compliance and Moisture Sensitivity Level (MSL) 1 rating, providing enhanced environmental compliance compared to the Vishay part, which is RoHS non-compliant. The operating temperature range of the MDD part is -50°C to 150°C, which is 5°C narrower at the lower bound than the Vishay specification of -55°C to 150°C. Selection between these parts should be based on compliance requirements and minimum operating temperature constraints of the application.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ7.5A (MDD) be used as a direct replacement for SMBJ7.5A/54 (Vishay)?

A: Yes. Both parts are electrically equivalent with identical reverse standoff voltage (7.5V), clamping voltage (12.9V), and equivalent peak pulse current ratings (46.5A vs. 46.6A). Physical packaging is identical (DO-214AA / SMB). The substitution is valid for general-purpose transient voltage suppression applications.

Q: What is the difference in operating temperature range between these parts?

A: The Vishay SMBJ7.5A/54 operates from -55°C to 150°C, while the MDD SMBJ7.5A operates from -50°C to 150°C. The MDD part has a 5°C higher minimum operating temperature. Applications requiring operation below -50°C must use the Vishay part.

Q: Are there compliance differences between these parts?

A: Yes. The MDD SMBJ7.5A is ROHS3 compliant with MSL 1 rating. The Vishay SMBJ7.5A/54 is RoHS non-compliant. Applications subject to RoHS requirements must use the MDD substitute.

Q: Do these parts have the same packaging format?

A: Both parts use DO-214AA / SMB surface-mount packaging. The MDD part is supplied in Tape & Reel (TR) format, while the Vishay part packaging format is not specified. Both are compatible with standard SMB footprints.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by: reverse standoff voltage (7.5V), clamping voltage (12.9V), peak pulse current (≥46.5A), package type (DO-214AA/SMB), mounting type (surface mount), and channel configuration (unidirectional, 1 channel).