SMBJ15A/54 Equivalent & Substitute Parts

Part Overview

The SMBJ15A/54 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates as a Zener-type TVS device in the TransZorb® series, designed for general-purpose transient voltage suppression applications. The part is currently in active production status with 863 pieces available in new original inventory. TVS diodes like the SMBJ15A/54 are essential in circuit protection applications where transient voltage events must be rapidly clamped to safe levels, making equivalent and substitute parts necessary for supply chain flexibility and design optimization.

Substiute Parts

SMBJ15A/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 882SMBJ15A/54 Datasheet

Current PartRFQ

SMBJ15A

EVVO SemiIn Stock: 35459SMBJ15A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ15A/54 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Breakdown (Min): 16.7V
• Voltage - Clamping (Max) @ Ipp: 24.4V
• Current - Peak Pulse (10/1000µs): 24.6A
• Power - Peak Pulse: 600W
• Type: Zener
• Unidirectional Channels: 1

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: DO-214AA or equivalent SMB footprint

Application Parameters (Must Match):

• Category: Transient Voltage Suppressors (TVS)
• Applications: General Purpose

The SMBJ15A manufactured by EVVO Semi meets all substitution criteria, providing electrical and mechanical compatibility with the original Vishay component while maintaining identical performance specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBJ15A/54 (Vishay) and SMBJ15A (EVVO Semi) are active production components with identical electrical performance specifications. Selection between these parts should be based on the following factors:

Compliance and Certification: The EVVO Semi SMBJ15A carries ROHS3 compliance certification and Moisture Sensitivity Level (MSL) 1 rating, indicating unrestricted moisture handling. The Vishay SMBJ15A/54 is RoHS non-compliant. For applications requiring RoHS compliance, the EVVO Semi substitute is the appropriate selection.

Inventory and Availability: The EVVO Semi SMBJ15A offers significantly higher inventory availability at 35,400 pieces compared to 863 pieces for the Vishay component, providing supply chain advantages for high-volume production.

Package Considerations: Both components use compatible SMB surface-mount footprints (DO-214AA vs. DO-214AC). The EVVO Semi part operates across an extended temperature range (-65°C to 150°C) compared to the Vishay part (-55°C to 150°C), providing additional thermal margin in cold-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the EVVO Semi SMBJ15A directly replace the Vishay SMBJ15A/54 in existing designs?

A: Yes. Both components share identical electrical specifications including reverse standoff voltage (15V), breakdown voltage (16.7V), clamping voltage (24.4V), peak pulse current (24.6A), and peak pulse power (600W). The SMB surface-mount footprints are mechanically compatible.

Q: What is the difference between DO-214AA and DO-214AC packages?

A: Both designations refer to SMB surface-mount packages with compatible footprints suitable for the same PCB layouts. The SMBJ15A/54 uses DO-214AA while the EVVO Semi SMBJ15A uses DO-214AC; both are functionally equivalent for this application.

Q: Does the extended operating temperature range of the EVVO Semi part affect performance?

A: The EVVO Semi SMBJ15A operates from -65°C to 150°C compared to -55°C to 150°C for the Vishay part. This extended lower temperature limit provides additional operational margin but does not alter the electrical performance specifications within the overlapping temperature range.

Q: Is RoHS compliance a factor in selecting between these parts?

A: Yes. The EVVO Semi SMBJ15A is ROHS3 compliant, while the Vishay SMBJ15A/54 is RoHS non-compliant. Applications subject to RoHS regulatory requirements must use the EVVO Semi substitute.

Q: Are there any moisture sensitivity considerations?

A: The EVVO Semi SMBJ15A carries MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. This simplifies handling and storage procedures compared to higher MSL-rated components.