SMBG45-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG45-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for general-purpose transient voltage suppression applications with a 45V reverse standoff voltage rating and 7.5A peak pulse current capability in a DO-215AA (SMB) package.

The SMBG45-E3/52 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

SMBG45-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1114SMBG45-E3/52 Datasheet

Current PartRFQ

SMBG45A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 853SMBG45A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG45-E3/52 is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 45V and breakdown voltage minimum of 50V
• Package Compatibility: DO-215AA (SMB Gull Wing) surface mount package
• Electrical Performance: Peak pulse current capability and clamping voltage characteristics
• Thermal Range: Operating temperature range of -55°C to 150°C (TJ)
• Device Type: Unidirectional Zener TVS diode configuration

The SMBG45A-E3/52 meets all substitution criteria. Both devices share identical voltage ratings, package specifications, thermal operating range, and device type. The substitute part maintains the same base product number (SMBG45) and is manufactured by the same supplier using the same package technology.

Parameter Comparison

Engineering Selection Recommendations

The SMBG45A-E3/52 is the direct substitute for the obsolete SMBG45-E3/52. Both components are ROHS3 compliant, REACH unaffected, and classified under the same ECCN and HTSUS codes, ensuring regulatory and compliance alignment.

The substitute part is currently in active production status with confirmed inventory availability, whereas the main part is obsolete. The SMBG45A-E3/52 maintains identical voltage ratings, thermal operating range, and package specifications. The clamping voltage is lower (72.7V versus 80.3V) and peak pulse current is higher (8.3A versus 7.5A), both of which represent improved performance characteristics for transient suppression applications within the 45V rating class.

Selection of the SMBG45A-E3/52 is supported by identical compliance certifications, matching package technology, and active product status ensuring long-term supply chain viability.

Frequently Asked Questions (FAQ)

Q: Can the SMBG45A-E3/52 be used as a direct replacement for the SMBG45-E3/52?

A: Yes. Both devices share identical reverse standoff voltage (45V), breakdown voltage (50V minimum), operating temperature range (-55°C to 150°C), and DO-215AA package specifications. The substitute part meets all electrical and mechanical compatibility requirements for direct substitution.

Q: What are the differences between the main part and the substitute?

A: The SMBG45A-E3/52 has a lower clamping voltage (72.7V versus 80.3V) and higher peak pulse current (8.3A versus 7.5A). Both maintain 600W peak pulse power rating. The substitute part is in active production status, whereas the main part is obsolete.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. Moisture sensitivity level is 1 (Unlimited) for both devices.

Q: Is the DO-215AA package the same for both parts?

A: Yes. Both the SMBG45-E3/52 and SMBG45A-E3/52 use the DO-215AA (SMB Gull Wing) surface mount package with identical mechanical and electrical interface specifications.

Q: Why is the main part listed as obsolete?

A: The SMBG45-E3/52 has reached end-of-life status. The SMBG45A-E3/52 is the active equivalent part maintained in current production by Vishay General Semiconductor - Diodes Division.