SMBG7.5-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG7.5-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for general-purpose transient protection applications. This component features a 7.5V reverse standoff voltage with a 14.3V maximum clamping voltage and 42A peak pulse current capability in a surface-mount DO-215AA (SMB) package.

The SMBG7.5-E3/52 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this TVS diode specification.

Substiute Parts

SMBG7.5-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1005SMBG7.5-E3/52 Datasheet

Current PartRFQ

SMBG7.5A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 12412SMBG7.5A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS diodes is determined by strict alignment of electrical and mechanical parameters. The SMBG7.5-E3/52 can be substituted with parts meeting the following criteria:

Critical Matching Parameters:

• Reverse Standoff Voltage: 7.5V (Typ)
• Breakdown Voltage (Min): 8.33V
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C (TJ)
• RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: Within acceptable circuit design margins
• Current - Peak Pulse (10/1000µs): Equal to or greater than specified value
• Power - Peak Pulse: Equal to or greater than specified value
• Product Status: Active parts preferred for new designs; obsolete parts acceptable for legacy support

The SMBG7.5A-E3/52 meets all critical matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The SMBG7.5A-E3/52 is the qualified substitute for the obsolete SMBG7.5-E3/52. Both parts are manufactured by Vishay General Semiconductor - Diodes Division within the TransZorb® series and share identical reverse standoff and breakdown voltage specifications.

Selection Basis:

The SMBG7.5A-E3/52 maintains full electrical compatibility with the original part across all critical parameters. The lower clamping voltage (12.9V versus 14.3V) provides improved transient suppression performance. The higher peak pulse current rating (46.5A versus 42A) offers additional margin for surge protection applications.

The substitute part carries Active product status, ensuring long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, supporting equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the SMBG7.5A-E3/52 be used as a direct replacement for the SMBG7.5-E3/52?

A: Yes. Both parts share identical reverse standoff voltage (7.5V), breakdown voltage (8.33V), operating temperature range (-55 to 150°C), and package configuration (DO-215AA, SMB). The substitute part is electrically and mechanically compatible for direct substitution.

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

A: The SMBG7.5-E3/52 has a maximum clamping voltage of 14.3V, while the SMBG7.5A-E3/52 has a maximum clamping voltage of 12.9V. The lower clamping voltage of the substitute part provides faster transient suppression and tighter voltage regulation during surge events.

Q: Does the higher peak pulse current rating of the substitute part affect circuit compatibility?

A: No. The SMBG7.5A-E3/52 peak pulse current rating of 46.5A exceeds the original specification of 42A. This provides additional design margin and does not compromise circuit performance or compatibility.

Q: Are there any packaging or handling differences between these parts?

A: Both parts use identical DO-215AA (SMB Gull Wing) surface-mount packages with MSL 1 (Unlimited) moisture sensitivity ratings. Handling, storage, and assembly processes are equivalent.

Q: Why is the original part obsolete?

A: The SMBG7.5-E3/52 is classified as obsolete by the manufacturer. The SMBG7.5A-E3/52 is the active equivalent, ensuring continued availability and support for applications requiring 7.5V TVS diode protection.

Q: Are both parts RoHS compliant?

A: Yes. Both the SMBG7.5-E3/52 and SMBG7.5A-E3/52 are ROHS3 compliant and meet equivalent environmental and regulatory requirements.