SMBG43C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG43C-E3/52 is a transient voltage suppressor (TVS) diode manufactured by 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 43V reverse standoff voltage rating and 76.7V maximum clamping voltage. The device is currently classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

SMBG43C-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1081SMBG43C-E3/52 Datasheet

Current PartRFQ

SMBG43CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1105SMBG43CA-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG43C-E3/52 is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 43V and breakdown voltage minimum of 47.8V must be maintained
• Package Compatibility: DO-215AA (SMB Gull Wing) surface-mount package required for PCB layout compatibility
• Electrical Performance: Peak pulse current and clamping voltage characteristics must support the application's transient suppression requirements
• Environmental Compliance: RoHS3 compliance and MSL rating must meet regulatory and manufacturing requirements
• Thermal Range: Operating temperature range of -55°C to 150°C must be supported

The SMBG43CA-E3/52 qualifies as a direct substitute based on identical voltage ratings, package type, and compliance certifications, with the distinction of active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The SMBG43CA-E3/52 is the qualified substitute for the obsolete SMBG43C-E3/52. Both components share identical voltage ratings, package specifications, and compliance certifications. The substitute part offers active product status with confirmed inventory availability, ensuring long-term procurement viability.

The SMBG43CA-E3/52 demonstrates improved peak pulse current capability (8.6A versus 7.8A) and lower maximum clamping voltage (69.4V versus 76.7V), both of which represent enhanced transient suppression performance within the same electrical class. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, supporting equivalent manufacturing and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the SMBG43CA-E3/52 be used as a direct replacement for the SMBG43C-E3/52?

A: Yes. Both components share identical reverse standoff voltage (43V), breakdown voltage (47.8V minimum), operating temperature range (-55°C to 150°C), and DO-215AA package specifications. The substitute part is electrically and mechanically compatible.

Q: What is the significance of the lower clamping voltage in the substitute part?

A: The SMBG43CA-E3/52 exhibits a maximum clamping voltage of 69.4V compared to 76.7V in the original part. This represents improved transient suppression performance, as lower clamping voltage reduces voltage stress on protected circuitry during transient events.

Q: Why is the original part classified as obsolete?

A: Product obsolescence reflects manufacturer discontinuation decisions. The SMBG43CA-E3/52 remains in active production and provides equivalent functionality with enhanced specifications, making it the appropriate long-term solution for new designs and ongoing support.

Q: Are there packaging differences between these parts?

A: Both parts use identical DO-215AA (SMB Gull Wing) surface-mount packaging. PCB layout and assembly processes require no modification when transitioning from the original to the substitute part.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SMBG43C-E3/52 and SMBG43CA-E3/52 are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting equivalent regulatory and manufacturing requirements.