SMBG6.5-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG6.5-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for general-purpose transient voltage suppression applications in surface-mount configurations using the DO-215AA (SMB) package. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing design support and procurement.

Substiute Parts

SMBG6.5-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1000SMBG6.5-E3/52 Datasheet

Current PartRFQ

SMBG6.5A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 12291SMBG6.5A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG6.5-E3/52 is determined by the following critical parameters:

• Reverse Standoff Voltage (Vwm): Must be 6.5V to maintain circuit protection thresholds
• Breakdown Voltage (Min): Must be 7.22V or higher to ensure consistent triggering characteristics
• Package Type: Must be DO-215AA (SMB Gull Wing) for mechanical and thermal compatibility
• Mounting Type: Must be Surface Mount to match PCB assembly requirements
• Unidirectional Configuration: Must maintain single-channel Zener topology
• Operating Temperature Range: Must support -55°C ~ 150°C (TJ) for environmental compatibility
• Compliance Standards: Must maintain ROHS3 compliance and MSL 1 rating

The SMBG6.5A-E3/52 meets all substitution criteria while offering improved electrical performance characteristics within the same package footprint.

Parameter Comparison

Engineering Selection Recommendations

The SMBG6.5A-E3/52 is the direct substitute for the obsolete SMBG6.5-E3/52. Both components share identical reverse standoff voltage, breakdown voltage, and operating temperature specifications, ensuring functional compatibility in existing circuit designs.

The substitute part offers the following advantages:

• Active Product Status: The SMBG6.5A-E3/52 maintains active production status, ensuring long-term availability and supply chain continuity
• Improved Peak Pulse Current: The substitute provides 53.6A peak pulse current compared to 48.8A, offering enhanced transient suppression capability
• Lower Clamping Voltage: The substitute achieves 11.2V maximum clamping voltage versus 12.3V, providing tighter voltage regulation during transient events
• Compliance Certification: Both parts maintain ROHS3 compliance and MSL 1 rating, meeting regulatory and environmental requirements
• Identical Packaging: DO-215AA (SMB Gull Wing) package ensures direct mechanical and thermal compatibility without PCB redesign

Frequently Asked Questions (FAQ)

Q: Can the SMBG6.5A-E3/52 be used as a direct replacement for the SMBG6.5-E3/52?

A: Yes. Both parts share identical reverse standoff voltage (6.5V), breakdown voltage (7.22V minimum), operating temperature range (-55°C ~ 150°C), and DO-215AA package configuration. The substitute is electrically and mechanically compatible without circuit modification.

Q: What are the key differences between these two parts?

A: The primary differences are product status and electrical performance. The SMBG6.5A-E3/52 is an active product with higher peak pulse current (53.6A vs. 48.8A) and lower maximum clamping voltage (11.2V vs. 12.3V). These improvements enhance transient suppression performance while maintaining the same protection threshold.

Q: Are there any package or mounting differences?

A: No. Both parts use the DO-215AA (SMB Gull Wing) surface-mount package. No PCB layout modifications are required for substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SMBG6.5-E3/52 and SMBG6.5A-E3/52 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Why is the original part listed as obsolete?

A: The SMBG6.5-E3/52 has been discontinued by the manufacturer. The SMBG6.5A-E3/52 represents the current active equivalent within the TransZorb® series, offering improved specifications and ongoing production support.

Q: What is the significance of the clamping voltage difference?

A: The lower clamping voltage (11.2V vs. 12.3V) in the substitute part indicates more effective voltage regulation during transient suppression events. This provides superior protection for sensitive downstream components while maintaining the same 6.5V reverse standoff threshold.