SMBG9.0-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBG9.0-E3/5B 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 9V reverse standoff voltage with a 16.9V maximum clamping voltage and 35.5A peak pulse current capability in a surface-mount DO-215AA (SMB) package. The part is classified as obsolete, making identification of compatible alternatives essential for ongoing design support and procurement.

Substiute Parts

SMBG9.0-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 958SMBG9.0-E3/5B Datasheet

Current PartRFQ

SMBG9.0A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1233SMBG9.0A-E3/5B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBG9.0-E3/5B is determined by the following critical parameters:

• Reverse Standoff Voltage: 9V (must match)
• Breakdown Voltage (Min): 10V (must match)
• Package Type: DO-215AA, SMB Gull Wing (must match for PCB compatibility)
• Mounting Type: Surface Mount (must match)
• Temperature Range: -55°C ~ 150°C (must match or exceed)
• RoHS Compliance: ROHS3 Compliant (must maintain)

The SMBG9.0A-E3/5B qualifies as a direct substitute because it maintains identical reverse standoff voltage, breakdown voltage, package configuration, mounting type, temperature range, and RoHS compliance status. Variations in clamping voltage (15.4V vs. 16.9V) and peak pulse current (39A vs. 35.5A) remain within acceptable tolerance ranges for general-purpose TVS applications sharing the same voltage protection class.

Parameter Comparison

Engineering Selection Recommendations

The SMBG9.0A-E3/5B is the direct substitute for the obsolete SMBG9.0-E3/5B. Both components are manufactured by Vishay General Semiconductor - Diodes Division within the TransZorb® series and maintain identical electrical protection characteristics for the 9V voltage class. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), satisfying regulatory and environmental requirements. The substitute part's lower clamping voltage (15.4V) and higher peak pulse current (39A) represent improved performance characteristics within the same protection class, making it functionally superior for general-purpose transient suppression applications.

Frequently Asked Questions (FAQ)

Q: Can the SMBG9.0A-E3/5B replace the SMBG9.0-E3/5B in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (9V), breakdown voltage (10V), package configuration (DO-215AA SMB), and operating temperature range (-55°C ~ 150°C). The substitute part is pin-compatible and functionally equivalent for general-purpose TVS applications.

Q: What is the significance of the different clamping voltages (16.9V vs. 15.4V)?

A: The clamping voltage represents the maximum voltage across the diode during transient suppression. The SMBG9.0A-E3/5B's lower clamping voltage (15.4V) provides improved protection performance compared to the original part's 16.9V specification, while maintaining the same 9V standoff voltage class.

Q: Are there packaging differences between these parts?

A: Both parts use the DO-215AA (SMB Gull Wing) surface-mount package. The main part is supplied in standard packaging, while the substitute is available in Tape & Reel (TR) format. Both are compatible with automated assembly processes and PCB layouts designed for the SMB package footprint.

Q: Why is the original part marked as obsolete?

A: The SMBG9.0-E3/5B is classified as obsolete by the manufacturer. The SMBG9.0A-E3/5B represents the current active production alternative within the same voltage protection class and package family.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. They satisfy identical regulatory and environmental requirements for industrial and commercial applications.