SMBG33A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBG33A-M3/5B 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. The part is currently active in production and widely available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, procurement preferences, or design flexibility needs.

Substiute Parts

SMBG33A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 739SMBG33A-M3/5B Datasheet

Current PartRFQ

SMBG33A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 12256SMBG33A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG33A-M3/5B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 33V
• Voltage - Breakdown (Min): 36.7V
• Voltage - Clamping (Max) @ Ipp: 53.3V
• Current - Peak Pulse (10/1000µs): 11.3A
• Power - Peak Pulse: 600W
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Series: TransZorb®
• Type: Zener
• Unidirectional Channels: 1

The substitute part SMBG33A-E3/52 maintains identical electrical specifications and package configuration, ensuring direct functional compatibility in circuit applications. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share the same base product number (SMBG33), confirming their interchangeability within the same product family.

Parameter Comparison

Engineering Selection Recommendations

Both SMBG33A-M3/5B and SMBG33A-E3/52 are active production components with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. Selection between these parts should be based on application-specific operating temperature requirements. The SMBG33A-M3/5B supports an extended operating temperature range of -65°C to 175°C, while the SMBG33A-E3/52 operates within -55°C to 150°C. For applications requiring operation at temperatures below -55°C or above 150°C, the SMBG33A-M3/5B is the appropriate choice. For standard industrial and commercial temperature ranges, either part provides equivalent electrical performance and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Are SMBG33A-M3/5B and SMBG33A-E3/52 electrically interchangeable?

A: Yes. Both parts share identical electrical specifications including reverse standoff voltage (33V), breakdown voltage (36.7V minimum), clamping voltage (53.3V maximum), peak pulse current (11.3A), and peak pulse power (600W). They are functionally equivalent for circuit applications.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts use the DO-215AA (SMB Gull Wing) package with surface-mount configuration, ensuring identical footprint and soldering requirements.

Q: What is the primary difference between these substitute parts?

A: The operating temperature range differs. SMBG33A-M3/5B operates from -65°C to 175°C, while SMBG33A-E3/52 operates from -55°C to 150°C. Select based on your application's temperature requirements.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component procurement and use.

Q: What packaging format is used for these TVS diodes?

A: Both parts are supplied in Tape & Reel (TR) format for automated assembly processes, with DO-215AA (SMB Gull Wing) package configuration.