SMBG40A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBG40A-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 to provide alternative sourcing options when the primary part number becomes unavailable or when procurement requirements necessitate alternative manufacturer packaging or tape configurations.

Substiute Parts

SMBG40A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 923SMBG40A-M3/5B Datasheet

Current PartRFQ

SMBG40A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 4060SMBG40A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG40A-M3/5B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 40V
• Voltage - Breakdown (Min): 44.4V
• Voltage - Clamping (Max) @ Ipp: 64.5V
• Current - Peak Pulse (10/1000µs): 9.3A
• Power - Peak Pulse: 600W
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Series: TransZorb®
• Type: Zener, Unidirectional

The substitute part SMBG40A-E3/52 maintains identical electrical performance specifications and package configuration. The difference between the main part and substitute lies in the tape reel configuration (M3/5B versus E3/52), which represents alternative packaging formats from the same manufacturer. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and carry the same base product number SMBG40.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBG40A-M3/5B and SMBG40A-E3/52 are active production parts from Vishay General Semiconductor - Diodes Division with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on procurement requirements and tape reel configuration availability.

The SMBG40A-M3/5B supports an extended operating temperature range of -65°C to 175°C, making it suitable for applications requiring operation at lower ambient temperatures or higher junction temperatures. The SMBG40A-E3/52 operates within -55°C to 150°C, which covers standard industrial and commercial temperature ranges.

Both parts are electrically and mechanically identical in all critical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and peak pulse power. The DO-215AA SMB Gull Wing package ensures compatibility with standard surface-mount assembly processes and PCB layouts designed for this footprint.

Frequently Asked Questions (FAQ)

Q: Can SMBG40A-E3/52 be used as a direct replacement for SMBG40A-M3/5B?

A: Yes, for applications operating within the -55°C to 150°C temperature range. Both parts share identical electrical specifications, package configuration, and mounting type. The difference is the tape reel format (M3/5B versus E3/52), which affects procurement and handling but not circuit performance.

Q: What is the difference between M3/5B and E3/52 tape configurations?

A: These designations represent different tape reel packaging formats from Vishay. Both are standard tape and reel (TR) configurations suitable for automated assembly. The specific format may affect equipment compatibility and procurement lead times but does not impact the component's electrical or mechanical characteristics.

Q: Are there temperature limitations when substituting SMBG40A-E3/52 for SMBG40A-M3/5B?

A: Yes. The SMBG40A-E3/52 has a maximum operating temperature of 150°C (TJ), compared to 175°C (TJ) for the SMBG40A-M3/5B. Applications requiring junction temperatures above 150°C must use the SMBG40A-M3/5B.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SMBG40A-M3/5B and SMBG40A-E3/52 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the DO-215AA package?

A: DO-215AA, also known as SMB Gull Wing, is a surface-mount diode package with two leads. It is the standard package for small-signal and transient voltage suppressor diodes in this voltage and current class.