SMBG15A-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBG15A-M3/52 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 protection applications. The device features a 15V reverse standoff voltage with a 24.4V maximum clamping voltage and 24.6A peak pulse current capability in a DO-215AA (SMB) package. The part is currently active in production and RoHS3 compliant, making it suitable for modern electronic circuit protection requirements.

Substiute Parts

SMBG15A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1076SMBG15A-M3/52 Datasheet

Current PartRFQ

SMBG15A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 4544SMBG15A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBG15A-M3/52 is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff: 15V (Typ)
• Voltage - Breakdown: 16.7V (Min)
• Voltage - Clamping: 24.4V (Max) @ Ipp
• Current - Peak Pulse: 24.6A (10/1000µs)
• Power - Peak Pulse: 600W
• Package / Case: DO-215AA, SMB Gull Wing
• Unidirectional Channels: 1
• Series: TransZorb®

The SMBG15A-E3/52 meets all these criteria and is therefore a direct electrical and mechanical equivalent. Both parts share identical voltage and current ratings, the same package configuration, and equivalent thermal and compliance specifications. The primary difference is the operating temperature range, which is narrower for the substitute part.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBG15A-M3/52 and SMBG15A-E3/52 are active production parts with identical electrical performance and package specifications. Both maintain RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

The SMBG15A-M3/52 provides an extended operating temperature range of -65°C to 175°C, suitable for applications requiring operation across wider temperature extremes. The SMBG15A-E3/52 operates within -55°C to 150°C, which covers standard industrial and commercial temperature ranges.

Selection between these parts should be based on the specific thermal operating requirements of the target application. If the circuit operates within the -55°C to 150°C range, either part is functionally equivalent. For applications requiring extended low-temperature operation below -55°C or sustained operation above 150°C, the SMBG15A-M3/52 is the appropriate choice.

Frequently Asked Questions (FAQ)

Q: Are SMBG15A-M3/52 and SMBG15A-E3/52 electrically identical?

A: Yes. Both parts have identical voltage ratings (15V reverse standoff, 16.7V breakdown minimum, 24.4V clamping maximum), current ratings (24.6A peak pulse), and power dissipation (600W peak pulse). They are direct electrical equivalents.

Q: Can I use SMBG15A-E3/52 as a drop-in replacement for SMBG15A-M3/52?

A: Yes, provided your application operates within the -55°C to 150°C temperature range. Both parts use identical DO-215AA (SMB) packages and have the same pinout and footprint.

Q: What is the difference between these two parts?

A: The primary difference is the operating temperature range. SMBG15A-M3/52 operates from -65°C to 175°C, while SMBG15A-E3/52 operates from -55°C to 150°C. All other electrical and mechanical specifications are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both SMBG15A-M3/52 and SMBG15A-E3/52 are RoHS3 compliant and REACH unaffected.

Q: Which part should I specify for a new design?

A: Specify based on your application's thermal requirements. If your circuit operates within -55°C to 150°C, either part is suitable. For extended temperature operation, specify SMBG15A-M3/52.