SMBG24-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG24-E3/52 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 24V reverse standoff voltage with a 43V maximum clamping voltage and 14A peak pulse current capability in a surface-mount DO-215AA (SMB) package.

The SMBG24-E3/52 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

SMBG24-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1203SMBG24-E3/52 Datasheet

Current PartRFQ

SMBG24A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 4414SMBG24A-E3/52 Datasheet

DirectRFQ

MSMBG24AE3

Microchip TechnologyIn Stock: 710MSMBG24AE3 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBG24-E3/52 is determined by the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 24V and breakdown voltage minimum of 26.7V must be maintained
• Clamping Voltage: Maximum clamping voltage at peak pulse current must not exceed application requirements
• Peak Pulse Current: Minimum 14A capability required for transient suppression
• Package Compatibility: DO-215AA (SMB) surface-mount package with gull-wing leads
• Thermal Range: Operating temperature range of -55°C to 150°C (TJ)
• Diode Type: Unidirectional Zener TVS configuration

Substitute parts are grouped based on matching these core electrical and mechanical specifications. Parts that maintain the same voltage class, package form factor, and thermal operating range are considered functionally equivalent for general-purpose transient protection applications.

Parameter Comparison

Engineering Selection Recommendations

SMBG24A-E3/52 (Direct Substitute - Vishay)

This part is the primary direct substitute for the obsolete SMBG24-E3/52. It maintains identical voltage ratings, package form factor, and thermal operating range. The SMBG24A-E3/52 offers improved peak pulse current capability (15.4A versus 14A) and lower clamping voltage (38.9V versus 43V), providing enhanced transient suppression performance. Product status is active with full RoHS3 compliance. This part is suitable for direct replacement in existing designs without circuit modification.

MSMBG24AE3 (Upgrade Substitute - Microchip)

This part provides equivalent electrical performance to the SMBG24A-E3/52 with an extended lower operating temperature limit (-65°C versus -55°C). It is manufactured by Microchip Technology and carries military-grade qualification under MIL-PRF-19500. This part is recommended for applications requiring military-grade components or extended low-temperature operation. Note that this part is RoHS non-compliant and supplied in bulk packaging. Product status is active.

Frequently Asked Questions (FAQ)

Q: Can SMBG24A-E3/52 be used as a direct replacement for SMBG24-E3/52?

A: Yes. Both parts share identical reverse standoff voltage (24V), breakdown voltage (26.7V minimum), package form factor (DO-215AA SMB), and thermal operating range (-55°C to 150°C). The SMBG24A-E3/52 provides equivalent or superior performance with lower clamping voltage and higher peak pulse current capability.

Q: What is the difference between SMBG24A-E3/52 and MSMBG24AE3?

A: Both parts maintain the same 24V voltage class and DO-215AA package. The MSMBG24AE3 extends the lower operating temperature to -65°C and includes military-grade qualification. The SMBG24A-E3/52 is RoHS3 compliant, while the MSMBG24AE3 is RoHS non-compliant. Selection depends on temperature requirements and compliance specifications.

Q: Are there packaging differences between these substitutes?

A: SMBG24A-E3/52 is supplied in Tape & Reel (TR) packaging. MSMBG24AE3 is supplied in bulk packaging. Both use the same DO-215AA SMB surface-mount package form factor and are compatible with standard pick-and-place assembly equipment.

Q: What parameters must remain constant for substitution?

A: The 24V reverse standoff voltage, 26.7V minimum breakdown voltage, DO-215AA package, and surface-mount gull-wing configuration must be maintained. Peak pulse current must meet or exceed 14A, and operating temperature range must encompass the application requirements.

Q: Is the SMBG24-E3/52 still available?

A: The SMBG24-E3/52 is classified as obsolete. Active substitutes with superior performance characteristics and current product status are available through SMBG24A-E3/52 (Vishay) and MSMBG24AE3 (Microchip).