SMBG28A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBG28A-M3/5B is an active Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This unidirectional zener diode is designed for general-purpose transient voltage suppression in surface-mount applications. The component is specified for a 28V reverse standoff voltage with a 45.4V maximum clamping voltage and 13.2A peak pulse current capability. Finding equivalent or substitute parts may be necessary due to supply chain availability, inventory requirements, or specific packaging preferences while maintaining identical electrical performance and mechanical compatibility.

Substiute Parts

SMBG28A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1066SMBG28A-M3/5B Datasheet

Current PartRFQ

SMBG28A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 2208SMBG28A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBG28A-M3/5B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 28V (nominal)
• Voltage - Breakdown (Min): 31.1V
• Voltage - Clamping (Max) @ Ipp: 45.4V
• Current - Peak Pulse (10/1000µs): 13.2A
• Power - Peak Pulse: 600W
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Type: Unidirectional Zener
• Series: TransZorb®

The substitute part SMBG28A-E3/52 maintains identical electrical specifications and mechanical compatibility, differing only in manufacturing date code designation (E3/52 versus M3/5B) and operating temperature range. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and belong to the same TransZorb® product line.

Parameter Comparison

Engineering Selection Recommendations

Both SMBG28A-M3/5B and SMBG28A-E3/52 are active products from Vishay General Semiconductor - Diodes Division with ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

SMBG28A-M3/5B is suitable for applications requiring the extended operating temperature range of -65°C to 175°C (TJ).

SMBG28A-E3/52 is suitable for applications operating within the -55°C to 150°C (TJ) temperature range and offers higher current inventory availability (2105 pcs versus 1053 pcs).

Both parts maintain identical voltage suppression characteristics, peak pulse current ratings, and package compatibility. The choice between these parts depends on specific application temperature requirements and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can SMBG28A-E3/52 be used as a direct replacement for SMBG28A-M3/5B?

A: Yes, SMBG28A-E3/52 is a direct electrical and mechanical equivalent for applications operating within the -55°C to 150°C (TJ) temperature range. Both parts share identical voltage suppression specifications, peak pulse current ratings, and DO-215AA package configuration.

Q: What is the difference between SMBG28A-M3/5B and SMBG28A-E3/52?

A: The primary difference is the operating temperature range. SMBG28A-M3/5B operates from -65°C to 175°C (TJ), while SMBG28A-E3/52 operates from -55°C to 150°C (TJ). All electrical parameters and mechanical specifications are identical.

Q: Are both parts compatible with the same PCB layout and footprint?

A: Yes. Both parts use the DO-215AA (SMB Gull Wing) surface-mount package and are mechanically identical. No PCB layout modifications are required when substituting between these parts.

Q: What compliance certifications apply to both parts?

A: Both SMBG28A-M3/5B and SMBG28A-E3/52 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry Moisture Sensitivity Level (MSL) 1 (Unlimited).

Q: Which part should I select for high-temperature applications?

A: For applications requiring operation above 150°C (TJ), SMBG28A-M3/5B is the appropriate selection due to its extended upper temperature limit of 175°C (TJ).