SMBG15A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBG15A-M3/5B is an active Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This unidirectional surface-mount device provides transient overvoltage protection for general-purpose applications. The part is actively manufactured and widely available, with 704 units currently in stock. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and design standardization across manufacturing batches and distribution channels.

Substiute Parts

SMBG15A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 800SMBG15A-M3/5B Datasheet

Current PartRFQ

SMBG15A-E3/52

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG15A-M3/5B is determined by strict equivalence across the following critical parameters:

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

The substitute part SMBG15A-E3/52 meets all electrical and mechanical specifications required for direct substitution. Both parts share identical voltage ratings, peak pulse current capacity, power dissipation, and physical packaging. Differences in operating temperature range and inventory levels do not affect functional interchangeability in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Both SMBG15A-M3/5B and SMBG15A-E3/52 are active products manufactured by Vishay General Semiconductor - Diodes Division and carry identical ROHS3 compliance and MSL ratings. Selection between these parts should be based on application-specific operating temperature requirements and supply availability.

The SMBG15A-M3/5B supports an extended operating temperature range of -65°C to 175°C, making it suitable for applications requiring operation at extreme low or high junction temperatures. The SMBG15A-E3/52 operates within -55°C to 150°C, which covers standard industrial and commercial temperature ranges. Both parts are REACH Unaffected and classified under ECCN EAR99.

For applications operating within the -55°C to 150°C range, either part provides equivalent protection. For designs requiring extended temperature performance beyond these limits, the SMBG15A-M3/5B is the appropriate selection. Inventory availability may also influence procurement decisions, with SMBG15A-E3/52 currently showing higher stock levels (4503 units versus 704 units).

Frequently Asked Questions (FAQ)

Q: Can SMBG15A-E3/52 be used as a direct replacement for SMBG15A-M3/5B?

A: Yes, SMBG15A-E3/52 is a direct electrical and mechanical substitute for SMBG15A-M3/5B. Both parts share identical voltage ratings (15V reverse standoff, 16.7V breakdown minimum, 24.4V clamping maximum), peak pulse current (24.6A), power dissipation (600W), and DO-215AA SMB Gull Wing packaging. The primary difference is operating temperature range.

Q: What is the difference in operating temperature between these parts?

A: SMBG15A-M3/5B operates from -65°C to 175°C junction temperature, while SMBG15A-E3/52 operates from -55°C to 150°C. For applications within the -55°C to 150°C range, both parts are functionally equivalent. Applications requiring operation below -55°C or above 150°C must use SMBG15A-M3/5B.

Q: Are both parts RoHS compliant?

A: Yes, both SMBG15A-M3/5B and SMBG15A-E3/52 are ROHS3 Compliant with MSL rating of 1 (Unlimited moisture sensitivity level).

Q: What is the physical package for these TVS diodes?

A: Both parts use DO-215AA package with SMB Gull Wing configuration, suitable for surface-mount assembly on standard PCBs.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts have identical electrical specifications: 15V reverse standoff voltage, 16.7V minimum breakdown voltage, 24.4V maximum clamping voltage at peak pulse current, and 24.6A peak pulse current rating (10/1000µs waveform).