SMB10J15A-M3/52 Equivalent & Substitute Parts

Part Overview

The SMB10J15A-M3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates with a 15V reverse standoff voltage and provides transient protection through a 24.4V maximum clamping voltage at peak pulse current. The device is housed in a DO-214AA (SMB) surface mount package and is classified as Active product status. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the TVS diode category.

Substiute Parts

SMB10J15A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1117SMB10J15A-M3/52 Datasheet

Current PartRFQ

SACB15

Littelfuse Inc.In Stock: 14088SACB15 Datasheet

MFR RecommendedRFQ

SMBJ15A

EVVO SemiIn Stock: 35459SMBJ15A Datasheet

MFR RecommendedRFQ

SZ1SMB15AT3G

Littelfuse Inc.In Stock: 17812SZ1SMB15AT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMB10J15A-M3/52 is determined by the following critical parameters:

• Voltage - Reverse Standoff: 15V (exact match required)
• Voltage - Breakdown (Min): 16.7V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 24.4V (exact match or lower acceptable)
• Current - Peak Pulse (10/1000µs): 41A (equal or greater acceptable)
• Power - Peak Pulse: 1000W (equal or greater acceptable)
• Operating Temperature Range: -55°C ~ 150°C minimum (equal or greater range acceptable)
• Package / Case: DO-214AA, SMB (mechanical compatibility required)
• Mounting Type: Surface Mount (required)

Three substitute parts meet these criteria with varying performance characteristics and manufacturer specifications.

Parameter Comparison

Engineering Selection Recommendations

SACB15 (Littelfuse Inc.) provides electrical compatibility with matching voltage parameters but operates at reduced peak pulse current (20A) and power dissipation (500W) compared to the original specification. This substitute is suitable for applications where the transient energy levels do not exceed 500W or peak currents remain below 20A. The component maintains identical operating temperature range and package form factor.

SMBJ15A (EVVO Semi) matches the voltage clamping specification (24.4V) and provides intermediate peak pulse current (24.6A) and power rating (600W). The extended operating temperature range (-65°C ~ 150°C) provides additional thermal margin. However, the package designation differs (DO-214AC, SMA versus DO-214AA, SMB), requiring mechanical verification for PCB layout compatibility.

SZ1SMB15AT3G (Littelfuse Inc.) delivers full electrical equivalence with matching clamping voltage (24.4V), peak pulse current (24A), and power rating (600W). This component includes automotive-grade qualification (AEC-Q101) and extended operating temperature range (-65°C ~ 150°C). The DO-214AA, SMB package maintains mechanical compatibility with the original design.

All substitute parts maintain ROHS3 compliance and Active product status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can SACB15 be used as a direct replacement for SMB10J15A-M3/52?

A: SACB15 is electrically compatible for voltage parameters but operates at reduced power dissipation (500W versus 1000W) and peak pulse current (20A versus 41A). Selection depends on actual transient energy levels in the application. If peak pulse currents exceed 20A or energy dissipation exceeds 500W, SACB15 is not suitable.

Q: What is the difference between SMBJ15A and the original part?

A: SMBJ15A matches the clamping voltage and provides comparable peak pulse current and power ratings. The primary difference is the package designation (DO-214AC, SMA versus DO-214AA, SMB). Verify PCB footprint compatibility before selection, as package dimensions differ.

Q: Is SZ1SMB15AT3G suitable for automotive applications?

A: SZ1SMB15AT3G carries AEC-Q101 automotive qualification and is suitable for automotive-grade applications. The original SMB10J15A-M3/52 does not specify automotive qualification. If automotive compliance is required, SZ1SMB15AT3G is the appropriate selection.

Q: Do all substitute parts have the same operating temperature range?

A: No. SMB10J15A-M3/52 and SACB15 operate from -55°C to 150°C. SMBJ15A and SZ1SMB15AT3G extend the lower limit to -65°C, providing additional thermal margin in cold environments.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (SACB15, SMBJ15A, and SZ1SMB15AT3G) are ROHS3 compliant, matching the regulatory status of the original SMB10J15A-M3/52.

Q: What is the primary limitation of SACB15 as a substitute?

A: SACB15 is limited to 500W peak pulse power and 20A peak pulse current, compared to the original 1000W and 41A specification. Applications requiring higher transient energy dissipation must use SMBJ15A or SZ1SMB15AT3G.