SMB10J26-E3/52 Equivalent & Substitute Parts

Part Overview

The SMB10J26-E3/52 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for general-purpose transient voltage suppression in surface-mount applications using the DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	26V
Voltage - Breakdown (Min)	28.9V
Voltage - Clamping (Max) @ Ipp	46.6V
Current - Peak Pulse (10/1000µs)	21.5A
Power - Peak Pulse	1000W
Operating Temperature Range	-55°C to 150°C (TJ)
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SMB10J26-E3/52 is determined by the following critical parameters:

Voltage Rating: Reverse standoff voltage of 26V and breakdown voltage minimum of 28.9V
Clamping Voltage: Maximum clamping voltage at peak pulse current
Peak Pulse Current: Current handling capability at 10/1000µs pulse width
Package Compatibility: DO-214AA (SMB) or equivalent surface-mount package
Temperature Range: Operating temperature capability from -55°C to 150°C minimum
Compliance: ROHS3 compliance and MSL rating of 1

Substitute parts are grouped into two categories based on electrical performance:

Category A - Direct Electrical Equivalents (Clamping voltage 42.1V, Peak pulse current 14.2A–23.8A): SMB10J26A-E3/52, 1SMB26A TR13 PBFREE, SMBJ26A, SMBJ26A-HR, SMBJ26A-HRA, SMBJ26A-TR

Category B - Reduced Performance Substitutes (Clamping voltage 42.3V, Peak pulse current 11.1A): SACB26

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Package	Product Status
SMB10J26-E3/52	Vishay	26V	28.9V	46.6V	21.5A	1000W	DO-214AA (SMB)	Obsolete
SMB10J26A-E3/52	Vishay	26V	28.9V	42.1V	23.8A	1000W	DO-214AA (SMB)	Active
1SMB26A TR13 PBFREE	Central Semiconductor Corp	26V	28.9V	42.1V	14.2A	600W	DO-214AA (SMB)	Active
SACB26	Littelfuse	26V	28.9V	42.3V	11.1A	500W	DO-214AA (SMB)	Active
SMBJ26A	EVVO Semi	26V	28.9V	42.1V	14.3A	600W	DO-214AC (SMA)	Active
SMBJ26A-HR	Littelfuse Inc.	26V	28.9V	42.1V	14.3A	600W	DO-214AA (SMB)	Active
SMBJ26A-HRA	Littelfuse Inc.	26V	28.9V	42.1V	14.3A	600W	DO-214AA (SMB)	Active
SMBJ26A-TR	STMicroelectronics	26V	28.9V	42.1V	14.9A	600W	DO-214AA (SMB)	Active

Engineering Selection Recommendations

Primary Recommendation: SMB10J26A-E3/52 (Vishay) is the direct successor to the obsolete SMB10J26-E3/52. Both parts maintain identical voltage ratings and package specifications. The SMB10J26A-E3/52 is in active production status with ROHS3 compliance and MSL rating of 1, ensuring long-term availability and supply chain stability.

Secondary Recommendations: SMBJ26A-HR and SMBJ26A-HRA (Littelfuse Inc.) provide active-status alternatives in the DO-214AA (SMB) package with identical voltage ratings. Both maintain ROHS3 compliance and MSL rating of 1. These parts are suitable for applications where peak pulse current requirements do not exceed 14.3A.

Alternative for Reduced Performance Applications: SACB26 (Littelfuse) is suitable only for applications where peak pulse current does not exceed 11.1A and peak pulse power does not exceed 500W. This part maintains voltage rating compatibility and ROHS3 compliance but represents a reduced-performance option.

Package Consideration: SMBJ26A (EVVO Semi) uses the DO-214AC (SMA) package instead of DO-214AA (SMB). This part is suitable only if the PCB layout and footprint accommodate the SMA package variant.

Frequently Asked Questions (FAQ)

Q: Can SMB10J26A-E3/52 directly replace SMB10J26-E3/52?

A: Yes. Both parts share identical voltage ratings (26V reverse standoff, 28.9V breakdown minimum), the same DO-214AA (SMB) package, and equivalent operating temperature ranges. SMB10J26A-E3/52 is the active production equivalent.

Q: What is the difference between the clamping voltage of the original part (46.6V) and substitute parts (42.1V–42.3V)?

A: The original SMB10J26-E3/52 specifies a maximum clamping voltage of 46.6V at 21.5A peak pulse current. Substitute parts specify lower clamping voltages (42.1V–42.3V) at their respective peak pulse currents. This difference reflects the electrical characteristics at different current levels and does not affect voltage rating compatibility for 26V standoff applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity level).

Q: Can SMBJ26A (EVVO Semi) be used as a direct replacement?

A: SMBJ26A maintains voltage rating compatibility but uses the DO-214AC (SMA) package instead of DO-214AA (SMB). PCB footprint and layout must accommodate the SMA package variant. Electrical performance is equivalent to other SMBJ26A variants.

Q: What is the minimum peak pulse current requirement for substitute selection?

A: The original SMB10J26-E3/52 specifies 21.5A peak pulse current. If your application requires this full current capacity, SMB10J26A-E3/52 (23.8A) is the only substitute that exceeds this specification. For applications requiring less than 14.3A, all listed substitutes are suitable.

Q: Are there temperature range differences between substitute parts?

A: Most substitute parts maintain the -55°C to 150°C operating temperature range. SMBJ26A (EVVO Semi), SMBJ26A-HR, SMBJ26A-HRA, and SMBJ26A-TR extend the lower temperature limit to -65°C, providing enhanced cold-temperature performance.

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