SMBJ26-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ26-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates with a 26V reverse standoff voltage and provides transient protection in general-purpose applications. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

SMBJ26-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1034SMBJ26-E3/52 Datasheet

Current PartRFQ

SMBJ26A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 2013SMBJ26A-E3/52 Datasheet

DirectRFQ

SACB26

LittelfuseIn Stock: 2455SACB26 Datasheet

MFR RecommendedRFQ

SMBJ26A

EVVO SemiIn Stock: 39808SMBJ26A Datasheet

MFR RecommendedRFQ

SMBJ26A

EVVO SemiIn Stock: 39808SMBJ26A Datasheet

MFR RecommendedRFQ

SMBJ26A

EVVO SemiIn Stock: 39808SMBJ26A Datasheet

MFR RecommendedRFQ

SMBJ26A-13-F

Diodes IncorporatedIn Stock: 416273SMBJ26A-13-F Datasheet

MFR RecommendedRFQ

SMBJ26A-TR

STMicroelectronicsIn Stock: 7108SMBJ26A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBJ26-E3/52 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 26V (exact match required)
• Voltage - Breakdown (Min): 28.9V (exact match required)
• Unidirectional Channels: 1 (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package compatibility: DO-214AA/SMB or equivalent footprint

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: 42.1V to 46.6V (within acceptable transient suppression range)
• Current - Peak Pulse (10/1000µs): 11.1A to 14.9A (within acceptable surge handling range)
• Operating Temperature Range: -55°C to -65°C minimum; 150°C maximum (acceptable if equal or exceeds original)

All substitute parts listed maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility with the original component.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Direct Replacement): SMBJ26A-E3/52 from Vishay General Semiconductor - Diodes Division is the primary substitute. This part maintains identical electrical specifications within the allowable variation range, shares the same manufacturer lineage, and is currently in active production status. The clamping voltage reduction from 46.6V to 42.1V remains within acceptable transient suppression parameters for general-purpose applications.

Alternative Substitutes (Cross-Manufacturer Options):

SMBJ26A-13-F (Diodes Incorporated) and SMBJ26A-TR (STMicroelectronics) provide functionally equivalent performance with active product status and full ROHS3 compliance. Both maintain the DO-214AA/SMB package footprint, ensuring direct PCB compatibility without layout modifications.

SACB26 (Littelfuse) is a viable substitute with identical package and voltage specifications. The reduced peak pulse power rating (500W versus 600W) and lower peak pulse current (11.1A versus 12.9A) may require application-level verification for high-transient environments.

SMBJ26A (EVVO Semi) offers extended operating temperature range (-65°C minimum) but uses the DO-214AC/SMA package variant. PCB footprint compatibility must be confirmed before selection, as SMA and SMB packages differ in physical dimensions.

All listed substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can SMBJ26A-E3/52 be used as a direct replacement for SMBJ26-E3/52?

A: Yes. Both parts share identical reverse standoff voltage (26V), breakdown voltage (28.9V), and operating temperature range (-55°C ~ 150°C). The clamping voltage reduction from 46.6V to 42.1V falls within acceptable transient suppression parameters for general-purpose applications. SMBJ26A-E3/52 is currently in active production, addressing the obsolescence of the original part.

Q: What is the difference between DO-214AA/SMB and DO-214AC/SMA packages?

A: DO-214AA (SMB) and DO-214AC (SMA) are distinct surface-mount packages with different physical dimensions and PCB footprints. SMB is larger than SMA. Direct substitution between these packages requires PCB layout verification. SMBJ26A from EVVO Semi uses the SMA package and may not be compatible with existing SMB footprints without design modification.

Q: Are there any compliance or certification differences between the substitute parts?

A: All listed substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) rating, matching the original SMBJ26-E3/52. No compliance gaps exist between the original and substitute parts.

Q: How does the peak pulse current variation affect part selection?

A: The original SMBJ26-E3/52 specifies 12.9A peak pulse current. Substitutes range from 11.1A (SACB26) to 14.9A (SMBJ26A-TR). Higher peak pulse current ratings provide enhanced surge handling capability. Lower ratings (SACB26 at 11.1A) require application-level verification to confirm adequate transient protection for the intended circuit.

Q: Can SACB26 from Littelfuse be used if the application requires 600W peak pulse power?

A: SACB26 is rated for 500W peak pulse power, compared to 600W for the original part and most substitutes. Application-level analysis is required to determine if 500W power dissipation is sufficient for the intended transient protection duty cycle. If 600W capability is mandatory, select SMBJ26A-E3/52, SMBJ26A-13-F, or SMBJ26A-TR instead.

Q: Does the extended temperature range of SMBJ26A (EVVO Semi) provide additional design margin?

A: SMBJ26A from EVVO Semi operates from -65°C to 150°C, compared to -55°C to 150°C for the original part. The extended low-temperature capability provides additional margin for applications operating in extreme cold environments. However, the SMA package footprint difference must be resolved before selection.