SMBJ26A-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ26A-E3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 26V reverse standoff voltage class and is designed for general-purpose transient protection applications. The part is Active status and ROHS3 compliant, with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical parameters and mechanical compatibility align within the specified tolerance ranges for this product category.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	26	V
Voltage - Breakdown (Min)	28.9	V
Voltage - Clamping (Max) @ Ipp	42.1	V
Current - Peak Pulse (10/1000µs)	14.3	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ26A-E3/5B are qualified based on the following criteria:

Electrical Parameters (Primary):

Voltage - Reverse Standoff (Typ): 26V
Voltage - Breakdown (Min): 28.9V minimum
Voltage - Clamping (Max) @ Ipp: 42.1V ±0.5V tolerance
Current - Peak Pulse (10/1000µs): 14.3A ±0.6A tolerance
Power - Peak Pulse: 600W

Mechanical Parameters (Secondary):

Package / Case: DO-214AA or SMB equivalent
Mounting Type: Surface Mount
Unidirectional Channels: 1

Compliance & Status:

Product Status: Active
RoHS Status: ROHS3 Compliant
MSL Rating: 1 (Unlimited)
Operating Temperature: -55°C to 150°C minimum

Substitute parts meeting these criteria are functionally equivalent for circuit protection applications requiring 26V TVS diode performance in SMB package form factor.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	RoHS Status	Inventory
SMBJ26A-E3/5B	Vishay General Semiconductor - Diodes Division	26V	28.9V	42.1V	14.3A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3 Compliant	4203 Pcs
SMBJ26A-E3/52	Vishay General Semiconductor - Diodes Division	26V	28.9V	42.1V	14.3A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3 Compliant	2000 Pcs
SMBJ26D-M3/I	Vishay General Semiconductor - Diodes Division	26V	29.3V	41.6V	14.5A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3 Compliant	8059 Pcs
SMBJ26A	EVVO Semi	26V	28.9V	42.1V	14.3A	600W	DO-214AC, SMA	-65 to 150°C	ROHS3 Compliant	39700 Pcs
SACB26	Littelfuse	26V	28.9V	42.3V	11.1A	500W	DO-214AA, SMB	-55 to 150°C	ROHS3 Compliant	2400 Pcs
SMBJ26A-13-F	Diodes Incorporated	26V	28.9V	42.1V	14.2A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3 Compliant	416200 Pcs
SMBJ26A-TR	STMicroelectronics	26V	28.9V	42.1V	14.9A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3 Compliant	7039 Pcs

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical & Mechanical Parameters):

SMBJ26A-E3/52 (Vishay) and SMBJ26A-13-F (Diodes Incorporated) are direct equivalents to the SMBJ26A-E3/5B. Both maintain identical reverse standoff voltage (26V), breakdown voltage (28.9V), clamping voltage (42.1V), and peak pulse current specifications within 0.1A variance. All three parts share DO-214AA SMB package compatibility, -55 to 150°C operating temperature range, and ROHS3 compliance.

Compatible Substitutes (Minor Parameter Variance):

SMBJ26D-M3/I (Vishay) exhibits acceptable variance: breakdown voltage increases to 29.3V and clamping voltage decreases to 41.6V, with peak pulse current at 14.5A. These variations remain within functional tolerance for general-purpose transient protection. Package and temperature specifications remain identical.

SMBJ26A-TR (STMicroelectronics) provides peak pulse current of 14.9A, exceeding the main part specification by 0.6A while maintaining all other electrical parameters. This represents enhanced current handling capability within the same 600W power rating and SMB package form factor.

Conditional Substitutes (Reduced Performance Parameters):

SACB26 (Littelfuse) operates at reduced peak pulse current (11.1A) and power dissipation (500W) compared to the 14.3A and 600W specifications of SMBJ26A-E3/5B. Clamping voltage increases marginally to 42.3V. This part is suitable only for applications with lower transient current requirements.

SMBJ26A (EVVO Semi) uses DO-214AC SMA package instead of DO-214AA SMB, requiring PCB layout modification. Extended operating temperature range (-65 to 150°C) provides enhanced low-temperature performance. Electrical parameters remain identical to the main part.

Compliance Status:

All substitute parts maintain Active product status, ROHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can SMBJ26A-E3/52 replace SMBJ26A-E3/5B directly?

A: Yes. SMBJ26A-E3/52 is a direct equivalent with identical electrical specifications (26V standoff, 28.9V breakdown, 42.1V clamping, 14.3A peak pulse) and DO-214AA SMB package compatibility. The difference is packaging configuration (reel specification), not component performance.

Q: What is the difference between SMBJ26D-M3/I and SMBJ26A-E3/5B?

A: SMBJ26D-M3/I maintains the same 26V reverse standoff voltage and SMB package but exhibits slightly different breakdown (29.3V vs 28.9V) and clamping (41.6V vs 42.1V) voltages. Peak pulse current is 14.5A versus 14.3A. These variations are within acceptable tolerance for transient suppression applications.

Q: Why does SACB26 have lower peak pulse current?

A: SACB26 is rated for 11.1A peak pulse current and 500W power dissipation, compared to 14.3A and 600W for SMBJ26A-E3/5B. This represents a different performance class within the 26V TVS category. SACB26 is suitable only for circuits with lower transient current exposure.

Q: Can I use SMBJ26A (EVVO Semi) as a substitute?

A: SMBJ26A from EVVO Semi provides identical electrical performance but uses DO-214AC SMA package instead of DO-214AA SMB. PCB footprint modification is required. The extended operating temperature range (-65 to 150°C) offers additional low-temperature capability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with current manufacturing standards and supply chain requirements.

Q: Which substitute offers the highest peak pulse current?

A: SMBJ26A-TR (STMicroelectronics) provides 14.9A peak pulse current, the highest among all listed substitutes. This represents a 0.6A increase over the main part specification while maintaining 600W power dissipation and identical voltage characteristics.

Q: What is the primary substitution criterion for 26V TVS diodes?

A: The primary criterion is matching the 26V reverse standoff voltage class combined with compatible clamping voltage (42.1V ±0.5V), peak pulse current (14.3A ±0.6A), and SMB package form factor. Secondary considerations include operating temperature range and compliance certifications.

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