SMBJ26C-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ26C-E3/5B is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 26V reverse standoff voltage and provides 46.6V maximum clamping voltage at peak pulse current. The SMBJ26C-E3/5B is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

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)	12.9A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Type	Zener
Bidirectional Channels	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SMBJ26C-E3/5B is determined by strict alignment of the following electrical and mechanical parameters:

Voltage - Reverse Standoff: 26V (required match)
Voltage - Breakdown (Min): 28.9V (required match)
Package / Case: DO-214AA, SMB (required match)
Mounting Type: Surface Mount (required match)
Type: Zener, Bidirectional (required match)
RoHS Status: ROHS3 Compliant (required match)

Substitute parts must maintain these core specifications. Variations in clamping voltage, peak pulse current, and operating temperature range are acceptable within the scope of general-purpose TVS diode applications, provided the primary voltage and package specifications remain constant.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Operating Temperature	Package / Case	Product Status
SMBJ26C-E3/5B	Vishay General Semiconductor - Diodes Division	26V	28.9V	46.6V	12.9A	-55°C ~ 150°C	DO-214AA, SMB	Obsolete
SMBJ26CA-E3/5B	Vishay General Semiconductor - Diodes Division	26V	28.9V	42.1V	14.3A	-55°C ~ 150°C	DO-214AA, SMB	Active
SMBJ26CA-HR	Littelfuse Inc.	26V	28.9V	42.1V	14.3A	-65°C ~ 150°C	DO-214AA, SMB	Active
SMBJ26CA-HRA	Littelfuse Inc.	26V	28.9V	42.1V	14.3A	-65°C ~ 150°C	DO-214AA, SMB	Active
SMBJ26CA	EVVO Semi	26V	28.9V	42.1V	14.3A	-65°C ~ 150°C	DO-214AA, SMB	Active
SMBJ26CA-13-F	Diodes Incorporated	26V	28.9V	42.1V	14.2A	-55°C ~ 150°C	DO-214AA, SMB	Active
SMBJ26CA-TP	Micro Commercial Co	26V	28.9V	42.1V	14.2A	-55°C ~ 175°C	DO-214AA, SMB	Active
SMBJ26CA-TR	STMicroelectronics	26V	28.9V	42.1V	14.9A	-55°C ~ 150°C	DO-214AA, SMB	Active

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, consistent with the original SMBJ26C-E3/5B specification. All substitute parts are classified as Active products, ensuring ongoing availability and manufacturing support.

The SMBJ26CA-E3/5B from Vishay General Semiconductor - Diodes Division provides the closest functional equivalence, maintaining identical voltage specifications and operating temperature range while offering improved peak pulse current performance (14.3A vs. 12.9A).

For applications requiring extended low-temperature operation, SMBJ26CA-HR and SMBJ26CA-HRA from Littelfuse Inc. extend the operating range to -65°C. SMBJ26CA-TP from Micro Commercial Co supports elevated temperature operation to 175°C.

All substitute parts maintain the DO-214AA (SMB) surface-mount package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SMBJ26CA-E3/5B directly replace SMBJ26C-E3/5B?

A: Yes. Both parts share identical voltage specifications (26V reverse standoff, 28.9V breakdown minimum), package format (DO-214AA, SMB), and operating temperature range (-55°C ~ 150°C). The SMBJ26CA-E3/5B is manufactured by the same supplier and is classified as Active, providing direct substitution with improved current handling (14.3A vs. 12.9A).

Q: What is the difference between clamping voltage variations in the substitute parts?

A: The original SMBJ26C-E3/5B specifies 46.6V maximum clamping voltage at peak pulse current. Substitute parts specify 42.1V maximum clamping voltage. Both values remain within acceptable operating margins for general-purpose transient voltage suppression, as the critical parameters—reverse standoff voltage (26V) and breakdown voltage (28.9V minimum)—remain constant across all parts.

Q: Are all substitute parts suitable for the same PCB assembly process?

A: Yes. All substitute parts use the DO-214AA (SMB) surface-mount package with identical mechanical dimensions and thermal characteristics. No PCB layout modifications or assembly process changes are required.

Q: Which substitute part offers the widest operating temperature range?

A: SMBJ26CA-TP from Micro Commercial Co supports -55°C ~ 175°C, extending the upper temperature limit by 25°C compared to the original specification. This part is suitable for applications requiring elevated ambient or junction temperatures.

Q: Do all substitute parts meet the same compliance standards as the original?

A: Yes. All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ26C-E3/5B specification. All are classified as Active products with ongoing manufacturing support.

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