SMBJ15C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ15C-E3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and provides transient overvoltage protection for general-purpose applications. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts maintain the same electrical protection characteristics while offering active product status and improved availability.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	15V
Voltage - Breakdown (Min)	16.7V
Voltage - Clamping (Max) @ Ipp	26.9V
Current - Peak Pulse (10/1000µs)	22.3A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SMBJ15C-E3/52 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 15V (all substitutes match)
Voltage - Breakdown (Min): 16.7V (all substitutes match)
Package / Case: DO-214AA, SMB (all substitutes match)
Mounting Type: Surface Mount (all substitutes match)
RoHS Status: ROHS3 Compliant (all substitutes match)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (all substitutes match)

Substitute parts are grouped into two electrical categories based on clamping voltage and peak pulse current characteristics:

Category A (Matched Clamping Voltage 26.9V): SMBJ15CE3/TR13 maintains identical clamping voltage and peak pulse current specifications.

Category B (Alternative Clamping Voltage 24.4V): SMBJ15CA-E3/52, SMBJ15CA, SMBJ15CA-13-F, SMBJ15CA-TR, SZ1SMB15CAT3G, and TV06B150JB-HF operate at 24.4V clamping voltage with peak pulse currents ranging from 24A to 25.1A. These parts provide equivalent protection within the same voltage class and package specification.

Parameter Comparison

Part Number	Manufacturer	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Operating Temperature	Product Status	Packaging
SMBJ15C-E3/52	Vishay General Semiconductor	26.9V	22.3A	-55°C ~ 150°C	Obsolete	DO-214AA (SMBJ)
SMBJ15CA-E3/52	Vishay General Semiconductor	24.4V	24.6A	-55°C ~ 150°C	Active	Cut Tape (CT) & Digi-Reel®
SMBJ15CE3/TR13	Microchip Technology	26.9V	22.3A	-65°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ15CA	EVVO Semi	24.4V	24.6A	-65°C ~ 150°C	Active	Cut Tape (CT) & Digi-Reel®
SMBJ15CA-13-F	Diodes Incorporated	24.4V	24A	-55°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ15CA-TR	STMicroelectronics	24.4V	25.1A	-55°C ~ 150°C	Active	Cut Tape (CT) & Digi-Reel®
SZ1SMB15CAT3G	Littelfuse Inc.	24.4V	24A	-65°C ~ 150°C	Active	Tape & Reel (TR)
TV06B150JB-HF	Comchip Technology	24.4V	24.59A	Not specified	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitute (Matched Specifications): SMBJ15CE3/TR13 from Microchip Technology provides identical electrical performance to the obsolete SMBJ15C-E3/52, with 26.9V clamping voltage and 22.3A peak pulse current. This part carries active product status and extends the operating temperature range to -65°C ~ 150°C. ROHS3 compliance and MSL 1 rating are maintained.

Alternative Substitutes (24.4V Clamping Class): Parts in this category—SMBJ15CA-E3/52, SMBJ15CA, SMBJ15CA-13-F, SMBJ15CA-TR, SZ1SMB15CAT3G, and TV06B150JB-HF—operate at 24.4V clamping voltage with peak pulse currents between 24A and 25.1A. All maintain ROHS3 compliance, MSL 1 rating, and active product status. Selection among these alternatives depends on packaging requirements (Cut Tape vs. Tape & Reel), manufacturer availability, and operating temperature specifications.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with modern manufacturing and environmental standards. SZ1SMB15CAT3G includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can SMBJ15CA-E3/52 directly replace SMBJ15C-E3/52?

A: SMBJ15CA-E3/52 is electrically compatible as a substitute. Both parts share identical reverse standoff voltage (15V), breakdown voltage (16.7V), and package specifications (DO-214AA, SMB). The clamping voltage differs (24.4V vs. 26.9V), but both operate within the same protection class. SMBJ15CA-E3/52 offers active product status and improved availability compared to the obsolete original part.

Q: What is the difference between SMBJ15CE3/TR13 and other substitutes?

A: SMBJ15CE3/TR13 from Microchip Technology maintains the exact clamping voltage (26.9V) and peak pulse current (22.3A) of the original SMBJ15C-E3/52. Other substitutes operate at 24.4V clamping voltage with slightly higher peak pulse currents (24A to 25.1A). SMBJ15CE3/TR13 is the closest electrical match and is supplied in Tape & Reel packaging.

Q: Are packaging differences between Cut Tape and Tape & Reel significant?

A: Packaging format affects handling and assembly processes but does not impact electrical performance. Cut Tape (CT) & Digi-Reel® packaging suits lower-volume applications and manual assembly. Tape & Reel (TR) packaging is optimized for high-volume automated assembly. Select based on production volume and assembly equipment capabilities.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature specifications vary among substitutes. The original part operates from -55°C to 150°C. Substitutes from EVVO Semi, Microchip Technology, and Littelfuse extend the lower limit to -65°C, providing broader environmental coverage. Diodes Incorporated and STMicroelectronics maintain the -55°C lower limit. Select based on application temperature requirements.

Q: Is SZ1SMB15CAT3G suitable for automotive applications?

A: SZ1SMB15CAT3G from Littelfuse carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. Other substitutes lack this specific automotive certification. If automotive qualification is required, SZ1SMB15CAT3G is the designated choice among available substitutes.

Q: What does the clamping voltage difference (26.9V vs. 24.4V) mean for circuit protection?

A: Clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during a transient event. The original part clamps at 26.9V, while most substitutes clamp at 24.4V. The 24.4V clamping voltage provides tighter voltage regulation and may offer enhanced protection in sensitive circuits. Both voltage classes are within the same protection specification for 15V standoff applications.

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