SMBJ11AHE3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ11AHE3/52 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 11V reverse standoff voltage class with an 18.2V maximum clamping voltage and 33A peak pulse current rating. The part is qualified to AEC-Q101 automotive standards and complies with ROHS3 and REACH requirements.

The SMBJ11AHE3/52 is currently discontinued at DiGi Electronics. Equivalent substitute parts are available from multiple manufacturers with identical or compatible electrical and mechanical specifications, ensuring design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	11V
Voltage - Breakdown (Min)	12.2V
Voltage - Clamping (Max) @ Ipp	18.2V
Current - Peak Pulse (10/1000µs)	33A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SMBJ11AHE3/52 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 11V (±tolerance)
Voltage - Clamping (Max) @ Ipp: 18.2V
Current - Peak Pulse (10/1000µs): 33A (±tolerance)
Power - Peak Pulse: 600W
Package / Case: DO-214AA or SMB
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Direct Electrical & Mechanical Equivalents Parts with identical voltage ratings, current ratings, power dissipation, and package specifications. These parts are fully interchangeable at the circuit level.

Category 2: Functionally Compatible Alternatives Parts with minor variations in operating temperature range or packaging designation (e.g., Tape & Reel vs. Cut Tape) that do not affect electrical performance in the application.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Package	Operating Temperature	Product Status
SMBJ11AHE3/52	Vishay General Semiconductor	11V	18.2V	33A	600W	DO-214AA (SMBJ)	-55°C ~ 150°C	Discontinued
SMBJ11A-E3/52	Vishay General Semiconductor	11V	18.2V	33A	600W	DO-214AA (SMBJ)	-55°C ~ 150°C	Active
SMBJ11A-M3/52	Vishay General Semiconductor	11V	18.2V	33A	600W	DO-214AA (SMBJ)	-55°C ~ 150°C	Active
SMBJ11A-M3/5B	Vishay General Semiconductor	11V	18.2V	33A	600W	DO-214AA (SMBJ)	-55°C ~ 150°C	Active
SMBJ11A-13-F	Diodes Incorporated	11V	18.2V	33A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMBJ11A-HR	Littelfuse Inc.	11V	18.2V	33A	600W	DO-214AA (SMBJ)	-65°C ~ 150°C	Active
SMBJ11A-HRA	Littelfuse Inc.	11V	18.2V	33A	600W	DO-214AA (SMBJ)	-65°C ~ 150°C	Active
SMBJ11A-TP	Micro Commercial Co	11V	18.2V	33A	600W	DO-214AA (SMB)	-55°C ~ 175°C	Active
SMBJ11AE3/TR13	Microchip Technology	11V	18.2V	33A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
TV06B110J-G	Comchip Technology	11V	18.2V	32.97A	600W	DO-214AA (SMB)	Not specified	Active
SMBJ10A-TR	STMicroelectronics	10V	17V	37A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

The following parts are fully equivalent to the SMBJ11AHE3/52 and are recommended as primary substitutes:

SMBJ11A-E3/52 (Vishay) — Active status, identical specifications, Tape & Reel packaging
SMBJ11A-M3/52 (Vishay) — Active status, identical specifications, Tape & Reel packaging
SMBJ11A-M3/5B (Vishay) — Active status, identical specifications, Tape & Reel packaging

These Vishay parts maintain the same electrical performance and automotive qualification (AEC-Q101 for the original part). All are ROHS3 compliant and carry MSL 1 rating.

Secondary Substitutes (Compatible Alternatives):

SMBJ11A-13-F (Diodes Incorporated) — Active status, identical electrical specifications, SMB package
SMBJ11A-HR (Littelfuse Inc.) — Active status, identical electrical specifications, extended lower temperature range (-65°C)
SMBJ11A-HRA (Littelfuse Inc.) — Active status, identical electrical specifications, extended lower temperature range (-65°C)
SMBJ11A-TP (Micro Commercial Co) — Active status, identical electrical specifications, extended upper temperature range (-55°C ~ 175°C)
SMBJ11AE3/TR13 (Microchip Technology) — Active status, identical electrical specifications, extended lower temperature range (-65°C)

Functionally Compatible Alternative:

TV06B110J-G (Comchip Technology) — Active status, 11V reverse standoff, 18.2V clamping, 32.97A peak pulse (within tolerance of 33A specification)

Lower Voltage Alternative (Application-Dependent):

SMBJ10A-TR (STMicroelectronics) — Manufacturer-recommended alternative with 10V reverse standoff and 17V clamping voltage. This part is suitable only for applications where the lower voltage rating is acceptable and provides higher peak pulse current (37A).

Frequently Asked Questions (FAQ)

Q: Can I use SMBJ11A-E3/52 as a direct replacement for SMBJ11AHE3/52?

A: Yes. Both parts share identical electrical specifications: 11V reverse standoff, 18.2V clamping voltage, 33A peak pulse current, and 600W power dissipation. Both are packaged in DO-214AA (SMBJ) and are ROHS3 compliant. The primary difference is product status: SMBJ11A-E3/52 is active and widely available.

Q: What is the difference between Vishay SMBJ11A variants (E3/52, M3/52, M3/5B)?

A: All three Vishay variants (SMBJ11A-E3/52, SMBJ11A-M3/52, SMBJ11A-M3/5B) have identical electrical and mechanical specifications. The suffix designations (E3, M3, 5B) indicate different packaging configurations and supplier tape specifications. Electrically, they are interchangeable.

Q: Can I substitute the Littelfuse SMBJ11A-HR for the original part?

A: Yes. The SMBJ11A-HR has identical electrical specifications and package type. The extended lower operating temperature range (-65°C vs. -55°C) provides additional margin for cold environment applications. This is a compatible upgrade.

Q: Is the Comchip TV06B110J-G equivalent to SMBJ11AHE3/52?

A: The TV06B110J-G is functionally compatible. It maintains the 11V reverse standoff and 18.2V clamping voltage. The peak pulse current is specified as 32.97A, which is within the tolerance of the 33A specification. Package and compliance ratings are equivalent.

Q: Why is SMBJ10A-TR listed as a substitute if it has different voltage ratings?

A: SMBJ10A-TR is listed as a manufacturer-recommended alternative, not a direct equivalent. It has a lower reverse standoff voltage (10V vs. 11V) and lower clamping voltage (17V vs. 18.2V). This part is suitable only for applications where the lower voltage protection threshold is acceptable. Use this part only if circuit design permits the lower voltage rating.

Q: What does "Tape & Reel (TR)" packaging mean?

A: Tape & Reel packaging indicates the component is supplied on a continuous carrier tape wound on a reel, suitable for automated pick-and-place assembly. This is standard for high-volume production. All listed substitutes are available in Tape & Reel format.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ11AHE3/52 specifications.

Q: Can I use SMBJ11A-TP if my application requires operation up to 175°C?

A: Yes. The SMBJ11A-TP from Micro Commercial Co is rated for -55°C ~ 175°C operating temperature, extending the upper temperature limit by 25°C compared to the original part. All other electrical specifications remain identical.

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