SMB10J22-E3/52 Equivalent & Substitute Parts

Part Overview

The SMB10J22-E3/52 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for general-purpose transient voltage suppression in surface-mount applications using the DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	22V
Voltage - Breakdown (Min)	24.4V
Voltage - Clamping (Max) @ Ipp	39.4V
Current - Peak Pulse (10/1000µs)	25.4A
Power - Peak Pulse	1000W
Operating Temperature	-55°C ~ 150°C (TJ)
Package / Case	DO-214AA, SMB
Type	Zener
Unidirectional Channels	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SMB10J22-E3/52 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 22V (all substitutes match)
Voltage - Breakdown (Min): 24.4V (all substitutes match)
Package / Case: DO-214AA, SMB (all substitutes match)
Type: Zener, Unidirectional (all substitutes match)
Operating Temperature Range: -55°C ~ 150°C minimum (all substitutes meet or exceed)
RoHS3 Compliance: Required (all substitutes comply)
Moisture Sensitivity Level: 1 (Unlimited) (all substitutes match)

Substitute parts are grouped into two categories based on voltage clamping characteristics:

Category A - Lower Clamping Voltage (35.4V - 35.5V): SMB10J22A-E3/52, SACB22, SMBJ22A, SMBJ22A-HR, SMBJ22A-TP, SMBJ22A-TR, SMBJ22AE3/TR13

Category B - Matching Clamping Voltage (39.4V): SMBJ22E3/TR13

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package	Product Status
SMB10J22-E3/52	Vishay General Semiconductor	22V	24.4V	39.4V	25.4A	1000W	-55°C ~ 150°C	DO-214AA (SMB)	Obsolete
SMB10J22A-E3/52	Vishay General Semiconductor	22V	24.4V	35.5V	28.2A	1000W	-55°C ~ 150°C	DO-214AA (SMB)	Active
SACB22	Littelfuse Inc.	22V	24.4V	35.4V	14A	500W	-55°C ~ 150°C	DO-214AA (SMB)	Active
SMBJ22A	Meritek	22V	24.4V	35.5V	16.9A	600W	-55°C ~ 150°C	DO-214AA (SMB)	Active
SMBJ22A-HR	Littelfuse Inc.	22V	24.4V	35.5V	16.9A	600W	-65°C ~ 150°C	DO-214AA (SMB)	Active
SMBJ22A-TP	Micro Commercial Co	22V	24.4V	35.5V	16.9A	600W	-55°C ~ 175°C	DO-214AA (SMB)	Active
SMBJ22A-TR	STMicroelectronics	22V	24.4V	35.5V	17.7A	600W	-55°C ~ 150°C	DO-214AA (SMB)	Active
SMBJ22AE3/TR13	Microchip Technology	22V	24.4V	35.5V	16.9A	600W	-65°C ~ 150°C	DO-214AA (SMB)	Active
SMBJ22E3/TR13	Microchip Technology	22V	24.4V	39.4V	15.2A	600W	-65°C ~ 150°C	DO-214AA (SMB)	Active

Engineering Selection Recommendations

Primary Recommendation: SMB10J22A-E3/52 (Vishay General Semiconductor)

This part maintains the same manufacturer lineage as the obsolete SMB10J22-E3/52, operates at identical voltage specifications, and is currently in active production status. It provides the highest peak pulse current (28.2A) and peak pulse power (1000W) among available substitutes, matching the original part's power handling capability. RoHS3 compliance and MSL 1 rating are maintained.

Secondary Recommendations for Voltage Clamping Match: SMBJ22E3/TR13 (Microchip Technology)

For applications requiring the exact 39.4V clamping voltage of the original part, SMBJ22E3/TR13 provides an active-status alternative. This part maintains the same clamping specification while offering an extended lower operating temperature limit (-65°C vs. -55°C). Peak pulse current is reduced to 15.2A and peak pulse power to 600W.

Alternative Substitutes for Lower Clamping Voltage Applications: SMBJ22A-TR (STMicroelectronics), SMBJ22A-HR (Littelfuse Inc.), SMBJ22AE3/TR13 (Microchip Technology)

These parts operate at 35.5V clamping voltage, representing a 3.9V reduction from the original specification. All maintain active production status, RoHS3 compliance, and MSL 1 rating. Selection among these alternatives depends on operating temperature requirements and supply chain availability.

All recommended substitutes are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage practices.

Frequently Asked Questions (FAQ)

Q: Can SMB10J22A-E3/52 be used as a direct replacement for SMB10J22-E3/52?

A: Yes. Both parts share identical voltage specifications (22V reverse standoff, 24.4V breakdown minimum, same package), with SMB10J22A-E3/52 offering superior peak pulse current (28.2A vs. 25.4A) and matching peak pulse power (1000W). The primary difference is the active production status of SMB10J22A-E3/52 versus the obsolete status of the original part.

Q: What is the significance of the voltage clamping difference between 39.4V and 35.5V?

A: Voltage clamping determines the maximum voltage the TVS diode allows across its terminals during a transient event. The original SMB10J22-E3/52 clamps at 39.4V maximum. Substitutes with 35.5V clamping provide tighter voltage regulation, offering 3.9V lower peak voltage suppression. Selection depends on the specific transient voltage suppression requirement of the application circuit.

Q: Are all substitute parts available in the same DO-214AA (SMB) package?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Q: What is the difference between tape and reel (TR) packaging and standard packaging?

A: Tape and reel packaging is a continuous strip format used for automated assembly equipment. Standard packaging may refer to bulk or alternative formats. For high-volume manufacturing, tape and reel packaging is standard. Verify packaging requirements with your assembly process specifications.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All listed substitute parts are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting current environmental and reliability standards.

Q: Which substitute offers the best thermal performance?

A: SMBJ22A-TP (Micro Commercial Co) supports the widest operating temperature range (-55°C ~ 175°C), providing 25°C additional upper temperature margin compared to most alternatives. SMBJ22A-HR and SMBJ22AE3/TR13 extend the lower temperature limit to -65°C for cold-environment applications.

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