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SMBJ22AE3/TR13 Equivalent & Substitute Parts
Part Overview
The SMBJ22AE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional Zener diode operates with a 22V reverse standoff voltage and provides 35.5V maximum clamping voltage at peak pulse current of 16.9A. The component is packaged in DO-214AA (SMB) format and supplied on Tape & Reel (TR) for automated assembly. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameter tolerances.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 22 | V |
| Voltage - Breakdown (Min) | 24.4 | V |
| Voltage - Clamping (Max) @ Ipp | 35.5 | V |
| Current - Peak Pulse (10/1000µs) | 16.9 | A |
| Power - Peak Pulse | 600 | W |
| Operating Temperature Range | -65 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 SMBJ22AE3/TR13 are classified into two categories based on electrical parameter alignment:
Direct Equivalents maintain identical electrical specifications across all critical parameters: 22V reverse standoff voltage, 24.4V minimum breakdown voltage, 35.5V maximum clamping voltage, and 16.9A peak pulse current at 600W peak pulse power. These parts satisfy full functional interchangeability within the same circuit application.
Similar Equivalents maintain the same voltage ratings (22V standoff, 24.4V breakdown, 35.5V clamping) but exhibit variations in peak pulse current or power dissipation. These parts are suitable for applications where the specified current or power rating provides adequate margin above circuit requirements.
Substitution eligibility is determined by the following parameters:
- Voltage - Reverse Standoff (Typ): 22V
- Voltage - Breakdown (Min): 24.4V
- Voltage - Clamping (Max) @ Ipp: 35.5V (or 35.4V for similar equivalents)
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- Type: Zener
- Unidirectional Channels: 1
- RoHS Status: ROHS3 Compliant
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) [V] | Voltage - Breakdown (Min) [V] | Voltage - Clamping (Max) @ Ipp [V] | Current - Peak Pulse (10/1000µs) [A] | Power - Peak Pulse [W] | Operating Temperature [°C] | Package / Case | Packaging | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| SMBJ22AE3/TR13 | Microchip Technology | 22 | 24.4 | 35.5 | 16.9 | 600 | -65 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 Compliant |
| SMBJ22A | Meritek | 22 | 24.4 | 35.5 | 16.9 | 600 | -55 to 150 | DO-214AA (SMB) | — | ROHS3 Compliant |
| SMBJ22A-13-F | Diodes Incorporated | 22 | 24.4 | 35.5 | 16.9 | 600 | -55 to 150 | DO-214AA, SMB | Cut Tape (CT) & Digi-Reel® | ROHS3 Compliant |
| SMBJ22A-E3/52 | Vishay General Semiconductor - Diodes Division | 22 | 24.4 | 35.5 | 16.9 | 600 | -55 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 Compliant |
| SMBJ22A-TP | Micro Commercial Co | 22 | 24.4 | 35.5 | 16.9 | 600 | -55 to 175 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 Compliant |
| SACB22 | Littelfuse Inc. | 22 | 24.4 | 35.4 | 14 | 500 | -55 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 Compliant |
| SMBJ22A-TR | STMicroelectronics | 22 | 24.4 | 35.5 | 17.7 | 600 | -55 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 Compliant |
| SZ1SMB22AT3G | onsemi | 22 | 24.4 | 35.5 | 16.9 | 600 | -65 to 150 | DO-214AA, SMB | Bulk | ROHS3 Compliant |
Engineering Selection Recommendations
All substitute parts listed maintain Active product status and full RoHS3 compliance, ensuring regulatory alignment with the original SMBJ22AE3/TR13 component. Selection among equivalent parts is determined by application-specific requirements and supply chain availability.
Direct Equivalents (SMBJ22A by Meritek, SMBJ22A-13-F by Diodes Incorporated, SMBJ22A-E3/52 by Vishay, SMBJ22A-TP by Micro Commercial Co, and SZ1SMB22AT3G by onsemi) provide identical electrical performance with 22V standoff, 24.4V breakdown, 35.5V clamping, and 16.9A peak pulse current. These parts are suitable for direct substitution in applications requiring the full specified electrical rating.
The SMBJ22A-TP variant by Micro Commercial Co extends the operating temperature range to 175°C, providing enhanced thermal performance for elevated-temperature applications while maintaining all other electrical specifications.
The SZ1SMB22AT3G by onsemi maintains the original operating temperature range (-65°C to 150°C) and includes AEC-Q101 automotive qualification, supporting applications requiring automotive-grade components.
The SMBJ22A-TR by STMicroelectronics provides 17.7A peak pulse current, exceeding the 16.9A specification of the original part while maintaining 35.5V clamping voltage and 600W peak pulse power, offering additional current margin for circuit protection.
The SACB22 by Littelfuse Inc. operates with reduced peak pulse current (14A) and power dissipation (500W) while maintaining identical voltage specifications. This part is suitable for applications where circuit requirements do not exceed these reduced ratings.
Packaging format selection (Tape & Reel, Cut Tape & Digi-Reel, or Bulk) depends on assembly process requirements and order quantity considerations.
Frequently Asked Questions (FAQ)
Q: Can SMBJ22A by Meritek be used as a direct replacement for SMBJ22AE3/TR13?
A: Yes. The SMBJ22A maintains identical electrical specifications: 22V reverse standoff voltage, 24.4V minimum breakdown voltage, 35.5V maximum clamping voltage, 16.9A peak pulse current, and 600W peak pulse power. Both components are packaged in DO-214AA (SMB) format and are RoHS3 compliant. The operating temperature range differs slightly (-55°C to 150°C versus -65°C to 150°C), which does not affect compatibility in most applications.
Q: What is the difference between SMBJ22A-TP and SMBJ22AE3/TR13?
A: The SMBJ22A-TP by Micro Commercial Co provides identical electrical specifications and packaging but extends the maximum operating temperature to 175°C compared to 150°C for the original part. This makes SMBJ22A-TP suitable for applications requiring higher thermal performance. Both are supplied on Tape & Reel and are RoHS3 compliant.
Q: Is SACB22 by Littelfuse a suitable substitute?
A: SACB22 maintains the same voltage ratings (22V standoff, 24.4V breakdown, 35.4V clamping) but operates with reduced peak pulse current (14A versus 16.9A) and power dissipation (500W versus 600W). SACB22 is suitable for applications where circuit requirements do not exceed 14A peak pulse current. Verify that the application's transient current does not exceed this limit before substitution.
Q: What is the advantage of SZ1SMB22AT3G over other substitutes?
A: The SZ1SMB22AT3G by onsemi maintains the original operating temperature range (-65°C to 150°C) and includes AEC-Q101 automotive qualification. This part is required for automotive applications or systems requiring automotive-grade component certification. Electrical specifications are identical to the original part.
Q: Does packaging format affect electrical performance?
A: No. Packaging format (Tape & Reel, Cut Tape & Digi-Reel, or Bulk) affects assembly process compatibility and order logistics but does not alter electrical performance. Selection depends on manufacturing process requirements and order quantity.
Q: Can SMBJ22A-TR by STMicroelectronics be used in place of SMBJ22AE3/TR13?
A: Yes. The SMBJ22A-TR provides 17.7A peak pulse current, which exceeds the 16.9A specification of the original part. All other electrical parameters match: 22V standoff, 24.4V breakdown, 35.5V clamping, and 600W peak pulse power. This part offers additional current margin and is suitable for direct substitution.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed are RoHS3 compliant and maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the regulatory and environmental specifications of the original SMBJ22AE3/TR13.
Q: What determines whether a part is a direct equivalent versus a similar equivalent?
A: Direct equivalents maintain identical electrical specifications across all critical parameters: 22V reverse standoff, 24.4V breakdown, 35.5V clamping, and 16.9A peak pulse current. Similar equivalents maintain voltage specifications but vary in peak pulse current or power dissipation. Verify application requirements before selecting a similar equivalent.
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