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SMBJ54-E3/52 Equivalent & Substitute Parts
Part Overview
The SMBJ54-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. 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.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SMBJ54-E3/52 |
| Manufacturer | Vishay General Semiconductor - Diodes Division |
| Category | Transient Voltage Suppressors (TVS) |
| Package / Case | DO-214AA, SMB |
| Voltage - Reverse Standoff (Typ) | 54V |
| Voltage - Breakdown (Min) | 60V |
| Voltage - Clamping (Max) @ Ipp | 96.3V |
| Current - Peak Pulse (10/1000µs) | 6.2A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the SMBJ54-E3/52 is determined by the following critical electrical and mechanical parameters:
Primary Substitution Criteria:
- Voltage - Reverse Standoff (Typ): 54V
- Package / Case: DO-214AA, SMB (surface mount)
- Unidirectional Channels: 1
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Secondary Compatibility Parameters:
- Voltage - Breakdown (Min): 60V
- Power - Peak Pulse: 600W
- Operating Temperature Range: -55°C to -65°C minimum; 150°C maximum
Substitute parts are grouped into two categories based on clamping voltage performance:
Group A - Matched Clamping Voltage (96.3V): Parts with identical clamping voltage specifications maintain the same transient suppression characteristics as the original SMBJ54-E3/52.
Group B - Alternative Clamping Voltage (87.1V): Parts with 87.1V clamping voltage provide lower clamping performance but maintain the same reverse standoff voltage, breakdown voltage, and package compatibility. These are suitable for applications where the lower clamping voltage is acceptable.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Operating Temperature | Product Status | Package |
|---|---|---|---|---|---|---|---|
| SMBJ54-E3/52 | Vishay General Semiconductor | 54V | 96.3V | 6.2A | -55°C ~ 150°C | Obsolete | DO-214AA (SMBJ) |
| SMBJ54A-E3/52 | Vishay General Semiconductor | 54V | 87.1V | 6.9A | -55°C ~ 150°C | Active | DO-214AA (SMBJ) |
| SMBJ54E3/TR13 | Microchip Technology | 54V | 96.3V | 6.2A | -65°C ~ 150°C | Active | SMBJ (DO-214AA) |
| 1SMB54A TR13 | Central Semiconductor Corp | 54V | 87.1V | 6.9A | -65°C ~ 150°C | Active | SMB (DO-214AA) |
| SMBJ54A | MDD | 54V | 87.1V | 6.9A | -50°C ~ 150°C | Active | SMB/DO-214AA |
| SMBJ54A-13-F | Diodes Incorporated | 54V | 87.1V | 6.9A | -55°C ~ 150°C | Active | SMB (DO-214AA) |
| SMBJ54A-HR | Littelfuse Inc. | 54V | 87.1V | 6.9A | -65°C ~ 150°C | Active | DO-214AA (SMBJ) |
| SMBJ54A-HRA | Littelfuse Inc. | 54V | 87.1V | 6.9A | -65°C ~ 150°C | Active | DO-214AA (SMBJ) |
| SMBJ54AE3/TR13 | Microchip Technology | 54V | 87.1V | 6.9A | -65°C ~ 150°C | Active | SMBJ (DO-214AA) |
Engineering Selection Recommendations
Direct Replacement (Matched Electrical Performance):
SMBJ54E3/TR13 (Microchip Technology) provides the closest electrical match with identical 96.3V clamping voltage and 6.2A peak pulse current. This part is active and ROHS3 compliant with extended operating temperature range (-65°C to 150°C). Packaging is SMBJ (DO-214AA), maintaining full mechanical compatibility.
Primary Alternatives (Lower Clamping Voltage):
SMBJ54A-E3/52 (Vishay General Semiconductor) is an active part from the original manufacturer with the same reverse standoff voltage and operating temperature range. The 87.1V clamping voltage is lower than the original specification but maintains the same 54V reverse standoff and 600W peak pulse power rating.
SMBJ54A-13-F (Diodes Incorporated) and SMBJ54A-HR (Littelfuse Inc.) are established alternatives with 87.1V clamping voltage, active product status, and ROHS3 compliance. Both support the full operating temperature range required for the application.
Secondary Alternatives:
SMBJ54A (MDD) is available in high inventory with 87.1V clamping voltage and active status. Operating temperature range is -50°C to 150°C, which may be limiting for applications requiring full -55°C performance.
1SMB54A TR13 (Central Semiconductor Corp) and SMBJ54AE3/TR13 (Microchip Technology) provide 87.1V clamping alternatives with extended temperature ranges (-65°C to 150°C) and active product status.
All substitute parts maintain ROHS3 compliance, MSL 1 rating, and DO-214AA/SMB package compatibility.
Frequently Asked Questions (FAQ)
Q: Can SMBJ54A-E3/52 be used as a direct replacement for SMBJ54-E3/52?
A: SMBJ54A-E3/52 maintains the same reverse standoff voltage (54V), breakdown voltage (60V), package (DO-214AA), and operating temperature range (-55°C to 150°C). The primary difference is the clamping voltage: 87.1V versus 96.3V. This part is suitable if the application can tolerate the lower clamping voltage specification.
Q: What is the difference between the clamping voltage variants?
A: The SMBJ54-E3/52 clamps at 96.3V maximum, while alternatives like SMBJ54A-E3/52 clamp at 87.1V. Both maintain the same 54V reverse standoff voltage. The lower clamping voltage provides tighter transient suppression but may not be suitable for all circuit designs. Verify application requirements before substitution.
Q: Are all substitute parts in the same package?
A: All substitute parts use the DO-214AA (SMB) surface-mount package. Designations vary by manufacturer (SMBJ, SMB, or DO-214AA), but the physical package and pin configuration are identical, ensuring mechanical compatibility on existing PCBs.
Q: Which substitute part has the best availability?
A: SMBJ54A (MDD) has the highest inventory at 3,400 pieces. SMBJ54A-13-F (Diodes Incorporated) has 15,300 pieces available. Both are active products with ROHS3 compliance.
Q: Do all substitute parts meet RoHS and MSL requirements?
A: All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original SMBJ54-E3/52 specifications.
Q: What is the temperature range difference between substitutes?
A: The original part operates from -55°C to 150°C. Some substitutes extend the minimum temperature to -65°C (SMBJ54E3/TR13, 1SMB54A TR13, SMBJ54A-HR, SMBJ54A-HRA, SMBJ54AE3/TR13), while SMBJ54A (MDD) has a minimum of -50°C. Verify application temperature requirements before selection.
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