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SMBJ5.0E3/TR13 Equivalent & Substitute Parts
Part Overview
The SMBJ5.0E3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 5V reverse standoff voltage, 9.6V maximum clamping voltage, and 62.5A peak pulse current capability in the DO-214AA (SMB) package format. The part is active in production status with RoHS3 compliance and unlimited moisture sensitivity rating.
Equivalent and substitute parts are identified to address supply chain requirements, packaging format preferences, manufacturer availability, and specific application performance parameters while maintaining electrical and mechanical compatibility within the TVS diode category.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 5 | V |
| Voltage - Breakdown (Min) | 6.4 | V |
| Voltage - Clamping (Max) @ Ipp | 9.6 | V |
| Current - Peak Pulse (10/1000µs) | 62.5 | 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 | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the SMBJ5.0E3/TR13 are classified based on strict electrical parameter compatibility within the transient voltage suppressor category. The primary substitution criteria are:
Critical Parameters for Substitution:
- Reverse standoff voltage: 5V (fixed requirement)
- Breakdown voltage minimum: 6.4V (fixed requirement)
- Clamping voltage maximum: 9.2V to 10V (acceptable range)
- Peak pulse current: 44A to 68A (acceptable range for application tolerance)
- Power dissipation: 500W to 600W (acceptable range)
- Package format: DO-214AA / SMB (mechanical compatibility)
- Mounting type: Surface Mount (required)
- Diode type: Zener, unidirectional (functional requirement)
Grouping Logic:
Group A - Direct Electrical Equivalents (9.2V Clamping): Parts with 9.2V clamping voltage and 65.2A to 68A peak pulse current represent the closest electrical match to the SMBJ5.0E3/TR13. These include SMBJ5.0A (EVVO Semi), SMBJ5.0A-13-F (Diodes Incorporated), SMBJ5.0A-TP (Micro Commercial Co), SMBJ5.0A-TR (STMicroelectronics), SMBJ5V0A (Fairchild Semiconductor), and SZ1SMB5.0AT3G (Littelfuse Inc.).
Group B - Acceptable Electrical Alternatives (10V Clamping): Parts with 10V clamping voltage and 44A peak pulse current meet the reverse standoff and breakdown voltage requirements but operate at higher clamping levels with reduced peak current capacity. These include SACB5.0 (Littelfuse Inc.) and SMBSAC5.0-TP (Micro Commercial Co).
All substitute parts maintain DO-214AA / SMB package compatibility, surface-mount configuration, and RoHS3 compliance.
Parameter Comparison
| Manufacturer 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 / Case | Unidirectional Channels | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| SMBJ5.0E3/TR13 | Microchip Technology | 5V | 6.4V | 9.6V | 62.5A | 600W | -65 to 150°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
| SMBJ5.0A | EVVO Semi | 5V | 6.4V | 9.2V | 65.3A | 600W | -65 to 150°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
| SMBJ5.0A-13-F | Diodes Incorporated | 5V | 6.4V | 9.2V | 65.2A | 600W | -55 to 150°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
| SMBJ5.0A-TP | Micro Commercial Co | 5V | 6.4V | 9.2V | 65.2A | 600W | -55 to 175°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
| SMBJ5.0A-TR | STMicroelectronics | 5V | 6.4V | 9.2V | 68A | 600W | -55 to 150°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
| SMBJ5V0A | Fairchild Semiconductor | 5V | 6.4V | 9.2V | 65.2A | 600W | -55 to 150°C | DO-214AA, SMB | 1 | Not specified |
| SZ1SMB5.0AT3G | Littelfuse Inc. | 5V | 6.4V | 9.2V | 65.2A | 600W | -65 to 150°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
| SACB5.0 | Littelfuse Inc. | 5V | 7.6V | 10V | 44A | 500W | -55 to 150°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
| SMBSAC5.0-TP | Micro Commercial Co | 5V | 7.6V | 10V | 44A | 500W | -55 to 175°C | DO-214AA, SMB | 1 | ROHS3 Compliant |
Engineering Selection Recommendations
Group A Selection (9.2V Clamping Equivalents):
The SMBJ5.0A-TR (STMicroelectronics) is the preferred substitute, offering the highest peak pulse current rating at 68A with 600W power dissipation, matching the original part's thermal capability. This part maintains ROHS3 compliance and REACH unaffected status. The operating temperature range of -55 to 150°C is suitable for most applications within the original specification.
The SZ1SMB5.0AT3G (Littelfuse Inc.) provides an alternative with automotive-grade qualification (AEC-Q101) and extended temperature matching the original part (-65 to 150°C). This part includes specified capacitance (2700pF @ 1MHz) and is suitable for automotive and industrial applications requiring higher reliability standards.
The SMBJ5.0A (EVVO Semi) offers the highest inventory availability (44,310 units) with matching temperature range (-65 to 150°C) and electrical specifications, providing supply chain flexibility.
Group B Selection (10V Clamping Alternatives):
The SACB5.0 (Littelfuse Inc.) and SMBSAC5.0-TP (Micro Commercial Co) are acceptable substitutes where the application tolerates higher clamping voltage (10V) and reduced peak pulse current (44A). These parts are suitable for lower-current transient protection scenarios. The SMBSAC5.0-TP extends the operating temperature to 175°C, providing thermal margin for high-temperature environments.
Compliance Considerations:
All recommended substitutes maintain RoHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating. Parts with REACH unaffected status (SMBJ5.0A-TR, SMBJ5.0A-13-F, SMBJ5.0A-TP, SZ1SMB5.0AT3G) are preferred for supply chain continuity. The SACB5.0 carries REACH affected status, requiring verification for specific regulatory jurisdictions.
Frequently Asked Questions (FAQ)
Q: Can SMBJ5.0A-TR directly replace SMBJ5.0E3/TR13 in existing designs?
A: Yes. The SMBJ5.0A-TR maintains identical reverse standoff voltage (5V), breakdown voltage (6.4V), and peak pulse power (600W). The clamping voltage difference (9.2V vs. 9.6V) and peak current increase (68A vs. 62.5A) represent improved performance characteristics. Both parts use DO-214AA / SMB packaging and surface-mount configuration. Operating temperature range (-55 to 150°C) covers the original specification minimum of -65°C with reduced low-temperature capability.
Q: What is the difference between Group A and Group B substitutes?
A: Group A substitutes (9.2V clamping) maintain clamping voltage within 0.4V of the original part and provide peak pulse currents between 65.2A and 68A. Group B substitutes (10V clamping) operate at 0.4V higher clamping voltage with reduced peak pulse current (44A). Group A is recommended for direct replacement. Group B is suitable only when application transient energy levels are lower or when higher clamping voltage is acceptable.
Q: Are all substitute parts RoHS3 compliant?
A: All listed substitute parts carry RoHS3 compliance certification. The SMBJ5V0A (Fairchild Semiconductor) does not specify RoHS status in the provided data and requires verification before use in regulated applications.
Q: What packaging formats are available for these substitutes?
A: All substitute parts are available in DO-214AA / SMB surface-mount package format, matching the original SMBJ5.0E3/TR13 mechanical specification. Packaging options vary by manufacturer: Tape & Reel (TR), Cut Tape (CT) with Digi-Reel, or combinations thereof. Verify specific packaging availability with the selected manufacturer.
Q: Does the SZ1SMB5.0AT3G automotive qualification affect general-purpose applications?
A: No. Automotive-grade qualification (AEC-Q101) indicates enhanced reliability testing and quality standards. This part is fully compatible with general-purpose applications and provides additional assurance for mission-critical designs. The automotive qualification does not restrict use in non-automotive applications.
Q: What is the impact of operating temperature range differences?
A: The original SMBJ5.0E3/TR13 operates from -65°C to 150°C. Most Group A substitutes operate from -55°C to 150°C, reducing low-temperature capability by 10°C. The SZ1SMB5.0AT3G and SMBJ5.0A (EVVO Semi) match the full -65 to 150°C range. For applications requiring operation below -55°C, select SZ1SMB5.0AT3G or SMBJ5.0A. For applications limited to -55°C minimum, all Group A substitutes are acceptable.
Q: Can SACB5.0 or SMBSAC5.0-TP be used as direct replacements?
A: These parts are acceptable substitutes only when application requirements permit higher clamping voltage (10V vs. 9.6V) and lower peak pulse current (44A vs. 62.5A). The 0.4V clamping voltage increase may affect circuit protection thresholds. Use these parts only when circuit analysis confirms compatibility with the higher clamping voltage specification.
Q: What inventory considerations apply to these substitutes?
A: Inventory availability varies significantly: SMBJ5.0A-TR (STMicroelectronics) offers 97,388 units; SMBJ5.0A (EVVO Semi) offers 44,310 units; SZ1SMB5.0AT3G (Littelfuse Inc.) offers 111,596 units. The original SMBJ5.0E3/TR13 has 997 units in stock. For high-volume requirements, SMBJ5.0A-TR and SZ1SMB5.0AT3G provide superior supply chain availability.
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