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SMLJ6.5AE3/TR13 Equivalent & Substitute Parts
Part Overview
The SMLJ6.5AE3/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 operates with a 6.5V reverse standoff voltage and provides 11.2V maximum clamping voltage at peak pulse current, with a peak pulse power rating of 300W in the DO-214AB (SMC) package format.
The SMLJ6.5AE3/TR13 is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and package specifications to ensure direct interchangeability or functional equivalence in circuit applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 6.5 | V |
| Voltage - Breakdown (Min) | 7.22 | V |
| Voltage - Clamping (Max) @ Ipp | 11.2 | V |
| Current - Peak Pulse (10/1000µs) | 267.9 | A |
| Power - Peak Pulse | 300 | W |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package / Case | DO-214AB, SMC | — |
| Mounting Type | Surface Mount | — |
| Type | Zener | — |
| Unidirectional Channels | 1 | — |
Substitute Part Grouping Explanation
Substitute parts for the SMLJ6.5AE3/TR13 are classified into two categories based on electrical and mechanical compatibility:
Direct Substitutes (Full Electrical Equivalence): Parts that match all critical electrical parameters including reverse standoff voltage (6.5V), breakdown voltage (7.22V minimum), clamping voltage (11.2V maximum), and peak pulse current (267.9A) with peak pulse power ratings of 3000W or higher. These parts provide complete functional interchangeability with identical voltage protection characteristics and superior power handling capability.
Similar Substitutes (Voltage-Compatible, Reduced Power Rating): Parts that maintain identical voltage specifications (6.5V standoff, 7.22V breakdown, 11.2V clamping) but operate at reduced peak pulse current (140A or 133.9A) and lower peak pulse power ratings (1500W). These parts are suitable for applications where the full 267.9A peak pulse current is not required, providing cost-effective alternatives while maintaining voltage protection performance.
Substitution Criteria:
- Voltage - Reverse Standoff: 6.5V (required match)
- Voltage - Clamping (Max) @ Ipp: 11.2V (required match)
- Package / Case: DO-214AB, SMC (required match)
- Mounting Type: Surface Mount (required match)
- Type: Zener, Unidirectional (required match)
- Operating Temperature: -55°C minimum to 150°C minimum (required match)
- RoHS3 Compliance: Required
- Current - Peak Pulse: 267.9A or higher (for direct substitutes); 140A or higher (for similar substitutes)
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (V) | Voltage - Breakdown Min (V) | Voltage - Clamping Max @ Ipp (V) | Current - Peak Pulse (A) | Power - Peak Pulse (W) | Operating Temp (°C) | Package | RoHS3 |
|---|---|---|---|---|---|---|---|---|---|
| SMLJ6.5AE3/TR13 | Microchip Technology | 6.5 | 7.22 | 11.2 | 267.9 | 300 | -55 to 150 | DO-214AB, SMC | Yes |
| SMDJ6.5A | Alpha & Omega Semiconductor Inc. | 6.5 | 7.22 | 11.2 | 267.9 | 3000 | -55 to 150 | DO-214AB, SMC | Yes |
| SMLJ6.5A | Bourns Inc. | 6.5 | 7.22 | 11.2 | 267.9 | 3000 | -55 to 150 | DO-214AB, SMC | Yes |
| SMLJ6.5A-TP | Micro Commercial Co | 6.5 | 7.22 | 11.2 | 267.9 | 3000 | -55 to 175 | DO-214AB, SMC | Yes |
| SMCJ6.5A | Taiwan Semiconductor Corporation | 6.5 | 7.22 | 11.2 | 140 | 1500 | -55 to 150 | DO-214AB, SMC | Yes |
| SMCJ6.5A-13-F | Diodes Incorporated | 6.5 | 7.22 | 11.2 | 133.9 | 1500 | -55 to 150 | DO-214AB, SMC | Yes |
Engineering Selection Recommendations
Direct Substitutes with Enhanced Power Rating:
The SMDJ6.5A (Alpha & Omega Semiconductor Inc.), SMLJ6.5A (Bourns Inc.), and SMLJ6.5A-TP (Micro Commercial Co) are direct electrical equivalents to the SMLJ6.5AE3/TR13. All three parts maintain identical voltage specifications (6.5V standoff, 7.22V breakdown, 11.2V clamping) and peak pulse current (267.9A) while providing 3000W peak pulse power capability, representing a 10-fold increase over the original 300W rating. These parts are suitable for applications requiring the full specified peak pulse current and offer superior transient energy absorption capacity.
The SMLJ6.5A-TP variant from Micro Commercial Co extends the maximum operating junction temperature to 175°C, providing enhanced thermal performance compared to the standard 150°C rating of the SMLJ6.5AE3/TR13. This extended temperature range is beneficial for high-temperature circuit environments.
All direct substitutes maintain RoHS3 compliance and MSL 1 (unlimited) moisture sensitivity level, ensuring compatibility with standard manufacturing and storage practices.
Similar Substitutes with Reduced Power Rating:
The SMCJ6.5A (Taiwan Semiconductor Corporation) and SMCJ6.5A-13-F (Diodes Incorporated) maintain identical voltage protection characteristics but operate at reduced peak pulse current levels (140A and 133.9A respectively) with 1500W peak pulse power ratings. These parts are suitable for applications where transient energy levels do not exceed the 1500W threshold, providing cost-effective alternatives while maintaining full voltage clamping performance.
Both similar substitutes maintain RoHS3 compliance and operate within the -55°C to 150°C temperature range, matching the original part's thermal specifications.
Product Status and Compliance:
All identified substitute parts are classified as active products with full RoHS3 compliance. The SMLJ6.5A from Bourns Inc. carries REACH Affected status, while all other substitutes maintain REACH Unaffected status. All parts are assigned ECCN EAR99 classification and HTSUS code 8541.10.0080.
Frequently Asked Questions (FAQ)
Q: Can the SMDJ6.5A, SMLJ6.5A, or SMLJ6.5A-TP be used as direct replacements for the SMLJ6.5AE3/TR13?
A: Yes. The SMDJ6.5A, SMLJ6.5A, and SMLJ6.5A-TP are direct electrical equivalents with identical voltage specifications (6.5V standoff, 7.22V breakdown, 11.2V clamping) and peak pulse current (267.9A). All three parts are packaged in DO-214AB (SMC) surface-mount format and maintain RoHS3 compliance. The primary difference is the enhanced peak pulse power rating (3000W versus 300W), which provides superior transient energy absorption without affecting circuit protection performance.
Q: What is the difference between direct substitutes and similar substitutes?
A: Direct substitutes (SMDJ6.5A, SMLJ6.5A, SMLJ6.5A-TP) match all electrical parameters including peak pulse current (267.9A) and provide 3000W peak pulse power capability. Similar substitutes (SMCJ6.5A, SMCJ6.5A-13-F) maintain identical voltage specifications but operate at reduced peak pulse current (140A or 133.9A) and 1500W peak pulse power. Selection depends on the maximum transient energy expected in the application circuit.
Q: Are all substitute parts available in the same package format?
A: Yes. All identified substitute parts are packaged in DO-214AB (SMC) surface-mount format, ensuring mechanical and footprint compatibility with the SMLJ6.5AE3/TR13. This allows direct board-level substitution without PCB redesign or rework.
Q: Does the SMLJ6.5A-TP offer any advantages over other direct substitutes?
A: The SMLJ6.5A-TP from Micro Commercial Co extends the maximum operating junction temperature to 175°C, compared to the standard 150°C rating of the SMLJ6.5AE3/TR13 and other direct substitutes. This extended temperature range provides enhanced thermal margin in high-temperature circuit environments. All other electrical and mechanical specifications remain identical to the SMLJ6.5A.
Q: What is the inventory status of substitute parts?
A: The SMLJ6.5A (Bourns Inc.) maintains the highest inventory level at 15,277 pieces. The SMCJ6.5A (Taiwan Semiconductor Corporation) is available in large quantity at 84,100 pieces. The SMDJ6.5A (Alpha & Omega Semiconductor Inc.) is available at 12,300 pieces. The SMLJ6.5A-TP (Micro Commercial Co) is available at 3,695 pieces. The SMCJ6.5A-13-F (Diodes Incorporated) is available at 4,090 pieces.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All identified substitute parts maintain full RoHS3 compliance. The SMLJ6.5A from Bourns Inc. carries REACH Affected status, while all other substitutes maintain REACH Unaffected status. All parts are classified as EAR99 for export control purposes.
Q: Can the SMCJ6.5A or SMCJ6.5A-13-F be used in applications requiring the full 267.9A peak pulse current?
A: The SMCJ6.5A and SMCJ6.5A-13-F are rated for peak pulse currents of 140A and 133.9A respectively, which are below the 267.9A specification of the SMLJ6.5AE3/TR13. These parts are suitable only for applications where the maximum transient current does not exceed their rated values. For applications requiring the full 267.9A peak pulse current, direct substitutes (SMDJ6.5A, SMLJ6.5A, SMLJ6.5A-TP) must be used.
Q: What is the moisture sensitivity level (MSL) of the substitute parts?
A: All identified substitute parts maintain MSL 1 (Unlimited) moisture sensitivity level, matching the SMLJ6.5AE3/TR13. This classification indicates no moisture-related storage or handling restrictions and is compatible with standard manufacturing and storage environments.
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