SMLJ6.5E3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ6.5E3/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 12.3V maximum clamping voltage at peak pulse current of 243.9A. The part is Active status and RoHS3 compliant, making it suitable for modern electronic circuit protection requirements. Equivalent and substitute parts are identified based on matching electrical characteristics within the 6.5V voltage class and compatible DO-214AB/SMC package specifications.

Substiute Parts

SMLJ6.5E3/TR13

Microchip TechnologyIn Stock: 1192SMLJ6.5E3/TR13 Datasheet

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SMCJ6.5A

Taiwan Semiconductor CorporationIn Stock: 84190SMCJ6.5A Datasheet

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SMCJ6.5A

Taiwan Semiconductor CorporationIn Stock: 84190SMCJ6.5A Datasheet

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SMCJ6.5A-13-F

Diodes IncorporatedIn Stock: 4141SMCJ6.5A-13-F Datasheet

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SMDJ6.5A

Alpha & Omega Semiconductor Inc.In Stock: 12326SMDJ6.5A Datasheet

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SMLJ6.5A

Bourns Inc.In Stock: 15372SMLJ6.5A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ6.5E3/TR13 are qualified based on the following criteria:

Matching Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 6.5V
• Voltage - Breakdown (Min): 7.22V
• Unidirectional Channels: 1
• Type: Zener
• Package / Case: DO-214AB or SMC equivalent
• Operating Temperature Range: -55°C to 150°C (TJ)
• RoHS3 Compliance: Required

Allowable Variations:

• Voltage - Clamping (Max) @ Ipp: 11.2V to 12.3V (within protection circuit tolerance)
• Current - Peak Pulse (10/1000µs): 133.9A to 267.9A (higher ratings provide enhanced surge capacity)
• Power - Peak Pulse: 300W to 3000W (higher ratings acceptable for same application)

All substitute parts maintain identical voltage class specifications and thermal operating range, ensuring direct functional compatibility in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

All substitute parts listed maintain Active product status and RoHS3 compliance, meeting regulatory and supply chain requirements equivalent to the SMLJ6.5E3/TR13.

Voltage Class Compatibility:

All substitute parts operate within the 6.5V reverse standoff voltage class with identical 7.22V minimum breakdown voltage. Clamping voltage variations (11.2V to 12.3V) remain within acceptable protection circuit tolerances for general-purpose applications.

Current and Power Rating Considerations:

• SMCJ6.5A and SMCJ6.5A-13-F: Lower peak pulse current (140A, 133.9A) and power ratings (1500W) suitable for applications with reduced surge requirements
• SMDJ6.5A and SMLJ6.5A: Higher peak pulse current (267.9A) and power ratings (3000W) provide enhanced protection margin for demanding transient environments

Packaging and Thermal Specifications:

All parts utilize DO-214AB/SMC surface-mount packages with identical -55°C to 150°C operating temperature range, ensuring direct PCB compatibility and thermal performance equivalence.

Compliance Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected or affected status consistent with modern manufacturing standards. Selection should verify REACH compliance requirements for specific end-use applications.

Frequently Asked Questions (FAQ)

Q: Can SMCJ6.5A substitute for SMLJ6.5E3/TR13 in all applications?

A: SMCJ6.5A is electrically compatible within the 6.5V voltage class. The lower peak pulse current (140A vs. 243.9A) and power rating (1500W vs. 300W) are acceptable for applications where surge transients do not exceed these specifications. Verify circuit transient requirements before substitution.

Q: What is the difference between SMDJ6.5A and SMLJ6.5A?

A: Both parts share identical electrical specifications (6.5V standoff, 11.2V clamping, 267.9A peak pulse, 3000W power). The primary difference is manufacturer: SMDJ6.5A is manufactured by Alpha & Omega Semiconductor Inc., while SMLJ6.5A is manufactured by Bourns Inc. Both are functionally equivalent.

Q: Are all substitute parts in the same DO-214AB package?

A: Yes. All substitute parts use DO-214AB or SMC package designation, which are equivalent surface-mount packages. PCB footprints and soldering procedures are identical across all listed parts.

Q: Does lower peak pulse current affect circuit protection?

A: Peak pulse current rating indicates the maximum transient current the diode can suppress. Lower ratings (140A, 133.9A) are suitable for circuits with proportionally lower transient energy. Applications with higher transient currents require parts with higher peak pulse ratings (243.9A or above).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant, meeting regulatory requirements for hazardous substance restrictions in electronic components.

Q: What is the significance of clamping voltage variation (11.2V vs. 12.3V)?

A: Clamping voltage determines the maximum voltage the protected circuit experiences during a transient event. The 1.1V difference between SMLJ6.5E3/TR13 (12.3V) and substitute parts (11.2V) represents lower peak voltage stress on downstream components, which is generally beneficial for circuit protection.

Q: Can I use SMLJ6.5A (3000W) in place of SMLJ6.5E3/TR13 (300W)?

A: Yes. SMLJ6.5A provides higher power dissipation capability (3000W vs. 300W) while maintaining identical voltage specifications. Higher power ratings are acceptable substitutes for lower-rated applications and provide additional thermal margin.