SMLJ8.0E3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ8.0E3/TR13 is a unidirectional Zener-type transient voltage suppressor (TVS) diode manufactured by Microchip Technology. This surface mount component operates in the 8V reverse standoff voltage class and is designed for general-purpose transient voltage suppression applications. The device features a 15V maximum clamping voltage at peak pulse current and 300W peak pulse power dissipation capability in a DO-214AB (SMC) package.

The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified based on matching electrical characteristics within the 8V to 8.5V reverse standoff voltage range and compatible surface mount packaging.

Substiute Parts

SMLJ8.0E3/TR13

Microchip TechnologyIn Stock: 778SMLJ8.0E3/TR13 Datasheet

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SMCJ8.0A

Taiwan Semiconductor CorporationIn Stock: 9369SMCJ8.0A Datasheet

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SMCJ8.0A-13-F

Diodes IncorporatedIn Stock: 4199SMCJ8.0A-13-F Datasheet

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SMCJ8.5A-13-F

Diodes IncorporatedIn Stock: 1063SMCJ8.5A-13-F Datasheet

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SMCJ8V0A

Fairchild SemiconductorIn Stock: 27225SMCJ8V0A Datasheet

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SMLJ8.0A

Bourns Inc.In Stock: 12900SMLJ8.0A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ8.0E3/TR13 are qualified based on the following electrical and mechanical criteria:

Primary Matching Criteria:

• Reverse standoff voltage: 8V to 8.5V range
• Breakdown voltage minimum: 8.89V to 9.44V range
• Package type: DO-214AB (SMC) surface mount
• Diode type: Zener, unidirectional configuration
• Operating temperature range: -55°C to 150°C (TJ)
• Application class: General-purpose transient voltage suppression

Secondary Compatibility Factors:

• Clamping voltage at peak pulse current: 13.6V to 15V
• Peak pulse current capability: 104.2A to 220.6A
• Peak pulse power dissipation: 300W to 3000W
• RoHS3 compliance status
• Moisture sensitivity level: MSL 1 (Unlimited)

All substitute parts listed maintain compatibility within the specified electrical parameter windows and share identical surface mount packaging specifications. Variations in peak pulse current and power dissipation reflect different manufacturer designs while maintaining the core voltage suppression characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The SMLJ8.0A (Bourns Inc.) and SMCJ8.0A (Taiwan Semiconductor Corporation) are the most direct electrical equivalents to the SMLJ8.0E3/TR13. Both maintain identical reverse standoff voltage (8V), breakdown voltage (8.89V minimum), and operating temperature range (-55°C to 150°C). Both are RoHS3 compliant with MSL 1 rating. The SMLJ8.0A offers higher peak pulse current (220.6A) and power dissipation (3000W) compared to the original part (200A, 300W), providing enhanced transient suppression capability. The SMCJ8.0A provides lower peak pulse current (115A) and higher power dissipation (1500W), suitable for applications with lower current transients.

Secondary Substitutes (Acceptable Compatibility):

The SMCJ8.0A-13-F (Diodes Incorporated) and SMCJ8V0A (Fairchild Semiconductor) maintain the 8V reverse standoff voltage class with clamping voltages of 13.6V, which is within acceptable tolerance of the original 15V specification. Both are RoHS3 compliant surface mount devices in DO-214AB packaging. The SMCJ8.0A-13-F is available in tape and reel packaging with confirmed MSL 1 rating and full temperature specification.

Alternative Substitute (Marginal Compatibility):

The SMCJ8.5A-13-F (Diodes Incorporated) operates at 8.5V reverse standoff voltage with 9.44V minimum breakdown voltage, representing a slight upward shift in the voltage class. This part is suitable only when the application permits operation at the higher voltage threshold. It maintains RoHS3 compliance and MSL 1 rating with full temperature specification.

Compliance and Certification Status:

All recommended primary and secondary substitutes maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental qualification. The SMCJ8V0A lacks specified operating temperature range documentation; verification of thermal performance is necessary for applications requiring full -55°C to 150°C operation.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.0A be used as a direct replacement for SMLJ8.0E3/TR13?

A: Yes. Both parts share identical reverse standoff voltage (8V), breakdown voltage (8.89V minimum), and operating temperature range (-55°C to 150°C). Both are RoHS3 compliant surface mount devices in DO-214AB packaging. The SMCJ8.0A has lower peak pulse current (115A vs. 200A) but higher power dissipation (1500W vs. 300W), making it suitable for applications where the transient current is within its rating.

Q: What is the difference between SMLJ8.0A and SMCJ8.0A?

A: Both maintain the same 8V reverse standoff voltage and 8.89V minimum breakdown voltage. The primary differences are manufacturer (Bourns vs. Taiwan Semiconductor), peak pulse current rating (220.6A vs. 115A), and peak pulse power dissipation (3000W vs. 1500W). The SMLJ8.0A provides higher current handling capability, while the SMCJ8.0A provides higher power dissipation per unit current.

Q: Is SMCJ8.5A-13-F compatible with the original SMLJ8.0E3/TR13?

A: The SMCJ8.5A-13-F operates at 8.5V reverse standoff voltage, which is 0.5V higher than the original 8V specification. This represents a shift to a higher voltage class. Compatibility depends on application requirements. If the circuit design permits operation at 8.5V standoff voltage, this part is electrically compatible. If the design requires strict 8V operation, this part is not recommended.

Q: Do all substitute parts have the same package dimensions?

A: Yes. All listed substitute parts use DO-214AB (SMC) surface mount packaging, which provides identical footprint and mounting characteristics. This ensures direct PCB compatibility without layout modifications.

Q: What is the significance of the clamping voltage difference between 15V (original) and 13.6V (substitutes)?

A: The clamping voltage is the maximum voltage across the TVS diode at peak pulse current. The original SMLJ8.0E3/TR13 clamps at 15V maximum, while most substitutes clamp at 13.6V. Lower clamping voltage provides better transient suppression but may require verification that the protected circuit can tolerate the lower clamping level. Higher clamping voltage (15V) provides more margin but less aggressive suppression.

Q: Are all substitute parts RoHS3 compliant?

A: The primary and secondary substitutes (SMLJ8.0A, SMCJ8.0A, SMCJ8.0A-13-F, SMCJ8.5A-13-F) are confirmed RoHS3 compliant. The SMCJ8V0A (Fairchild) does not have RoHS3 compliance status specified in the provided data. Verification with the manufacturer is necessary if RoHS3 compliance is a design requirement.

Q: What does MSL 1 (Unlimited) mean for these TVS diodes?

A: MSL 1 (Moisture Sensitivity Level 1) with Unlimited rating indicates that these components have no moisture sensitivity restrictions. They can be stored indefinitely without special humidity control and do not require baking before reflow soldering, simplifying supply chain and manufacturing processes.

Q: Can I use SMCJ8V0A if operating temperature specification is not provided?

A: The SMCJ8V0A lacks documented operating temperature range. While it is physically compatible and electrically similar, the absence of thermal specification creates uncertainty for applications requiring guaranteed operation across the full -55°C to 150°C range. Use of this part should be limited to applications where thermal performance has been independently verified or where the operating temperature range is narrower than the full specification.