SMCJ8.5E3/TR13 Equivalent & Substitute Parts

Part Overview

The SMCJ8.5E3/TR13 is an active-status transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. The device operates across an industrial temperature range of -65°C to 150°C and is packaged in DO-214AB (SMC) format with tape and reel delivery. Substitute parts are necessary to address inventory availability, lead time constraints, or sourcing flexibility while maintaining equivalent electrical and mechanical performance within specified parameter tolerances.

Substiute Parts

SMCJ8.5E3/TR13

Microchip TechnologyIn Stock: 838SMCJ8.5E3/TR13 Datasheet

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1.5SMC10A

Taiwan Semiconductor CorporationIn Stock: 203021.5SMC10A Datasheet

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1.5SMC10A-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 20921.5SMC10A-E3/57T Datasheet

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SMCJ8.5A

EVVO SemiIn Stock: 9502SMCJ8.5A Datasheet

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SMCJ8.5A

EVVO SemiIn Stock: 9502SMCJ8.5A Datasheet

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SMCJ8.5A-13-F

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

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SMDJ8.5A

Alpha & Omega Semiconductor Inc.In Stock: 12477SMDJ8.5A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMCJ8.5E3/TR13 are qualified based on the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 8.5V nominal operating point
• Voltage - Clamping (Max) @ Ipp: Maximum 15V clamping threshold
• Current - Peak Pulse (10/1000µs): Minimum 100A pulse current capability
• Power - Peak Pulse: Minimum 1500W peak power dissipation
• Package / Case: DO-214AB (SMC) surface-mount format
• Operating Temperature Range: Support for -55°C to -65°C minimum and 150°C maximum
• RoHS Compliance: ROHS3 Compliant status

Substitutes are organized into two categories:

Category A: Direct Equivalents (1.5SMC10A, 1.5SMC10A-E3/57T, SMCJ8.5A, SMCJ8.5A-13-F) These parts operate within ±0.05V of the reverse standoff voltage, clamp between 14.4V and 14.5V, and deliver 100A+ peak pulse current while maintaining 1500W power dissipation in identical or compatible surface-mount packages.

Category B: Higher Power Alternative (SMDJ8.5A) This part maintains electrical compatibility across voltage and current parameters while providing double the peak power dissipation (3000W), suitable for applications requiring enhanced thermal margin.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Category A): All five alternative part numbers meet the mandatory electrical and thermal requirements of the SMCJ8.5E3/TR13. All substitute candidates are active-status products with ROHS3 compliance and REACH Unaffected status, ensuring compliance with current environmental and export regulations. Selection among 1.5SMC10A, 1.5SMC10A-E3/57T, SMCJ8.5A, and SMCJ8.5A-13-F should be based on supply chain availability and procurement lead time.

1.5SMC10A-E3/57T (Vishay) and 1.5SMC10A-E3/57T (Vishay) support the full operating temperature range of -65°C to 150°C, matching the original design specification. The 1.5SMC10A (Taiwan Semiconductor Corporation) operates to -55°C minimum, suitable for applications with relaxed low-temperature requirements. SMCJ8.5A variants (EVVO Semi and Diodes Incorporated) are functionally equivalent with identical voltage and power ratings.

Alternative Substitute (Category B): The SMDJ8.5A (Alpha & Omega Semiconductor Inc.) maintains voltage compatibility with identical reverse standoff and clamping characteristics but provides 3000W peak power dissipation versus 1500W, offering design margin for applications with transient stress uncertainty or thermal cycling concerns. This part is appropriate only when the additional power rating does not create circuit-level complications.

Frequently Asked Questions (FAQ)

Q: Can I use any substitute part as a direct 1:1 replacement? A: Yes, all listed substitute parts maintain voltage-clamping characteristics within the specified operating window (14.4V–14.5V versus 15V maximum). Peak pulse current ratings (100A–208.4A) exceed the original specification. All parts are DO-214AB (SMC) surface-mount packages with identical footprints. No circuit redesign is required.

Q: What is the difference between the 1500W and 3000W variants? A: The 1500W parts (original and Category A substitutes) and the 3000W SMDJ8.5A variant handle identical peak pulse currents and voltage clamping. The higher power rating of SMDJ8.5A indicates increased thermal dissipation capability during transient events, providing operational margin for applications with repetitive or high-stress transient environments. Select based on thermal design analysis of your specific application.

Q: Does operating temperature range affect substitution? A: The original SMCJ8.5E3/TR13 operates across -65°C to 150°C. The 1.5SMC10A (TSC) and SMCJ8.5A variants (both manufacturers) specify -55°C minimum operation. If your application requires guaranteed performance below -55°C, select 1.5SMC10A-E3/57T (Vishay) or the original SMCJ8.5E3/TR13. For applications with -55°C to 150°C requirements, all substitutes are functionally equivalent.

Q: Are all substitute parts RoHS and REACH compliant? A: Yes. All substitute parts listed carry ROHS3 Compliant designation. All parts are REACH Unaffected status, ensuring no environmental or export restrictions on direct part substitution.

Q: How do I select between EVVO Semi and Diodes Incorporated SMCJ8.5A variants? A: Both SMCJ8.5A offerings from EVVO Semi and Diodes Incorporated are electrically and mechanistically identical, with identical voltage, current, and package specifications. Selection is based on inventory availability and established supplier relationships within your procurement organization.

Q: Is the Vishay 1.5SMC10A-E3/57T series designation significant? A: The 1.5SMC10A belongs to the Vishay 1.5SMC and TransZorb® series. These designations indicate manufacturer lineage and process technology but do not affect electrical substitution suitability. All electrical parameters remain within the specified operating window for this application.