SMLJ8.5AE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ8.5AE3/TR13 is an 8.5V Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, packaged in DO-214AB (SMC) surface mount configuration. This component is designed for general-purpose transient voltage suppression applications and is classified as Active product status. Alternative equivalent parts are necessary to maintain supply chain flexibility, enable component interchangeability across design revisions, and provide sourcing options from multiple manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

SMLJ8.5AE3/TR13

Microchip TechnologyIn Stock: 2820SMLJ8.5AE3/TR13 Datasheet

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1.5SMC10A

Taiwan Semiconductor CorporationIn Stock: 203021.5SMC10A 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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SMCJ8.5A-TP

Micro Commercial CoIn Stock: 3740SMCJ8.5A-TP 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 SMLJ8.5AE3/TR13 are classified into two electrical compatibility categories based on the following key parameters:

Category A - Equivalent Electrical Performance (Direct Pin-Compatible Substitutes): Parts that match all critical electrical parameters: Voltage Reverse Standoff (8.5V typ), Voltage Breakdown (9.44V min), Voltage Clamping (14.4V max @ Ipp), Peak Pulse Current, and Operating Temperature Range. These parts maintain identical functional performance and are interchangeable at the circuit design level.

Category B - Electrical Equivalence with Higher Peak Power Handling: Parts that match the voltage parameters (Reverse Standoff 8.55V typ, Breakdown ~9.5V min, Clamping 14.5V max @ Ipp) but feature significantly higher peak pulse power capability (1.5kW or 3kW versus 300W). These substitutes provide the same voltage protection profile with enhanced power dissipation capability.

The following substitute parts are qualified for use:

• SMCJ8.5A-TP (Micro Commercial Co)
• SMCJ8.5A (EVVO Semi)
• SMCJ8.5A-13-F (Diodes Incorporated)
• SMDJ8.5A (Alpha & Omega Semiconductor Inc.)
• 1.5SMC10A (Taiwan Semiconductor Corporation)

Parameter Comparison

Engineering Selection Recommendations

SMCJ8.5A (EVVO Semi) and SMCJ8.5A-13-F (Diodes Incorporated): These parts are recommended as primary substitutes, offering voltage parameters matching the original SMLJ8.5AE3/TR13 with ROHS3 compliance and Active product status. Both parts maintain the -55 to 150°C operating temperature range and are available in standard supply quantities.

SMCJ8.5A-TP (Micro Commercial Co): Suitable as a substitute with extended operating temperature capability (-55 to 175°C). ROHS3 compliant with Active status and higher inventory availability. Peak pulse power capability (1500W) exceeds the original specification.

SMDJ8.5A (Alpha & Omega Semiconductor Inc.): Qualifies as a substitute offering identical voltage specifications and peak pulse current (208.4A) matching the original part. Features the highest peak pulse power rating (3000W) among substitutes. ROHS3 compliant and Active product status.

1.5SMC10A (Taiwan Semiconductor Corporation): Qualified as a substitute with voltage parameters within acceptable tolerance (Reverse Standoff 8.55V, Breakdown 9.5V, Clamping 14.5V). Higher inventory availability. ROHS3 compliant and Active product status.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.5A-TP be used in place of SMLJ8.5AE3/TR13? A: Yes. SMCJ8.5A-TP maintains all critical voltage parameters (8.5V reverse standoff, 9.4V breakdown, 14.4V clamping) and is pin-compatible in DO-214AB package. The extended operating temperature range (-55 to 175°C) and higher peak pulse power (1500W) are suitable for general-purpose TVS applications.

Q: What is the difference between SMDJ8.5A and SMCJ8.5A in terms of substitution? A: Both parts match voltage specifications. SMDJ8.5A features peak pulse current of 208.4A and power rating of 3000W, matching the original SMLJ8.5AE3/TR13 current rating. SMCJ8.5A has reduced peak pulse current (104.2A) and 1500W power rating, suitable for lower-current transient suppression applications.

Q: Is 1.5SMC10A compatible with SMLJ8.5AE3/TR13? A: Yes, 1.5SMC10A qualifies as a compatible substitute. Voltage parameters are within acceptable engineering tolerance (8.55V reverse standoff versus 8.5V, 14.5V clamping versus 14.4V). Both are surface mount DO-214AB packages, ROHS3 compliant, with -55 to 150°C operating range. Peak pulse current is lower (108A versus 208.4A).

Q: Which substitute has the best thermal performance? A: SMCJ8.5A-TP (Micro Commercial Co) provides extended operating temperature capability to 175°C, compared to 150°C for other substitutes. This additional thermal margin is beneficial for high-ambient-temperature applications.

Q: Are all substitutes ROHS3 compliant? A: Yes, all substitute parts listed (SMCJ8.5A-TP, SMCJ8.5A, SMCJ8.5A-13-F, SMDJ8.5A, and 1.5SMC10A) are ROHS3 compliant and REACH Unaffected, meeting the same regulatory requirements as the original SMLJ8.5AE3/TR13.

Q: What is the primary application difference for 1.5SMC10A? A: The 1.5SMC10A is classified for telecom applications, while other substitutes target general-purpose transient suppression. Voltage specifications overlap sufficiently for direct substitution; however, the telecom classification indicates validation in telecom circuit environments.