SMCJ8.5CE3/TR13

Part Overview

The SMCJ8.5CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, classified as a Zener-type bidirectional device in the DO-214AB (SMC) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 8.5V reverse standoff voltage and 15V maximum clamping voltage at peak pulse current. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative models are necessary to accommodate varying inventory availability, manufacturing source preferences, thermal specifications, and application-specific clamping voltage requirements across different OEMs.

Substiute Parts

SMCJ8.5CE3/TR13

Microchip TechnologyIn Stock: 880SMCJ8.5CE3/TR13 Datasheet

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1.5SMC10CA

Taiwan Semiconductor CorporationIn Stock: 166721.5SMC10CA Datasheet

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1.5SMC10CA-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 10241.5SMC10CA-E3/57T Datasheet

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SM15T10CA

STMicroelectronicsIn Stock: 17516SM15T10CA Datasheet

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SMCJ11CA-13-F

Diodes IncorporatedIn Stock: 3677SMCJ11CA-13-F Datasheet

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SMCJ8.5CA

Taiwan Semiconductor CorporationIn Stock: 15234SMCJ8.5CA Datasheet

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SMCJ8.5CA-13-F

Diodes IncorporatedIn Stock: 1164SMCJ8.5CA-13-F Datasheet

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SMDJ8.5CA

Alpha & Omega Semiconductor Inc.In Stock: 12246SMDJ8.5CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the SMCJ8.5CE3/TR13 is determined by the following critical electrical and mechanical parameters:

Reverse Standoff Voltage (Typ): Must be within the 8.5V ± tolerance band to ensure proper circuit protection threshold Voltage Breakdown (Min): Minimum 8.89V required to maintain consistent device triggering characteristics Voltage Clamping (Max) @ Ipp: Acceptable range 14.4V to 18.6V; devices with clamping voltage greater than 15V at rated peak pulse current are usable in applications where slightly higher transient voltages are tolerable Current - Peak Pulse (10/1000µs): Minimum 82.4A; devices with higher pulse current ratings provide equivalent or enhanced protection Power - Peak Pulse: 1500W minimum; the SMDJ8.5CA variant at 3000W provides enhanced capability Package / Case: All substitutes maintain DO-214AB / SMC surface mount form factor for footprint compatibility Operating Temperature: Acceptable range -55°C to -65°C minimum and 150°C maximum RoHS Status / MSL: All substitutes maintain ROHS3 compliance and MSL 1 rating

Parameter Comparison

Engineering Selection Recommendations

Primary Equivalents (Preferred Substitutes): SMCJ8.5CA and SMCJ8.5CA-13-F maintain identical reverse standoff voltage (8.5V), comparable clamping voltage (14.4V), and meet all compliance requirements (ROHS3, MSL 1). These parts are suitable direct replacements for the main part number with minimal circuit impact.

Extended Temperature Range Compatibility: 1.5SMC10CA-E3/57T provides the same -65°C to 150°C operating temperature range as the SMCJ8.5CE3/TR13, making it suitable for applications with demanding thermal specifications. This variant maintains 8.55V standoff voltage and 14.5V clamping voltage.

Enhanced Protection Variants: SM15T10CA and SMDJ8.5CA offer higher peak pulse current ratings (538A and 208.4A respectively) and clamping voltages (18.6V and 3000W power rating for SMDJ8.5CA). These are suitable where circuit protection margins require elevated pulse handling or where higher energy dissipation capacity is required.

Limited Substitution: SMCJ11CA-13-F operates at 11V reverse standoff voltage and 18.2V clamping voltage, representing a higher voltage protection class. Selection of this variant requires circuit design verification.

All listed substitutes maintain DO-214AB / SMC surface mount packaging, ROHS3 compliance, and MSL 1 rating, ensuring compatibility with existing PCB designs and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.5CA be directly substituted for SMCJ8.5CE3/TR13? A: Yes. Both parts share 8.5V reverse standoff voltage, 14.4V clamping voltage, and meet identical compliance standards (ROHS3, MSL 1). The primary difference is the manufacturer and packaging designation.

Q: What is the significance of clamping voltage variation across substitute parts? A: Clamping voltage determines the maximum transient voltage that the TVS diode allows to appear across a protected circuit node. The main part specifies 15V maximum clamping at peak pulse current. Substitutes with 14.4V to 14.5V clamping provide tighter transient suppression. Parts with higher clamping voltages (18.2V to 18.6V) reduce transient energy dissipation in the diode but allow slightly higher overvoltage at the protected circuit node. Selection depends on protected circuit voltage tolerance specifications.

Q: Why does SMDJ8.5CA have different power rating (3000W vs 1500W)? A: SMDJ8.5CA is a higher-power variant of the 8.5V standoff voltage class, with enhanced thermal characteristics and larger die size within the same DO-214AB package outline. The 3000W rating provides doubled energy dissipation capacity for applications experiencing repetitive or sustained transient events.

Q: Are all listed substitutes qualified for the same temperature range as SMCJ8.5CE3/TR13? A: The main part operates -65°C to 150°C. Most substitutes operate -55°C to 150°C. The exception is 1.5SMC10CA-E3/57T, which matches the -65°C minimum temperature. Applications requiring -65°C operation should specify this variant or the original part.

Q: What packaging considerations apply to these TVS diode substitutes? A: All listed substitutes use DO-214AB surface mount package (SMC footprint), ensuring mechanical and electrical compatibility with PCB designs specified for SMCJ8.5CE3/TR13. Tape & Reel and Cut Tape packaging options vary by manufacturer but do not affect component performance or PCB mounting.

Q: Can SMCJ11CA-13-F be used as a substitute in all applications? A: SMCJ11CA-13-F operates at a higher voltage class (11V reverse standoff vs 8.5V). It is suitable only where circuit design permits higher transient voltage thresholds. Substitution requires circuit design verification and is not interchangeable for all applications.