SMLJ51CE3/TR13

Part Overview

The SMLJ51CE3/TR13 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This zener-type bidirectional TVS diode operates across an industrial temperature range of -55°C to 150°C and is RoHS3 compliant. Alternative part numbers are necessary to address supply chain considerations, inventory availability, or specific performance requirements in high-current or high-power transient suppression scenarios.

Substiute Parts

SMLJ51CE3/TR13

Microchip TechnologyIn Stock: 786SMLJ51CE3/TR13 Datasheet

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5.0SMDJ51CA

MDE Semiconductor IncIn Stock: 17395.0SMDJ51CA Datasheet

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SMCJ51CA

Good-Ark SemiconductorIn Stock: 29226SMCJ51CA Datasheet

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SMCJ51CA

Good-Ark SemiconductorIn Stock: 29226SMCJ51CA Datasheet

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SMCJ51CA

Good-Ark SemiconductorIn Stock: 29226SMCJ51CA Datasheet

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SMCJ51CA-13-F

Diodes IncorporatedIn Stock: 17291SMCJ51CA-13-F Datasheet

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SMDJ51CA

Alpha & Omega Semiconductor Inc.In Stock: 30124SMDJ51CA Datasheet

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SMLJ51CA

Bourns Inc.In Stock: 1574SMLJ51CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ51CE3/TR13 are classified based on the following critical electrical and mechanical parameters:

Mandatory Compatibility Parameters:

• Voltage - Reverse Standoff (Typ): 51V
• Voltage - Breakdown (Min): 56.7V
• Mounting Type: Surface Mount
• Package / Case: DO-214AB, SMC
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 150°C (TJ)

Performance Variation Parameters (acceptable substitutes may differ):

• Voltage - Clamping (Max) @ Ipp: 82.4V to 91.1V
• Current - Peak Pulse (10/1000µs): 18.2A to 60.7A
• Power - Peak Pulse: 1500W to 5000W

All listed substitute parts maintain the core 51V standoff voltage specification, identical breakdown voltage, and compatible surface-mount DO-214AB/SMC packaging. Substitutes are available from manufacturers including MDE Semiconductor Inc., Good-Ark Semiconductor, Diodes Incorporated, Alpha & Omega Semiconductor Inc., and Bourns Inc. Variations in clamping voltage and peak pulse current reflect different product lines within equivalent voltage protection specifications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and RoHS3 compliance, qualifying them for new designs and production environments. The SMLJ51CE3/TR13 (Microchip Technology) and SMDJ51CA (Alpha & Omega Semiconductor Inc.) offer comparable current ratings (37A and 36.5A respectively) and power dissipation (300W and 3000W), making them functionally equivalent for applications requiring consistent pulse current handling. The 5.0SMDJ51CA (MDE Semiconductor Inc.) provides enhanced peak pulse power capacity (5000W) and the highest peak pulse current (60.7A), suitable for applications demanding superior transient energy absorption. The SMCJ51CA variants and SMCJ51CA-13-F offer lower power ratings (1500W) with proportionally reduced peak pulse current (18.2A), appropriate for lower-energy transient suppression requirements. Selection between these options depends on application-specific transient energy levels and component availability rather than functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can I substitute SMCJ51CA for SMLJ51CE3/TR13?

A: Yes. Both parts share identical reverse standoff voltage (51V), breakdown voltage (56.7V), bidirectional channel configuration, temperature range (-55°C to 150°C), and DO-214AB/SMC surface-mount packaging. The SMCJ51CA operates at lower power (1500W vs 300W) and lower peak pulse current (18.2A vs 37A), making it suitable for applications with reduced transient energy requirements.

Q: What is the difference between the 5.0SMDJ51CA and other substitutes?

A: The 5.0SMDJ51CA (MDE Semiconductor Inc.) is distinguished by superior power dissipation capacity (5000W) and peak pulse current (60.7A). This part addresses applications requiring absorption of larger transient events while maintaining the same 51V protection voltage and operating temperature range.

Q: Are all listed substitutes DO-214AB compatible?

A: Yes. All substitute parts utilize the DO-214AB package in SMC configuration, ensuring mechanical and pin compatibility with standard surface-mount assembly processes. Mounting footprints and soldering requirements are identical across all listed parts.

Q: Does the clamping voltage difference between 82.4V and 91.1V affect substitution?

A: Clamping voltage variation within the range 82.4V to 91.1V reflects different manufacturer voltage regulation curves at peak pulse conditions. The 51V standoff voltage specification—the critical parameter for circuit protection—remains constant across all parts. Selection of specific clamping voltage depends on circuit tolerance requirements for transient peaks.

Q: Which substitute offers the best balance of availability and performance?

A: SMDJ51CA (Alpha & Omega Semiconductor Inc.) and SMLJ51CA (Bourns Inc.) provide equivalent specifications with 36.5A and 36.4A peak pulse current respectively and 3000W power dissipation, closely matching the original part's 37A rating. Both manufacturers maintain active product status and ROHS3 compliance.

Q: Are all parts REACH compliant?

A: All listed substitutes carry REACH Unaffected or REACH Affected status. REACH-affected parts (SMLJ51CA from Bourns Inc.) remain fully functional and certifiable for industrial applications; status designation refers to regulatory substance assessment rather than functional capability.