SMLJ40CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ40CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface mount applications. This bidirectional zener diode operates with a 40V reverse standoff voltage and 71.4V maximum clamping voltage, delivering 42A peak pulse current in a compact DO-214AB (SMC) package. The part is active in production status and RoHS3 compliant. Alternative models are evaluated based on compatibility across electrical parameters and mechanical package specifications to support supply chain flexibility and design optimization.

Substiute Parts

SMLJ40CE3/TR13

Microchip TechnologyIn Stock: 1196SMLJ40CE3/TR13 Datasheet

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5.0SMDJ40CA

MDE Semiconductor IncIn Stock: 53915.0SMDJ40CA Datasheet

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SMC3K40CA-M3/57

Vishay General Semiconductor - Diodes DivisionIn Stock: 17683SMC3K40CA-M3/57 Datasheet

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SMCJ40CA

MDDIn Stock: 80210SMCJ40CA Datasheet

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SMCJ40CA

MDDIn Stock: 80210SMCJ40CA Datasheet

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SMCJ40CA

MDDIn Stock: 80210SMCJ40CA Datasheet

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SMCJ40CA-13-F

Diodes IncorporatedIn Stock: 2024SMCJ40CA-13-F Datasheet

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SMCJ40CA-TR

STMicroelectronicsIn Stock: 10315SMCJ40CA-TR Datasheet

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SMDJ40CA

Alpha & Omega Semiconductor Inc.In Stock: 8789SMDJ40CA Datasheet

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SMLJ40CA

Bourns Inc.In Stock: 20328SMLJ40CA Datasheet

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SMLJ40CA-TP

Micro Commercial CoIn Stock: 9701SMLJ40CA-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution validity is determined by strict alignment on the following electrical and mechanical parameters:

Primary Compatibility Parameters:

• Voltage - Reverse Standoff (Typ): 40V
• Voltage - Breakdown (Min): 44.4V
• Package / Case: DO-214AB, SMC
• Bidirectional Channels: 1
• Mounting Type: Surface Mount
• Applications: General Purpose

Secondary Consideration Parameters:

• Voltage - Clamping (Max) @ Ipp: Acceptable range 64.5V to 84V
• Current - Peak Pulse (10/1000µs): Acceptable range 23.2A to 119A
• Power - Peak Pulse: Acceptable range 1.5kW to 5kW
• Operating Temperature Range: Must encompass -55°C to 150°C
• RoHS and Compliance Status: ROHS3 Compliant, REACH Unaffected

Substitute parts maintain identical reverse standoff and breakdown voltage specifications while accommodating variations in clamping voltage, peak pulse current, and power dissipation characteristics. All listed substitutes share the DO-214AB SMC package footprint and surface mount configuration, ensuring mechanical and electrical pin compatibility within the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and REACH Unaffected or REACH Affected status consistent with the primary part specification. Selection among substitutes depends on application-specific power dissipation and current handling requirements within the standardized DO-214AB SMC footprint. Parts with higher peak power ratings (5kW) and peak current capabilities (77.6A, 119A) are suitable for high-energy transient environments. Parts with lower power ratings (1.5kW) and moderate current handling (23.2A–23.3A) are appropriate for general-purpose signal-line protection. The SMLJ40CA-TP variant offers an extended upper operating temperature of 175°C, advantageous for elevated-temperature applications. All parts are produced by established semiconductor manufacturers and are actively maintained in production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: What determines whether a part can substitute for the SMLJ40CE3/TR13? A: Substitution requires matching reverse standoff voltage (40V), breakdown voltage (44.4V minimum), and physical package (DO-214AB SMC surface mount). Clamping voltage, peak pulse current, and power dissipation may vary based on application requirements. All substitute parts listed share these core compatibility parameters.

Q: Are there any differences in package footprint between the main part and substitutes? A: No. All substitute parts use the DO-214AB SMC package, ensuring identical PCB footprint and pin compatibility. This allows direct drop-in replacement without layout modifications.

Q: How do clamping voltage differences affect substitution suitability? A: The main part (SMLJ40CE3/TR13) clamps at 71.4V, while most substitutes clamp at 64.5V. Lower clamping voltage provides tighter protection but may increase component stress. Higher clamping voltage (such as the 84V specification in SMCJ40CA-TR) reduces component stress but provides less aggressive protection. Selection depends on the protected circuit's voltage tolerance specifications.

Q: Which substitute offers the highest current handling capability? A: The SMCJ40CA-TR (STMicroelectronics) provides the highest peak pulse current at 119A with an 84V clamp voltage, suitable for high-energy transient suppression applications. The 5.0SMDJ40CA (MDE Semiconductor) offers 77.6A at 5kW peak power for alternative high-current scenarios.

Q: What is the significance of operating temperature range differences? A: The SMLJ40CA-TP (Micro Commercial Co) extends the upper temperature limit to 175°C, enabling operation in thermally demanding environments. Other substitutes maintain the standard -55°C to 150°C range. Application thermal specifications determine whether extended range capability is necessary.

Q: Are all substitutes RoHS3 compliant? A: All substitute parts listed carry ROHS3 compliance status, meeting environmental and regulatory requirements consistent with the primary part. REACH compliance varies between REACH Unaffected and REACH Affected; both statuses align with the original specification parameters.