SMLJ75CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ75CE3/TR13 is a Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, rated for 75V reverse standoff voltage with a 134V maximum clamping voltage. This bidirectional Zener-type TVS diode in DO-214AB surface mount package is designed for general-purpose transient voltage protection in industrial and commercial applications. The part is currently active in production with 766 units in stock. Substitute parts are necessary to ensure design continuity, accommodate supply chain variations, and optimize cost-performance characteristics while maintaining electrical and mechanical compatibility.

Substiute Parts

SMLJ75CE3/TR13

Microchip TechnologyIn Stock: 786SMLJ75CE3/TR13 Datasheet

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5.0SMDJ75CA

MDE Semiconductor IncIn Stock: 93625.0SMDJ75CA Datasheet

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SMCJ75CA

Fairchild SemiconductorIn Stock: 7261SMCJ75CA Datasheet

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SMCJ75CA

Fairchild SemiconductorIn Stock: 7261SMCJ75CA Datasheet

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SMCJ75CA

Fairchild SemiconductorIn Stock: 7261SMCJ75CA Datasheet

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SMDJ75CA

SMC Diode SolutionsIn Stock: 9335SMDJ75CA Datasheet

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SMDJ75CA-T7

LittelfuseIn Stock: 755SMDJ75CA-T7 Datasheet

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SMLJ75CA

Bourns Inc.In Stock: 21471SMLJ75CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ75CE3/TR13 must satisfy the following electrical and mechanical requirements:

Critical Parameters for Substitution:

• Voltage - Reverse Standoff: 75V (all substitutes must match this specification)
• Voltage - Breakdown (Min): 83.3V (all substitutes must match this specification)
• Package / Case: DO-214AB, SMC surface mount (all substitutes must use compatible surface mount packaging)
• Mounting Type: Surface Mount (all substitutes must be surface mount technology)
• Bidirectional Channels: 1 (all substitutes must be bidirectional diodes)
• Type: Zener (all substitutes must be Zener-type TVS diodes)

Substitution Logic: The identified substitute parts maintain identical reverse standoff voltage (75V) and breakdown voltage (83.3V) specifications, ensuring functional compatibility in transient voltage protection circuits. All substitute parts are packaged in DO-214AB surface mount format, allowing direct board-level interchange. Variations in maximum clamping voltage (121V to 134V) and peak pulse current/power ratings reflect manufacturer differences and process variations inherent to TVS diode technology, but do not prevent substitution provided circuit design accounts for these parametric tolerances. All substitute parts are Zener-type bidirectional TVS diodes rated for general-purpose applications across the specified operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts meet ROHS3 compliance and are active products in current production, ensuring regulatory compatibility and supply chain continuity with the SMLJ75CE3/TR13.

Primary Selection Candidates: The SMDJ75CA (SMC Diode Solutions) and SMLJ75CA (Bourns Inc.) offer electrical parameters closely aligned with the original specification, with peak pulse power ratings of 3000W matching the general-purpose TVS diode category. Both parts maintain the -55°C to 150°C operating temperature range and ROHS3 compliance status, supporting equivalent circuit performance.

Extended Temperature Range Option: The SMDJ75CA-T7 (Littelfuse) extends the minimum operating temperature to -65°C, providing enhanced low-temperature performance for applications requiring expanded environmental specifications. This part maintains identical electrical ratings (75V standoff, 83.3V breakdown, 121V clamping) and ROHS3 compliance.

Higher Current Capacity Option: The 5.0SMDJ75CA (MDE Semiconductor Inc) provides significantly higher peak pulse current (41.4A) and power dissipation (5000W), suitable for applications requiring enhanced transient energy absorption while maintaining the 75V/83.3V voltage specifications and ROHS3 compliance.

Cost-Optimized Option: The SMCJ75CA (Fairchild Semiconductor) offers a lower power rating (1500W) with reduced peak pulse current (12.4A), applicable to designs with lower transient energy requirements while maintaining voltage compatibility and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can all substitute parts be used interchangeably with the SMLJ75CE3/TR13 in existing PCB designs?

A: All substitute parts use identical DO-214AB surface mount packaging, enabling direct PCB board-level interchange without layout modifications. However, circuit designs must account for variations in maximum clamping voltage and peak pulse current ratings. The original part specifies 134V maximum clamping voltage; substitute parts specify 121V maximum clamping voltage. For designs operating near voltage thresholds, validate that the lower clamping voltage remains within acceptable circuit operating margins.

Q: What are the key electrical differences between the original and substitute parts?

A: The primary difference is maximum clamping voltage: SMLJ75CE3/TR13 specifies 134V, while all substitute parts specify 121V. Peak pulse current and power dissipation vary by manufacturer: the original provides 22.4A at 300W, while substitutes range from 12.4A/1500W (SMCJ75CA) to 41.4A/5000W (5.0SMDJ75CA). Reverse standoff voltage (75V) and breakdown voltage (83.3V) are identical across all parts, ensuring voltage regulation compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes, all identified substitute parts are ROHS3 compliant, matching the original SMLJ75CE3/TR13 compliance status. This ensures regulatory compatibility for applications requiring RoHS certification.

Q: Which substitute part should be selected for applications with low transient energy requirements?

A: The SMCJ75CA (Fairchild Semiconductor) is rated for 1500W peak pulse power, the lowest among substitutes. This part is suitable for designs where transient energy absorption is minimal. All voltage specifications remain identical to the original part.

Q: Does operating temperature range affect part selection?

A: Most substitute parts operate over -55°C to 150°C, matching the original specification. The SMDJ75CA-T7 (Littelfuse) extends the minimum temperature to -65°C, making it suitable for applications requiring low-temperature operation. Standard temperature range (−55°C to 150°C) substitutes are appropriate for typical industrial and commercial applications.

Q: What is the impact of different moisture sensitivity levels across substitute parts?

A: All substitute parts maintain MSL Level 1 (Unlimited), the same moisture sensitivity rating as the original SMLJ75CE3/TR13. This ensures equivalent moisture-related reliability and handling requirements throughout the product lifecycle.