SMAJ5.0CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMAJ5.0CE3/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 5V reverse standoff voltage and provides clamping at 9.6V maximum, with a peak pulse current rating of 52A. The component is packaged in DO-214AC (SMA) format on tape and reel for automated assembly.

The product maintains Active status and is RoHS3 compliant with unlimited moisture sensitivity rating. Substitute parts are necessary when addressing supply chain constraints, lead time requirements, or when alternative manufacturers' specifications align with application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

SMAJ5.0CE3/TR13

Microchip TechnologyIn Stock: 728SMAJ5.0CE3/TR13 Datasheet

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SMAJ5.0CA

MDDIn Stock: 35308SMAJ5.0CA Datasheet

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SMAJ5.0CA

MDDIn Stock: 35308SMAJ5.0CA Datasheet

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SMAJ5.0CA

MDDIn Stock: 35308SMAJ5.0CA Datasheet

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SMAJ5.0CA-13-F

Diodes IncorporatedIn Stock: 20382SMAJ5.0CA-13-F Datasheet

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SMAJ5.0CA-TP

Micro Commercial CoIn Stock: 19258SMAJ5.0CA-TP Datasheet

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SMAJ5.0CA-TR

STMicroelectronicsIn Stock: 17700SMAJ5.0CA-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMAJ5.0CE3/TR13 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 5V
• Voltage - Breakdown (Min): 6.4V
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Bidirectional Channels: 1
• Type: Zener
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Performance Parameters Allowing Variation:

• Voltage - Clamping (Max) @ Ipp: 9.2V to 13.4V (within application tolerance)
• Current - Peak Pulse (10/1000µs): 43.5A to 174A (higher ratings provide enhanced protection margin)
• Power - Peak Pulse: 400W to 500W (higher ratings acceptable)
• Operating Temperature Range: -55°C to 175°C (encompasses or exceeds original range)

Substitute parts SMAJ5.0CA (MDD), SMAJ5.0CA-13-F (Diodes Incorporated), SMAJ5.0CA-TP (Micro Commercial Co), and SMAJ5.0CA-TR (STMicroelectronics) meet all mandatory criteria while offering variations in clamping voltage and current ratings suitable for equivalent circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

SMAJ5.0CA (MDD) — This substitute maintains identical standoff and breakdown voltages with a marginally lower clamping voltage of 9.2V and reduced peak pulse current of 43.5A. The operating temperature range is -50 to 150°C, which is narrower at the lower bound compared to the original -65°C specification. This part is suitable for applications where the lower temperature limit of -50°C is acceptable and where the reduced current rating does not compromise protection requirements. RoHS3 compliance and unlimited MSL rating are maintained.

SMAJ5.0CA-13-F (Diodes Incorporated) — This substitute offers identical electrical parameters to the MDD variant with clamping at 9.2V and 43.5A peak pulse current. The operating temperature range extends to -55°C, providing improved low-temperature performance compared to MDD. Diodes Incorporated maintains Active product status with full RoHS3 compliance and unlimited MSL rating. This part is packaged in Cut Tape and Digi-Reel format.

SMAJ5.0CA-TP (Micro Commercial Co) — This substitute provides the same 9.2V clamping voltage and 43.5A current rating as other MDD-equivalent variants. The operating temperature range extends to -55 to 175°C, offering the widest high-temperature capability among substitutes. This extended upper temperature limit of 175°C provides additional thermal margin for demanding applications. RoHS3 compliance and unlimited MSL rating are maintained. Packaging is provided on tape and reel.

SMAJ5.0CA-TR (STMicroelectronics) — This substitute differs significantly with a higher clamping voltage of 13.4V and substantially elevated peak pulse current of 174A (measured at 8/20µs pulse width). The higher clamping voltage and current rating provide enhanced transient suppression capability. Operating temperature range is -55 to 150°C. This part is suitable for applications requiring superior surge protection performance. RoHS3 compliance and unlimited MSL rating are maintained.

All substitute parts maintain the mandatory DO-214AC (SMA) package format, surface-mount configuration, bidirectional Zener topology, and regulatory compliance required for direct substitution. Selection among these alternatives depends on specific application requirements regarding clamping voltage tolerance, peak current handling, and operating temperature extremes.

Frequently Asked Questions (FAQ)

Q: Can SMAJ5.0CA (MDD) be used as a direct replacement for SMAJ5.0CE3/TR13?

A: SMAJ5.0CA is electrically compatible for applications where the clamping voltage of 9.2V (versus 9.6V) and peak pulse current of 43.5A (versus 52A) are acceptable. The primary limitation is the operating temperature range of -50 to 150°C, which does not extend to the original -65°C lower bound. If your application operates above -50°C, this substitute is suitable. Both parts share identical standoff voltage (5V), breakdown voltage (6.4V), package format (DO-214AC/SMA), and regulatory compliance.

Q: What is the difference between SMAJ5.0CA-13-F and SMAJ5.0CA-TP?

A: Both parts provide identical electrical performance with 9.2V clamping and 43.5A peak pulse current. The primary differences are packaging format and operating temperature range. SMAJ5.0CA-13-F is supplied in Cut Tape and Digi-Reel format with operating range -55 to 150°C. SMAJ5.0CA-TP is supplied on tape and reel with an extended upper temperature limit of 175°C. Select based on your assembly equipment compatibility and thermal requirements.

Q: Why does SMAJ5.0CA-TR (STMicroelectronics) have different electrical specifications?

A: SMAJ5.0CA-TR maintains the same 5V standoff and 6.4V breakdown voltages as all other substitutes, ensuring circuit compatibility. However, it features a higher clamping voltage of 13.4V and significantly higher peak pulse current of 174A. These enhanced ratings provide superior transient suppression capability for applications experiencing severe surge conditions. The higher clamping voltage may affect circuit behavior in sensitive applications, so verification against your specific circuit requirements is necessary.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed—SMAJ5.0CA (MDD), SMAJ5.0CA-13-F (Diodes Incorporated), SMAJ5.0CA-TP (Micro Commercial Co), and SMAJ5.0CA-TR (STMicroelectronics)—are RoHS3 compliant with REACH Unaffected status. Moisture sensitivity level is 1 (Unlimited) for all variants, matching the original SMAJ5.0CE3/TR13 specification.

Q: Can I substitute SMAJ5.0CE3/TR13 with SMAJ5.0CA-TR if my circuit requires higher surge protection?

A: SMAJ5.0CA-TR is electrically compatible from a standoff and breakdown voltage perspective. However, the higher clamping voltage of 13.4V (compared to 9.6V) will result in higher transient voltages appearing across protected circuits. This may exceed the voltage tolerance of downstream components. Substitution with SMAJ5.0CA-TR requires circuit-level analysis to confirm that all protected components can withstand the higher clamping voltage without damage or performance degradation.

Q: What packaging formats are available for these substitutes?

A: SMAJ5.0CA (MDD) is supplied without specified packaging designation. SMAJ5.0CA-13-F (Diodes Incorporated) is available in Cut Tape and Digi-Reel format. SMAJ5.0CA-TP (Micro Commercial Co) is supplied on tape and reel. SMAJ5.0CA-TR (STMicroelectronics) is available in Cut Tape and Digi-Reel format. All parts use the DO-214AC (SMA) package case. Verify packaging compatibility with your assembly equipment before procurement.

Q: Which substitute offers the best low-temperature performance?

A: SMAJ5.0CA-13-F (Diodes Incorporated), SMAJ5.0CA-TP (Micro Commercial Co), and SMAJ5.0CA-TR (STMicroelectronics) all extend to -55°C, compared to the original -65°C specification. SMAJ5.0CA (MDD) is limited to -50°C. If your application requires operation below -50°C, select from the three alternatives with -55°C minimum ratings. The original SMAJ5.0CE3/TR13 remains the only option for applications requiring -65°C operation.

Q: Are there inventory considerations when selecting a substitute?

A: Inventory levels vary significantly among substitutes. SMAJ5.0CA (MDD) has 35,200 pieces in stock, SMAJ5.0CA-13-F has 20,300 pieces, SMAJ5.0CA-TP has 19,173 pieces, and SMAJ5.0CA-TR has 17,653 pieces. The original SMAJ5.0CE3/TR13 has 694 pieces available. Substitute parts offer substantially higher availability for high-volume procurement requirements.