SMAJ90CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMAJ90CE3/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 90V reverse standoff voltage and provides 160V maximum clamping voltage at peak pulse current. The component is supplied in DO-214AC (SMA) packaging on tape and reel, with active product status and full RoHS3 compliance.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative suppliers offer improved lead times or inventory levels, or when design requirements permit operation within the electrical parameter ranges of equivalent devices from other manufacturers.

Substiute Parts

SMAJ90CE3/TR13

Microchip TechnologyIn Stock: 789SMAJ90CE3/TR13 Datasheet

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SMAJ90CA

MDDIn Stock: 37281SMAJ90CA Datasheet

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SMAJ90CA

MDDIn Stock: 37281SMAJ90CA Datasheet

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SMAJ90CA

MDDIn Stock: 37281SMAJ90CA Datasheet

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SMAJ90CA-13-F

Diodes IncorporatedIn Stock: 147467SMAJ90CA-13-F Datasheet

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SMAJ90CA-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 36164SMAJ90CA-E3/61 Datasheet

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SMAJ90CA-TP

Micro Commercial CoIn Stock: 5746SMAJ90CA-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ90CE3/TR13 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 90V
• Voltage - Breakdown (Min): 100V
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Type: Zener
• Bidirectional Channels: 1

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: 146V to 160V (lower clamping voltages provide equivalent or improved protection)
• Current - Peak Pulse (10/1000µs): 2.1A to 3.1A (lower peak pulse currents are acceptable for general-purpose applications)
• Power - Peak Pulse: 300W to 500W (lower power ratings are acceptable for general-purpose applications)
• Operating Temperature Range: -55°C to 175°C (encompasses or exceeds the primary part range)

All substitute parts maintain identical reverse standoff and breakdown voltage specifications, ensuring functional equivalence in circuit protection applications. Variations in clamping voltage, peak pulse current, and power dissipation reflect different manufacturer designs while remaining within acceptable operating parameters for the 90V protection class.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance, ensuring regulatory alignment with the primary SMAJ90CE3/TR13 component. The following considerations apply to substitute selection:

SMAJ90CA (MDD): This substitute provides equivalent electrical performance with 146V clamping voltage and 2.7A peak pulse current. The operating temperature range of -50 to 150°C is narrower than the primary part at the lower bound. This part is suitable for applications where the lower temperature limit of -50°C is acceptable. Inventory availability is substantial at 37,200 pieces.

SMAJ90CA-13-F (Diodes Incorporated): This automotive-grade substitute offers 146V clamping voltage and 2.7A peak pulse current with an operating temperature range of -55 to 150°C. The automotive qualification provides additional process and reliability assurance. This part is suitable for applications requiring automotive-grade components. Inventory availability is high at 147,400 pieces.

SMAJ90CA-E3/61 (Vishay General Semiconductor - Diodes Division): This substitute, marketed under the TransZorb® series designation, provides 146V clamping voltage with a reduced peak pulse current of 2.1A and 300W power dissipation. The operating temperature range of -55 to 150°C is equivalent to the primary part at the lower bound. This part is suitable for applications with lower transient current requirements. Inventory availability is 36,100 pieces.

SMAJ90CA-TP (Micro Commercial Co): This substitute provides 146V clamping voltage and 2.7A peak pulse current with an extended operating temperature range of -55 to 175°C. The upper temperature limit of 175°C exceeds the primary part specification. This part is suitable for applications requiring extended high-temperature operation. Inventory availability is 5,638 pieces.

All substitute parts are supplied in DO-214AC (SMA) surface-mount packaging with tape and reel delivery, maintaining mechanical and assembly compatibility with the primary component.

Frequently Asked Questions (FAQ)

Q: Can SMAJ90CA (MDD) be used as a direct replacement for SMAJ90CE3/TR13?

A: Yes, SMAJ90CA provides equivalent electrical performance with matching 90V reverse standoff and 100V breakdown voltages. The 146V clamping voltage is lower than the primary part's 160V specification, which provides equivalent or improved transient suppression. The primary consideration is the operating temperature range, which extends only to -50°C at the lower bound compared to -65°C for the primary part. This substitute is suitable for applications operating within -50 to 150°C.

Q: What is the difference between SMAJ90CA-13-F and other substitutes?

A: SMAJ90CA-13-F is designated as automotive-grade, indicating compliance with automotive qualification standards and enhanced process controls. This part is functionally equivalent to other SMAJ90CA variants but carries additional reliability assurance suitable for automotive applications. The operating temperature range of -55 to 150°C is broader at the lower bound than the MDD variant.

Q: Why does SMAJ90CA-E3/61 have lower peak pulse current (2.1A) than the primary part (3.1A)?

A: SMAJ90CA-E3/61 represents a different manufacturer design within the 90V protection class. The lower peak pulse current of 2.1A and 300W power dissipation are acceptable for general-purpose transient suppression applications. This part is suitable when circuit transient currents do not exceed 2.1A. Applications requiring higher peak pulse current handling should use parts with 2.7A or 3.1A ratings.

Q: Are all substitute parts available in tape and reel packaging?

A: Yes, all listed substitute parts are supplied in tape and reel (TR) packaging, maintaining compatibility with automated assembly processes. The DO-214AC (SMA) package format is identical across all parts.

Q: What is the significance of the operating temperature range differences?

A: Operating temperature range defines the thermal environment in which the component functions within specification. SMAJ90CA-TP offers the widest range at -55 to 175°C, suitable for high-temperature applications. SMAJ90CA (MDD) has the narrowest range at -50 to 150°C. Selection depends on the specific thermal requirements of the application. All parts maintain the upper limit of 150°C or higher, which covers standard industrial and consumer applications.

Q: Can SMAJ90CA-TP be used in applications requiring extended high-temperature operation?

A: Yes, SMAJ90CA-TP is specified for operation up to 175°C, exceeding the primary part's 150°C limit. This part is suitable for applications with elevated ambient or junction temperatures. The 146V clamping voltage and 2.7A peak pulse current provide equivalent transient suppression performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts carry RoHS3 compliance certification, ensuring regulatory alignment with the primary SMAJ90CE3/TR13 component. All parts also maintain MSL 1 (Unlimited) moisture sensitivity level.