SMBJ15CE3/TR13

Part Overview

The SMBJ15CE3/TR13 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This surface-mount component provides transient protection in general-purpose applications with a 15V reverse standoff voltage and 26.9V maximum clamping voltage. The part is in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative models are necessary to accommodate different inventory availability, packaging preferences, and slight variations in clamping voltage and peak pulse current specifications across manufacturers.

Substiute Parts

SMBJ15CE3/TR13

Microchip TechnologyIn Stock: 968SMBJ15CE3/TR13 Datasheet

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SMBJ15CA

EVVO SemiIn Stock: 187310SMBJ15CA Datasheet

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SMBJ15CA

EVVO SemiIn Stock: 187310SMBJ15CA Datasheet

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SMBJ15CA

EVVO SemiIn Stock: 187310SMBJ15CA Datasheet

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SMBJ15CA-13-F

Diodes IncorporatedIn Stock: 29173SMBJ15CA-13-F Datasheet

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SMBJ15CA-TR

STMicroelectronicsIn Stock: 22539SMBJ15CA-TR Datasheet

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SZ1SMB15CAT3G

Littelfuse Inc.In Stock: 14103SZ1SMB15CAT3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the SMBJ15CE3/TR13 is based on maintaining functional equivalence in critical electrical parameters while allowing acceptable tolerances in manufacturing-specific variations. The following parameters establish substitutability:

Critical Parameters for Substitution:

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Breakdown (Min): 16.7V
• Bidirectional Channels: 1
• Type: Zener
• Mounting Type: Surface Mount
• Package / Case: DO-214AA, SMB
• Power - Peak Pulse: 600W
• Operating Temperature: -65°C to 150°C minimum

Acceptable Parameter Variation:

• Voltage - Clamping (Max) @ Ipp: 24.4V to 26.9V (industry standard tolerance)
• Current - Peak Pulse (10/1000µs): 22.3A to 25.1A (manufacturer process variation)

All substitute parts maintain identical standoff and breakdown voltages, surface-mount packaging, and thermal operating range. Variations in clamping voltage and peak pulse current remain within the allowable specifications for general-purpose TVS applications. All substitutes are active production items with ROHS3 compliance and MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and ROHS3 compliance, making them suitable for new designs. The SMBJ15CE3/TR13 (Microchip) offers the highest clamping voltage specification at 26.9V, providing additional margin in transient suppression. The SMBJ15CA-TR (STMicroelectronics) and SZ1SMB15CAT3G (Littelfuse) offer the highest peak pulse current specifications at 25.1A and 24A respectively, with STMicroelectronics also providing broader operating temperature range documentation. The SMBJ15CA variants from EVVO Semi and Diodes Incorporated deliver lowest-cost options with substantial inventory availability.

For applications requiring the widest operating temperature range (-65°C to 150°C), the Microchip SMBJ15CE3/TR13, EVVO Semi SMBJ15CA, and Littelfuse SZ1SMB15CAT3G are suitable. For applications where minimum operating temperature constraint is -55°C, Diodes Incorporated SMBJ15CA-13-F and STMicroelectronics SMBJ15CA-TR are acceptable alternatives.

Frequently Asked Questions (FAQ)

Q: Can I substitute SMBJ15CA (EVVO Semi) for SMBJ15CE3/TR13 (Microchip)? A: Yes. Both parts share identical reverse standoff voltage (15V), breakdown voltage (16.7V), power rating (600W), and operating temperature range (-65°C to 150°C). The SMBJ15CA exhibits lower clamping voltage (24.4V vs. 26.9V) and higher peak pulse current (24.6A vs. 22.3A), which remain within general-purpose TVS application tolerances. Both maintain ROHS3 compliance and MSL 1 rating.

Q: Why does the SZ1SMB15CAT3G from Littelfuse have different part naming? A: The SZ1SMB15CAT3G is Littelfuse's equivalent part number for the 15V bidirectional TVS diode in SMB packaging. Littelfuse uses its own nomenclature system while maintaining electrical equivalence to industry-standard SMBJ15 parts. All electrical parameters remain compatible with SMBJ15 variants.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging? A: Tape & Reel (TR) provides continuous reel packaging for automated assembly lines. Cut Tape (CT) & Digi-Reel® offers smaller quantity packaging options. Both packaging types contain identical components; selection depends on production volume and assembly equipment compatibility. The SMBJ15CE3/TR13 uses Tape & Reel, while SMBJ15CA (EVVO Semi) and SMBJ15CA-TR (STMicroelectronics) offer Cut Tape options.

Q: Are all substitute parts suitable for automotive applications? A: Only the SZ1SMB15CAT3G from Littelfuse carries automotive grade qualification and AEC-Q101 certification. The remaining substitute parts are rated for general-purpose applications. Automotive application requirements must be evaluated against individual part certifications.

Q: What is the significance of the clamping voltage variation between 24.4V and 26.9V? A: Clamping voltage variation reflects manufacturing tolerances across different suppliers. At the specified peak pulse current (Ipp), the SMBJ15CE3/TR13 clamps at 26.9V while substitute variants clamp at 24.4V. Both remain appropriate for protecting circuits designed for 15V nominal operation, as the clamping voltage is well above the minimum breakdown threshold (16.7V). Selection should verify circuit protection requirements against the specific clamping voltage needed.