SMBJ28CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ28CE3/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 28V reverse standoff voltage with a 50V maximum clamping voltage and 12A peak pulse current capability in a DO-214AA (SMB) package. The part is active in production status and RoHS3 compliant with unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications. Substitutes maintain the same reverse standoff voltage (28V), breakdown voltage (31.1V minimum), and surface-mount package format while offering comparable or enhanced performance characteristics.

Substiute Parts

SMBJ28CE3/TR13

Microchip TechnologyIn Stock: 779SMBJ28CE3/TR13 Datasheet

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SMBJ28CA

MDDIn Stock: 26413SMBJ28CA Datasheet

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SMBJ28CA

MDDIn Stock: 26413SMBJ28CA Datasheet

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SMBJ28CA-13-F

Diodes IncorporatedIn Stock: 20264SMBJ28CA-13-F Datasheet

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SMBJ28CA-TP

Micro Commercial CoIn Stock: 2071SMBJ28CA-TP Datasheet

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SZ1SMB28CAT3G

Littelfuse Inc.In Stock: 55288SZ1SMB28CAT3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ28CE3/TR13 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 28V
• Voltage - Breakdown (Min): 31.1V
• Bidirectional Channels: 1
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Performance Tolerance Parameters:

• Voltage - Clamping (Max) @ Ipp: 45.4V to 50V
• Current - Peak Pulse (10/1000µs): 12A to 13.3A
• Power - Peak Pulse: 600W (constant across all parts)
• Operating Temperature Range: -65°C to -50°C minimum; 150°C to 175°C maximum

All identified substitutes maintain identical reverse standoff and breakdown voltage specifications, ensuring functional equivalence in overvoltage protection circuits. Variations in clamping voltage and peak pulse current represent performance enhancements or minor deviations within acceptable design margins for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active production status and full RoHS3 compliance, ensuring regulatory alignment with the original SMBJ28CE3/TR13 component. Selection among substitutes is determined by specific application requirements and environmental constraints.

SMBJ28CA (MDD): Offers enhanced peak pulse current (13.3A) with reduced clamping voltage (45.4V). Suitable for applications requiring improved current handling. Operating temperature minimum of -50°C is acceptable for non-extreme cold environments. High inventory availability (26,400 units) supports production volume requirements.

SMBJ28CA-13-F (Diodes Incorporated): Provides 13.2A peak pulse current with 45.4V clamping voltage. Operating temperature range of -55°C to 150°C extends cold-temperature performance compared to MDD variant. Tape & Reel packaging and established Diodes Incorporated supply chain support manufacturing integration. Inventory of 20,200 units supports medium to high-volume applications.

SMBJ28CA-TP (Micro Commercial Co): Delivers 13.2A peak pulse current with 45.4V clamping voltage and extended maximum operating temperature of 175°C. This thermal capability accommodates high-temperature circuit environments. Tape & Reel packaging ensures automated assembly compatibility. Inventory of 2,059 units supports lower-volume or specialized applications.

SZ1SMB28CAT3G (Littelfuse Inc.): Maintains -65°C to 150°C operating temperature range matching the original part. Includes AEC-Q101 automotive qualification and specified capacitance of 310pF @ 1MHz, supporting automotive and high-reliability applications. Highest inventory availability (55,200 units) ensures supply continuity. Automotive-grade certification qualifies this part for regulated automotive environments.

Frequently Asked Questions (FAQ)

Q: Can SMBJ28CA (MDD) directly replace SMBJ28CE3/TR13 in all applications?

A: SMBJ28CA maintains identical reverse standoff (28V) and breakdown (31.1V) voltages, ensuring functional equivalence for overvoltage protection. The reduced clamping voltage (45.4V vs. 50V) and increased peak pulse current (13.3A vs. 12A) represent performance improvements. The -50°C minimum operating temperature is acceptable for standard industrial and commercial applications but may not support extreme cold environments requiring -65°C operation.

Q: What is the significance of the clamping voltage difference between SMBJ28CE3/TR13 (50V) and substitute parts (45.4V)?

A: Clamping voltage defines the maximum voltage the TVS diode allows across its terminals during transient suppression. The 45.4V clamping voltage in substitute parts is lower than the original 50V specification, providing tighter voltage regulation and potentially better protection for sensitive downstream components. This represents an enhancement rather than a limitation for general-purpose applications.

Q: Are all substitute parts available in Tape & Reel packaging?

A: SMBJ28CA (MDD) does not specify packaging type in available documentation. SMBJ28CA-13-F, SMBJ28CA-TP, and SZ1SMB28CAT3G are all supplied in Tape & Reel (TR) format, compatible with automated surface-mount assembly processes. Tape & Reel packaging is standard for high-volume manufacturing.

Q: Which substitute part is suitable for automotive applications?

A: SZ1SMB28CAT3G (Littelfuse Inc.) carries AEC-Q101 automotive qualification, meeting automotive industry reliability and performance standards. This part is the appropriate selection for regulated automotive circuit protection applications.

Q: Does operating temperature range affect substitution decisions?

A: Operating temperature range affects substitution only when application environments exceed standard industrial limits. SMBJ28CE3/TR13 and SZ1SMB28CAT3G both support -65°C minimum operation for extreme cold environments. SMBJ28CA-TP extends maximum operation to 175°C, supporting high-temperature applications. SMBJ28CA (MDD) with -50°C minimum is suitable for standard commercial and industrial temperature ranges.

Q: Are all substitute parts RoHS3 compliant?

A: All identified substitute parts maintain RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1), matching the regulatory and environmental specifications of the original SMBJ28CE3/TR13 component.

Q: What is the inventory impact of selecting different substitute parts?

A: SZ1SMB28CAT3G (Littelfuse) offers the highest inventory availability at 55,200 units, supporting large-scale production. SMBJ28CA (MDD) provides 26,400 units for medium-volume applications. SMBJ28CA-13-F (Diodes Inc.) supplies 20,200 units. SMBJ28CA-TP (Micro Commercial) offers 2,059 units, suitable for lower-volume or specialized requirements.

Q: Can SMBJ28CA-TP be used in applications requiring extended high-temperature operation?

A: SMBJ28CA-TP supports operating temperatures up to 175°C, exceeding the original part's 150°C maximum. This extended thermal capability qualifies it for high-temperature circuit environments where standard TVS diodes would exceed rated operating limits.