SMBJ45CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ45CE3/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 operates with a 45V reverse standoff voltage and provides clamping at 80.3V maximum, with a peak pulse current rating of 7.5A. The device is supplied in Tape & Reel packaging and maintains Active product status with full RoHS3 compliance. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and operational parameters within the TVS diode category.

Substiute Parts

SMBJ45CE3/TR13

Microchip TechnologyIn Stock: 1221SMBJ45CE3/TR13 Datasheet

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SMBJ45CA

MDDIn Stock: 17275SMBJ45CA Datasheet

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SMBJ45CA

MDDIn Stock: 17275SMBJ45CA Datasheet

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SMBJ45CA-13-F

Diodes IncorporatedIn Stock: 66074SMBJ45CA-13-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ45CE3/TR13 are qualified based on the following critical parameters that determine functional equivalence:

Matching Criteria:

• Voltage - Reverse Standoff (Typ): 45V
• Voltage - Breakdown (Min): 50V
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Bidirectional Channels: 1
• Power - Peak Pulse: 600W
• RoHS3 Compliance
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

Allowable Variations:

• Voltage - Clamping (Max) @ Ipp: Substitute parts may exhibit clamping voltages lower than the main part (72.7V vs. 80.3V), provided the value remains within acceptable circuit protection parameters
• Current - Peak Pulse (10/1000µs): Substitute parts may have higher peak pulse current ratings (8.3A vs. 7.5A)
• Operating Temperature Range: Substitute parts may have narrower temperature ranges (-50°C to -55°C minimum vs. -65°C minimum)

Parameter Comparison

Engineering Selection Recommendations

SMBJ45CA (MDD): This substitute part maintains all critical electrical parameters including 45V reverse standoff voltage, 50V minimum breakdown voltage, and 600W peak pulse power rating. The clamping voltage of 72.7V is lower than the main part, and peak pulse current is rated at 8.3A. Operating temperature range is -50°C to 150°C. The part is RoHS3 compliant with MSL 1 rating and REACH unaffected status. Active product status confirms ongoing availability.

SMBJ45CA-13-F (Diodes Incorporated): This substitute part is supplied in Tape & Reel packaging, matching the main part's delivery format. Electrical specifications include 45V reverse standoff voltage, 50V minimum breakdown voltage, and 600W peak pulse power. Clamping voltage is 72.7V with 8.3A peak pulse current. Operating temperature range is -55°C to 150°C, providing broader low-temperature coverage than the MDD alternative. Full RoHS3 compliance, MSL 1 rating, and REACH unaffected status are maintained. Active product status and high inventory availability (66,041 pcs) support supply chain continuity.

Both substitute parts are functionally equivalent for general-purpose transient voltage suppression applications where the specified electrical parameters are acceptable. Selection between alternatives depends on packaging requirements, temperature range needs, and supply availability.

Frequently Asked Questions (FAQ)

Q: Can SMBJ45CA or SMBJ45CA-13-F be used as direct replacements for SMBJ45CE3/TR13?

A: Yes, both parts are functionally equivalent substitutes. All three devices share identical reverse standoff voltage (45V), breakdown voltage (50V), and peak pulse power rating (600W). Both substitute parts are surface-mount TVS diodes in DO-214AA/SMB packages with single bidirectional channels. The primary differences are lower clamping voltages (72.7V vs. 80.3V) and higher peak pulse current ratings (8.3A vs. 7.5A) in the substitute parts.

Q: What is the significance of the clamping voltage difference between the main part and substitutes?

A: The main part SMBJ45CE3/TR13 clamps at 80.3V maximum, while both substitutes clamp at 72.7V maximum. Lower clamping voltage provides tighter voltage regulation during transient events. Selection depends on circuit protection requirements and the maximum allowable voltage at the protected node.

Q: Are there packaging differences between these parts?

A: The SMBJ45CE3/TR13 and SMBJ45CA-13-F are both supplied in Tape & Reel format. The SMBJ45CA from MDD does not specify packaging format in the provided data. All three parts use identical DO-214AA/SMB surface-mount packages suitable for automated assembly.

Q: What are the operating temperature range differences?

A: The main part operates from -65°C to 150°C. The MDD substitute operates from -50°C to 150°C, and the Diodes Incorporated substitute operates from -55°C to 150°C. Applications requiring operation below -50°C should use the main part or the Diodes Incorporated substitute.

Q: Do all parts meet the same compliance standards?

A: Yes. All three parts are RoHS3 compliant, have MSL 1 (Unlimited) moisture sensitivity rating, and REACH unaffected status. ECCN and HTSUS classifications are identical across all parts.

Q: What inventory considerations apply to these substitutes?

A: The main part has 1,112 pcs in stock. The MDD SMBJ45CA has 17,200 pcs available. The Diodes Incorporated SMBJ45CA-13-F has 66,041 pcs in stock, providing the highest supply availability.