SMBJ75CE3/TR13 Transient Voltage Suppressor (TVS) Diode Equivalent & Substitute Parts

Part Overview

The SMBJ75CE3/TR13 is an Active status Transient Voltage Suppressor diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount device in DO-214AA (SMB) package provides bidirectional transient suppression. Identifying equivalent and substitute parts becomes necessary when managing inventory, ensuring supply continuity, or accommodating manufacturer availability constraints while maintaining circuit protection requirements.

Substiute Parts

SMBJ75CE3/TR13

Microchip TechnologyIn Stock: 1025SMBJ75CE3/TR13 Datasheet

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SMBJ75CA

MDDIn Stock: 45399SMBJ75CA Datasheet

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SMBJ75CA

MDDIn Stock: 45399SMBJ75CA Datasheet

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SMBJ75CA

MDDIn Stock: 45399SMBJ75CA Datasheet

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SMBJ75CA-13-F

Diodes IncorporatedIn Stock: 29379SMBJ75CA-13-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ75CE3/TR13 are identified based on electrical and mechanical parameter compatibility within acceptable tolerances for transient voltage suppression applications:

Critical Substitution Parameters:

• Voltage - Reverse Standoff: 75V (must match exactly)
• Voltage - Breakdown (Min): 83.3V (must match exactly)
• Bidirectional Channels: 1 (must match)
• Package / Case: DO-214AA, SMB (must match)
• Mounting Type: Surface Mount (must match)
• Applications: General Purpose (must match)

Acceptable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: range 121V to 134V
• Current - Peak Pulse (10/1000µs): range 4.5A to 5.3A
• Power - Peak Pulse: 600W (standardized across parts)
• Operating Temperature Range: -50°C to -65°C minimum; 150°C maximum

All substitute parts must maintain ROHS3 compliance, MSL Level 1, and Active product status.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SMBJ75CE3/TR13 (Microchip Technology), SMBJ75CA (MDD), and SMBJ75CA-13-F (Diodes Incorporated)—are Active status devices with ROHS3 compliance and MSL Level 1 ratings, confirming their suitability for equivalent substitution.

The SMBJ75CA and SMBJ75CA-13-F are direct electrical substitutes for the SMBJ75CE3/TR13 within the specified parameter ranges. Both maintain the critical 75V reverse standoff voltage and 83.3V minimum breakdown voltage required for this protection circuit application.

The clamping voltage differential (SMBJ75CE3/TR13 at 134V nominal versus substitute parts at 121V nominal) reflects manufacturing tolerance variations between suppliers but remains within the functional operating envelope for general-purpose transient suppression. The MDD variant offers higher peak pulse current capability (5.3A versus 4.5A), providing additional margin in high-stress scenarios. The Diodes Incorporated SMBJ75CA-13-F presents a nominal performance profile between these extremes.

Operating temperature range variations (Microchip -65 to 150°C; MDD -50 to 150°C; Diodes -55 to 150°C) should be evaluated against specific application thermal requirements. All three specifications support the standard -55 to 150°C industrial operating range.

Frequently Asked Questions (FAQ)

Q: Can SMBJ75CA (MDD) or SMBJ75CA-13-F (Diodes Incorporated) directly replace SMBJ75CE3/TR13 in existing designs?

A: Yes. Both substitute parts maintain the critical electrical parameters: 75V reverse standoff voltage, 83.3V minimum breakdown voltage, identical DO-214AA SMB package, and surface-mount configuration. Both are Active status, ROHS3 compliant devices suitable for direct substitution in general-purpose transient voltage suppression circuits.

Q: What is the significance of the clamping voltage difference (134V vs. 121V)?

A: Clamping voltage represents the voltage at the device terminals during peak transient current injection (Ipp). The SMBJ75CE3/TR13 exhibits a higher clamping voltage (134V maximum), providing tighter voltage control at high currents. Substitute parts clamp at 121V nominal, which is within acceptable variation for general-purpose protection but may affect transient energy dissipation characteristics. Selection depends on specific circuit protection thresholds.

Q: Are there any thermal performance differences between these parts?

A: The Microchip SMBJ75CE3/TR13 offers the widest operating temperature range (-65 to 150°C), suitable for extreme cold-weather applications. MDD and Diodes Incorporated variants are specified for -50 to -55°C minimum, covering standard industrial requirements. Peak pulse power rating (600W) is identical across all three, indicating equivalent thermal dissipation capability under transient conditions.

Q: How does the higher peak pulse current in the MDD variant (5.3A vs. 4.5A) affect circuit compatibility?

A: Higher peak pulse current capability indicates greater transient energy handling capacity. The MDD SMBJ75CA at 5.3A Ipp provides additional design margin compared to the 4.5A specification of the Microchip device. This difference does not affect pin-for-pin compatibility or circuit functionality; it represents enhanced performance headroom during transient events.

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

A: Yes. All three parts are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes. The DO-214AA SMB package format is standardized across all variants, ensuring mechanical compatibility with existing PCB layouts and pick-and-place equipment configurations.

Q: What certifications should I verify when substituting these parts?

A: All three parts carry ROHS3 compliance and REACH unaffected status. Moisture Sensitivity Level is rated as MSL 1 (Unlimited) across all variants, indicating no specific moisture exposure restrictions during storage or handling. Verify manufacturer datasheets for ECCN classification (EAR99 applies to all listed parts) if compliance documentation is required for procurement or export purposes.