SMBJ7.5CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ7.5CE3/TR13 is a Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for surface mount applications in the DO-214AA (SMB) package. This bidirectional Zener-type TVS diode provides general-purpose transient voltage protection with a 7.5V reverse standoff voltage and 14.3V maximum clamping voltage at peak pulse current. The part is actively manufactured and ROHS3 compliant. Alternative equivalent parts are available from multiple manufacturers to support supply chain flexibility and procurement optimization.

Substiute Parts

SMBJ7.5CE3/TR13

Microchip TechnologyIn Stock: 859SMBJ7.5CE3/TR13 Datasheet

Current PartRFQ

SMBJ7.5CA

MDDIn Stock: 45848SMBJ7.5CA Datasheet

SimilarRFQ

SMBJ7.5CA

MDDIn Stock: 45848SMBJ7.5CA Datasheet

SimilarRFQ

SMBJ7.5CA-13-F

Diodes IncorporatedIn Stock: 4196SMBJ7.5CA-13-F Datasheet

SimilarRFQ

SMBJ7.5CA-TP

Micro Commercial CoIn Stock: 3082SMBJ7.5CA-TP Datasheet

SimilarRFQ

SMBJ7V5CA

Taiwan Semiconductor CorporationIn Stock: 16116SMBJ7V5CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diode SMBJ7.5CE3/TR13 is based on strict electrical and mechanical parameter alignment:

Critical Substitution Parameters:

• Voltage - Reverse Standoff (Typ): 7.5V (must match)
• Voltage - Breakdown (Min): 8.33V (must match)
• Package / Case: DO-214AA, SMB (must match for PCB compatibility)
• Mounting Type: Surface Mount (must match)
• Bidirectional Channels: 1 (must match)

Acceptable Variation Range:

• Voltage - Clamping (Max) @ Ipp: 12.9V to 14.3V (substitute parts operate within this range)
• Current - Peak Pulse (10/1000µs): 42A to 46.6A (substitute parts provide equal or greater pulse current handling)
• Operating Temperature Range: Minimum -55°C to -65°C; Maximum 150°C to 175°C (substitute parts meet or exceed the original range)

All listed substitute parts meet these criteria and are ROHS3 compliant with MSL Level 1 rating.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are actively manufactured and ROHS3 compliant with unlimited moisture sensitivity rating (MSL Level 1). Selection among these equivalents should be based on:

1. Clamping Voltage: The original SMBJ7.5CE3/TR13 operates with a 14.3V maximum clamping voltage, while substitute parts (SMBJ7.5CA series) operate at 12.9V. This lower clamping voltage in substitute parts provides superior transient suppression performance and is functionally compatible with the original design.

2. Peak Pulse Current: Substitute parts deliver 46.5A to 46.6A peak pulse current, exceeding the original part's 42A rating. This provides enhanced surge handling capability.

3. Operating Temperature Range: The SMBJ7.5CA-TP (Micro Commercial Co) extends the upper operating temperature to 175°C, compared to 150°C for other parts. The SMBJ7.5CE3/TR13 supports a lower minimum temperature of -65°C versus -50°C to -55°C for substitutes.

4. Packaging and Compliance: All parts share identical DO-214AA (SMB) packaging and are ROHS3 compliant with REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can SMBJ7.5CA parts directly replace SMBJ7.5CE3/TR13 in existing designs? All substitute parts are pin-compatible and functionally equivalent. The lower clamping voltage (12.9V vs. 14.3V) and equal or greater peak pulse current ratings ensure compatibility without circuit redesign.

Q: What is the significance of the different clamping voltages? The SMBJ7.5CA series exhibits a clamping voltage of 12.9V, which is lower than the SMBJ7.5CE3/TR13 at 14.3V. In TVS diode operation, lower clamping voltage provides superior transient suppression, making these substitute parts functionally superior for protection applications.

Q: Are all substitute parts suitable for high-temperature applications? The SMBJ7.5CA-TP supports operating temperatures up to 175°C (TJ), making it appropriate for high-temperature environments. Other substitute parts operate to 150°C maximum junction temperature, matching the original part specification.

Q: Does the original SMBJ7.5CE3/TR13 have superior low-temperature performance compared to substitutes? The SMBJ7.5CE3/TR13 specifies -65°C minimum junction temperature, while most substitutes operate to -55°C. For applications requiring extended low-temperature operation below -55°C, the original part provides broader environmental coverage.

Q: How do manufacturer part number variations affect selection? Variations such as -13-F, -TP, and -CA designations indicate different manufacturers and packaging formats (Tape & Reel vs. Cut Tape configurations). Electrical specifications remain consistent; selection should be based on procurement availability, packaging requirements, and supplier lead times.

Q: Are all listed parts ROHS3 compliant? All substitute parts listed meet ROHS3 compliance requirements with MSL Level 1 rating, matching the original SMBJ7.5CE3/TR13 specification.