SMBJ7.5A-13 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMBJ7.5A-13 is a unidirectional Zener-type transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 7.5V reverse standoff voltage and provides 12.9V maximum clamping voltage at peak pulse current, with a peak pulse power rating of 600W. The SMBJ7.5A-13 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for circuit protection applications.

Substiute Parts

SMBJ7.5A-13

Diodes IncorporatedIn Stock: 4350SMBJ7.5A-13 Datasheet

Current PartRFQ

SMBJ7.5A-13-F

Diodes IncorporatedIn Stock: 24157SMBJ7.5A-13-F Datasheet

DirectRFQ

SMBJ7.5A

MDDIn Stock: 22756SMBJ7.5A Datasheet

DirectRFQ

SMBJ7.5A

MDDIn Stock: 22756SMBJ7.5A Datasheet

DirectRFQ

SMBJ7.5A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1938SMBJ7.5A-E3/52 Datasheet

DirectRFQ

PTVS7V0P1UP,115

Nexperia USA Inc.In Stock: 3750PTVS7V0P1UP,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ7.5A-13 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Voltage - Reverse Standoff (Typ): 7.5V (±tolerance acceptable within standard specifications)
• Voltage - Clamping (Max) @ Ipp: 12.9V (maximum allowable clamp voltage)
• Current - Peak Pulse (10/1000µs): minimum 46.5A
• Power - Peak Pulse: 600W minimum
• Operating Temperature Range: -55°C to 150°C minimum

Mechanical Compatibility Requirements:

• Package / Case: DO-214AA or SMB equivalent
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant preferred for new designs
• REACH Status: REACH Unaffected

Substitute parts must satisfy all electrical parameters within the specified ranges and maintain identical or superior mechanical packaging compatibility. Parts are grouped by manufacturer and packaging configuration while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - SMBJ7.5A-13-F (Diodes Incorporated): This part is the direct equivalent of the SMBJ7.5A-13, manufactured by the same supplier with identical electrical specifications and DO-214AA/SMB packaging. The -F suffix indicates Tape & Reel packaging. This part is ROHS3 compliant and carries Active product status, making it the preferred direct replacement for new procurement and design continuity.

Secondary Substitute - SMBJ7.5A-E3/52 (Vishay General Semiconductor): This TransZorb® series part maintains identical electrical parameters and DO-214AA/SMB packaging compatibility. It is ROHS3 compliant with Active product status and operates across the full -55°C to 150°C temperature range. This option provides cross-manufacturer compatibility while preserving all critical electrical and mechanical specifications.

Secondary Substitute - SMBJ7.5A (MDD): This part meets all electrical requirements with 46.6A peak pulse current (marginally higher than the 46.5A specification) and maintains DO-214AA/SMB packaging. Operating temperature range is -50°C to 150°C, which is acceptable for most applications but represents a 5°C reduction at the lower temperature limit. ROHS3 compliant with Active product status.

Alternative Substitute - PTVS7V0P1UP,115 (Nexperia USA Inc.): This part operates at 7V reverse standoff voltage (0.5V lower than the SMBJ7.5A-13) with 12V maximum clamping voltage and 50A peak pulse current. The package is SOD-128, which differs from the DO-214AA/SMB form factor and requires PCB layout modification. This part is AEC-Q101 automotive qualified and ROHS3 compliant. Selection of this part requires verification that the lower standoff voltage and different package footprint are compatible with the target application.

Frequently Asked Questions (FAQ)

Q: Can SMBJ7.5A-13-F be used as a direct drop-in replacement for SMBJ7.5A-13?

A: Yes. SMBJ7.5A-13-F is manufactured by Diodes Incorporated with identical electrical specifications (7.5V standoff, 12.9V clamping, 46.5A peak pulse) and DO-214AA/SMB packaging. The only difference is the packaging format (Tape & Reel vs. bulk), which does not affect electrical performance or PCB compatibility.

Q: What is the difference between the SMBJ7.5A-13 and SMBJ7.5A-E3/52?

A: Both parts share identical electrical specifications and DO-214AA/SMB packaging. The primary differences are manufacturer (Diodes Incorporated vs. Vishay) and product series designation (SMBJ vs. TransZorb®). Both are ROHS3 compliant and suitable for equivalent circuit protection applications.

Q: Why does the MDD SMBJ7.5A show -50°C minimum operating temperature instead of -55°C?

A: The MDD variant specifies a -50°C to 150°C operating range, which is 5°C higher at the lower limit compared to the SMBJ7.5A-13 specification of -55°C to 150°C. For applications requiring operation below -50°C, the Diodes Incorporated or Vishay alternatives are recommended.

Q: Is the Nexperia PTVS7V0P1UP,115 a suitable substitute?

A: The Nexperia part is electrically similar but operates at 7V reverse standoff voltage (0.5V lower) and uses SOD-128 packaging instead of DO-214AA/SMB. PCB layout modification is required for package compatibility. This part is suitable only if the lower standoff voltage and different footprint are acceptable for the target application.

Q: What does RoHS3 compliance mean for these parts?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials. All active substitute parts listed are ROHS3 compliant, making them suitable for modern design standards and regulatory requirements.

Q: Can these parts be used interchangeably in existing designs?

A: SMBJ7.5A-13-F, SMBJ7.5A-E3/52, and MDD SMBJ7.5A can be used interchangeably in existing designs without PCB modification, as they share identical or superior electrical specifications and DO-214AA/SMB packaging. The Nexperia PTVS7V0P1UP,115 requires PCB layout changes due to different packaging and should be evaluated for voltage specification compatibility.