SMBJ75AE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ75AE3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates in the 75V reverse standoff voltage class with a maximum clamping voltage of 121V and peak pulse current rating of 4.9A. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring TVS diode protection in the 75V voltage class.

Substiute Parts

SMBJ75AE3/TR13

Microchip TechnologyIn Stock: 1111SMBJ75AE3/TR13 Datasheet

Current PartRFQ

SMBJ75A-13-F

Diodes IncorporatedIn Stock: 29529SMBJ75A-13-F Datasheet

DirectRFQ

SMBJ75A

MeritekIn Stock: 4432SMBJ75A Datasheet

SimilarRFQ

SMBJ75A

MeritekIn Stock: 4432SMBJ75A Datasheet

SimilarRFQ

SMBJ75A

MeritekIn Stock: 4432SMBJ75A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes in the SMBJ75 series is determined by electrical parameter equivalence and mechanical compatibility. The critical parameters governing substitution are:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 75V
• Voltage - Breakdown (Min): 83.3V
• Voltage - Clamping (Max) @ Ipp: 121V
• Current - Peak Pulse (10/1000µs): 4.9A nominal
• Power - Peak Pulse: 600W

Mechanical Parameters:

• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Compliance Parameters:

• Type: Zener
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are classified as direct equivalents when all electrical parameters match the main part specification and mechanical compatibility is confirmed. Operating temperature range variations within the specified limits do not preclude substitution when all other parameters align.

Parameter Comparison

Engineering Selection Recommendations

SMBJ75A-13-F (Diodes Incorporated) is a direct electrical equivalent to the SMBJ75AE3/TR13. All critical electrical parameters match the main part specification. The operating temperature range is -55°C to 150°C, which is narrower than the main part's -65°C to 150°C range. This part is suitable for applications where the lower temperature limit of -55°C is acceptable. Both parts carry ROHS3 compliance and MSL 1 rating. This substitute is recommended for standard general-purpose TVS applications within the specified temperature envelope.

SMBJ75A (Meritek) provides electrical equivalence with a peak pulse current rating of 4.96A, which is within acceptable tolerance of the 4.9A specification. The clamping voltage, reverse standoff voltage, and power dissipation ratings are identical to the main part. The operating temperature range is -55°C to 150°C. This part maintains ROHS3 compliance and MSL 1 rating. Selection of this substitute is appropriate for applications where the Meritek manufacturer source is preferred or required and the -55°C lower temperature limit is acceptable.

All substitute parts maintain the same DO-214AA (SMB) package configuration, surface-mount mounting type, and single unidirectional channel architecture as the main part. Component selection among these equivalents should be based on supplier availability, procurement lead times, and specific application temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ75A-13-F be used as a direct replacement for SMBJ75AE3/TR13?

A: Yes. The SMBJ75A-13-F meets all critical electrical specifications: 75V reverse standoff voltage, 83.3V minimum breakdown voltage, 121V maximum clamping voltage, and 4.9A peak pulse current. Both parts use the DO-214AA (SMB) surface-mount package. The operating temperature range difference (-55°C to 150°C versus -65°C to 150°C) does not affect substitution in applications operating above -55°C.

Q: What is the difference between SMBJ75A-13-F and SMBJ75A from Meritek?

A: Both parts are electrically equivalent with identical voltage ratings and 600W peak pulse power. The Meritek SMBJ75A has a peak pulse current rating of 4.96A compared to 4.9A for the Diodes Incorporated part, representing a negligible difference within manufacturing tolerance. Both use the DO-214AA (SMB) package and operate across -55°C to 150°C. The primary difference is manufacturer source.

Q: Are there any package compatibility issues when substituting these parts?

A: No. All listed substitute parts use the DO-214AA (SMB) surface-mount package with identical pinout and footprint. They are mechanically and electrically interchangeable on the same PCB layout without modification.

Q: Does the operating temperature range difference affect part selection?

A: The SMBJ75AE3/TR13 operates from -65°C to 150°C, while both substitute parts operate from -55°C to 150°C. If your application requires operation below -55°C, the main part is required. For applications operating within -55°C to 150°C, either substitute part is acceptable.

Q: Are all listed parts RoHS3 compliant?

A: Yes. The main part SMBJ75AE3/TR13 and all substitute parts (SMBJ75A-13-F and SMBJ75A) are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity level.

Q: What is the significance of the peak pulse current rating difference between 4.9A and 4.96A?

A: The 4.96A rating from Meritek represents a 1.2% variance from the 4.9A specification and falls within normal manufacturing tolerance for TVS diodes in this class. Both ratings support the same 600W peak pulse power specification and are functionally equivalent for general-purpose transient voltage suppression applications.