SMBJ70CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ70CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 70V reverse standoff voltage and provides clamping at 125V maximum, with a peak pulse current rating of 4.8A. The device is housed in a DO-214AA (SMB) package and is supplied in Tape & Reel (TR) format.

The SMBJ70CE3/TR13 is an active product with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching electrical parameters, package compatibility, and operational specifications that permit direct functional replacement in circuit applications.

Substiute Parts

SMBJ70CE3/TR13

Microchip TechnologyIn Stock: 1156SMBJ70CE3/TR13 Datasheet

Current PartRFQ

SM6T82CAY

STMicroelectronicsIn Stock: 1503SM6T82CAY Datasheet

SimilarRFQ

SMBJ70CA

Semtech CorporationIn Stock: 10272SMBJ70CA Datasheet

SimilarRFQ

SMBJ70CA

Semtech CorporationIn Stock: 10272SMBJ70CA Datasheet

SimilarRFQ

SMBJ70CA

Semtech CorporationIn Stock: 10272SMBJ70CA Datasheet

SimilarRFQ

SMBJ70CA-13-F

Diodes IncorporatedIn Stock: 6063SMBJ70CA-13-F Datasheet

SimilarRFQ

SMBJ70CA-TP

Micro Commercial CoIn Stock: 9950SMBJ70CA-TP Datasheet

SimilarRFQ

SMBJ70CA-TR

STMicroelectronicsIn Stock: 5917SMBJ70CA-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ70CE3/TR13 are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 70V
• Voltage - Breakdown (Min): 77.8V
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener
• Bidirectional Channels: 1

Secondary Compatibility Parameters:

• Voltage - Clamping (Max) @ Ipp: Range 113V to 146V
• Current - Peak Pulse (10/1000µs): Range 4.8A to 27A
• Power - Peak Pulse: 600W
• Operating Temperature Range: Minimum -55°C to maximum 175°C
• RoHS3 Compliance
• MSL 1 (Unlimited)

Substitute parts maintain the core 70V standoff voltage specification and DO-214AA package format, ensuring mechanical and electrical compatibility. Variations in clamping voltage and peak pulse current are acceptable within the specified ranges, as these parameters define the transient suppression characteristics rather than the fundamental protection threshold.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with RoHS3 compliance and MSL 1 rating, meeting the same environmental and regulatory requirements as the SMBJ70CE3/TR13.

SMBJ70CA-TR (STMicroelectronics): This part maintains the 70V standoff voltage and DO-214AA package with a clamping voltage of 113V and peak pulse current of 5.5A. Operating temperature range is -55 to 150°C. This substitute is suitable for applications where the lower clamping voltage (113V versus 125V) is acceptable and provides marginally higher current handling capability.

SMBJ70CA (Semtech Corporation): Specified for telecom applications, this part offers a 70V standoff voltage with 113V clamping and 5.3A peak pulse current. Operating temperature extends to 175°C, providing enhanced thermal performance. This substitute is appropriate for temperature-sensitive applications requiring extended operating range.

SMBJ70CA-13-F (Diodes Incorporated): This part provides identical electrical specifications to the Semtech SMBJ70CA with 113V clamping and 5.3A peak pulse current. Operating temperature range is -55 to 150°C. This substitute offers equivalent performance with alternative sourcing.

SMBJ70CA-TP (Micro Commercial Co): Supplied in Cut Tape (CT) and Digi-Reel® format, this part matches the 113V clamping and 5.3A specifications with an extended operating temperature range of -55 to 175°C. This substitute is suitable for applications requiring alternative packaging formats while maintaining electrical compatibility.

SM6T82CAY (STMicroelectronics): This TRANSIL™ series part maintains the 70V standoff voltage but features a higher clamping voltage of 146V and significantly higher peak pulse current of 27A (8/20µs pulse). This substitute is appropriate for applications requiring enhanced transient suppression capability and higher current handling. The part includes AEC-Q101 automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ70CA-TR substitute for the SMBJ70CE3/TR13 in all applications?

A: The SMBJ70CA-TR maintains the critical 70V standoff voltage and DO-214AA package format. The primary difference is a lower clamping voltage (113V versus 125V). This substitute is compatible with applications where the reduced clamping voltage does not exceed circuit protection requirements. Verify that the 113V clamping specification meets the overvoltage protection threshold of your specific circuit.

Q: What is the difference between the SMBJ70CA variants from different manufacturers?

A: The SMBJ70CA part number is offered by multiple manufacturers (Semtech, STMicroelectronics, Diodes Incorporated, and Micro Commercial Co) with identical electrical specifications: 70V standoff, 113V clamping, and 5.3A peak pulse current. Differences exist in operating temperature ranges, packaging formats (Tape & Reel versus Cut Tape), and series designations. All variants are functionally equivalent for the core protection function.

Q: When should the SM6T82CAY be selected instead of other substitutes?

A: The SM6T82CAY is selected for applications requiring higher transient suppression capability. With 27A peak pulse current (8/20µs) and 146V clamping voltage, this part handles more severe transient events than the standard SMBJ70 variants. The SM6T82CAY includes AEC-Q101 automotive qualification, making it suitable for automotive and industrial applications with demanding transient protection requirements.

Q: Are there packaging format differences among the substitute parts?

A: Yes. The SMBJ70CE3/TR13 and most substitutes are supplied in Tape & Reel (TR) format. The SMBJ70CA-TP is supplied in Cut Tape (CT) and Digi-Reel® format. All parts use the DO-214AA (SMB) package for surface-mount assembly. Packaging format selection depends on manufacturing equipment and assembly process requirements.

Q: What is the significance of the operating temperature range differences?

A: The SMBJ70CE3/TR13 operates from -65 to 150°C. Substitute parts operate from -55 to 150°C or -55 to 175°C. The lower minimum temperature (-65°C versus -55°C) of the main part provides extended cold-temperature performance. Substitutes with extended upper temperature limits (-55 to 175°C) are suitable for high-temperature applications. Select based on the specific thermal environment of your circuit.

Q: Is the SMBJ70CA-TP compatible with standard SMB footprints?

A: Yes. The SMBJ70CA-TP uses the DO-214AA (SMB) package, which is mechanically and electrically compatible with standard SMB footprints. The difference is in the supply format (Cut Tape and Digi-Reel® versus standard Tape & Reel), not in the component package itself.

Q: Do all substitute parts meet RoHS3 compliance?

A: All listed substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance of the SMBJ70CE3/TR13. This ensures compatibility with modern manufacturing processes and regulatory requirements.