SMBJ8.0E3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ8.0E3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component operates with an 8V reverse standoff voltage and provides 15V maximum clamping voltage at peak pulse current, with a peak pulse power rating of 600W. The device is housed in a DO-214AA (SMB) package and supplied in tape and reel format.

The SMBJ8.0E3/TR13 is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical parameters, mechanical compatibility, and operational specifications that permit direct functional replacement in circuit applications.

Substiute Parts

SMBJ8.0E3/TR13

Microchip TechnologyIn Stock: 1003SMBJ8.0E3/TR13 Datasheet

Current PartRFQ

SMBJ8.0A

MDDIn Stock: 26124SMBJ8.0A Datasheet

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SMBJ8.0A

MDDIn Stock: 26124SMBJ8.0A Datasheet

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SMBJ8.0A-13-F

Diodes IncorporatedIn Stock: 4504SMBJ8.0A-13-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ8.0E3/TR13 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse standoff voltage: 8V (typical)
• Breakdown voltage minimum: 8.89V
• Unidirectional channel configuration: 1 channel
• Package type: DO-214AA / SMB surface mount
• Peak pulse power rating: 600W
• Zener diode type classification
• RoHS3 compliance status
• Moisture sensitivity level: 1 (Unlimited)

Allowable Variation Parameters:

• Clamping voltage (Max) @ Ipp: Range 13.6V to 15V
• Peak pulse current (10/1000µs): Range 40A to 44.2A
• Operating temperature range: Minimum -55°C to maximum 150°C

Substitute parts must maintain identical reverse standoff voltage, breakdown voltage, package configuration, and power rating. Variations in clamping voltage and peak pulse current within the specified ranges do not preclude substitution, as these parameters remain within acceptable operational margins for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

SMBJ8.0A (MDD) and SMBJ8.0A-13-F (Diodes Incorporated) are direct functional equivalents to the SMBJ8.0E3/TR13. Both substitute parts satisfy all critical electrical parameters, maintain identical package configuration, and carry equivalent regulatory compliance certifications.

SMBJ8.0A (MDD): This part exhibits a clamping voltage of 13.6V (versus 15V on the primary part) and peak pulse current of 44.2A (versus 40A). Both values remain within acceptable operational margins for general-purpose transient suppression. The operating temperature range extends to -50°C minimum, which is narrower than the primary part's -65°C specification. This part carries the highest inventory availability at 26,100 units.

SMBJ8.0A-13-F (Diodes Incorporated): This part also provides 13.6V clamping voltage and 44.1A peak pulse current, with an operating temperature range of -55°C to 150°C. The temperature range is intermediate between the primary part and the MDD alternative. This part is available in 4,400 units.

All three parts maintain identical reverse standoff voltage (8V), breakdown voltage (8.89V), peak pulse power (600W), package type (DO-214AA/SMB), and regulatory compliance status (RoHS3, REACH Unaffected, MSL 1). Selection among these parts is determined by inventory availability, temperature range requirements, and supplier preference.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.0A (MDD) be used as a direct replacement for SMBJ8.0E3/TR13?

A: Yes. Both parts share identical reverse standoff voltage (8V), breakdown voltage (8.89V), peak pulse power (600W), and DO-214AA/SMB package configuration. The SMBJ8.0A exhibits a lower clamping voltage (13.6V versus 15V) and higher peak pulse current (44.2A versus 40A), both of which remain within acceptable operational parameters for general-purpose transient suppression applications.

Q: What is the difference between the clamping voltage specifications?

A: The SMBJ8.0E3/TR13 specifies a maximum clamping voltage of 15V at peak pulse current, while both substitute parts specify 13.6V. Lower clamping voltage provides improved transient suppression performance by limiting voltage rise to a lower threshold. This represents an enhancement rather than a limitation for overvoltage protection applications.

Q: Are there temperature range limitations when substituting parts?

A: The SMBJ8.0E3/TR13 operates from -65°C to 150°C. The SMBJ8.0A (MDD) operates from -50°C to 150°C, and the SMBJ8.0A-13-F operates from -55°C to 150°C. If the application requires operation below -50°C, the SMBJ8.0A-13-F or the original SMBJ8.0E3/TR13 must be used. For applications operating above -50°C, all three parts are suitable.

Q: Do all substitute parts use the same package configuration?

A: Yes. All three parts use the DO-214AA (SMB) surface-mount package. They are mechanically and electrically compatible for PCB assembly without modification to footprints or circuit layout.

Q: What regulatory compliance certifications apply to these parts?

A: All three parts carry RoHS3 compliance, REACH Unaffected status, and moisture sensitivity level 1 (unlimited). They are suitable for applications requiring environmental and regulatory compliance in industrial, commercial, and consumer electronics.

Q: How do the peak pulse current ratings affect substitution?

A: The SMBJ8.0E3/TR13 is rated for 40A peak pulse current (10/1000µs), while both substitute parts are rated for approximately 44A. Higher peak pulse current rating indicates enhanced capability to handle transient events without degradation. This represents an improvement in performance margin.

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

A: Yes, provided the application does not require the specific temperature range below -50°C or the exact 15V clamping voltage specification. For general-purpose transient suppression applications, all three parts deliver equivalent functional performance due to matching reverse standoff voltage, breakdown voltage, package type, and power rating.