MXLSMBJ7.0AE3 Equivalent & Substitute Parts

Part Overview

The MXLSMBJ7.0AE3 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology. This surface mount component is designed for general-purpose transient voltage protection applications, featuring a 7V reverse standoff voltage and 12V maximum clamping voltage at peak pulse current. The device is housed in a DO-214AA (SMB) package and is rated for 50A peak pulse current with 600W peak pulse power dissipation.

The MXLSMBJ7.0AE3 maintains active product status with full military-grade qualification under MIL-PRF-19500. Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within the specified electrical and mechanical parameter ranges of alternative qualified sources.

Substiute Parts

MXLSMBJ7.0AE3

Microchip TechnologyIn Stock: 1249MXLSMBJ7.0AE3 Datasheet

Current PartRFQ

SMBJ7.0A-13

Diodes IncorporatedIn Stock: 903SMBJ7.0A-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MXLSMBJ7.0AE3 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (10/1000µs): 50A
• Power - Peak Pulse: 600W
• Type: Zener
• Unidirectional Channels: 1

Mechanical Equivalence Criteria:

• Package / Case: DO-214AA or SMB
• Mounting Type: Surface Mount

The SMBJ7.0A-13 manufactured by Diodes Incorporated satisfies all electrical parameters and mechanical requirements for direct substitution. This part maintains identical voltage ratings, peak pulse current capacity, and power dissipation specifications. The operating temperature range of the substitute part (-55°C to 150°C) encompasses the primary application envelope, with the lower bound differing by 10°C from the MXLSMBJ7.0AE3 specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (MXLSMBJ7.0AE3): The MXLSMBJ7.0AE3 is the preferred selection for applications requiring military-grade qualification under MIL-PRF-19500. This component maintains active product status with established supply availability (1146 units in stock). The extended operating temperature range (-65°C to 150°C) provides margin for extreme environmental conditions.

Substitute Component (SMBJ7.0A-13): The SMBJ7.0A-13 from Diodes Incorporated is electrically and mechanically equivalent to the MXLSMBJ7.0AE3 across all critical parameters. However, this part is discontinued at DiGi Electronics and carries a reduced operating temperature lower bound (-55°C versus -65°C). Selection of this substitute is appropriate for applications where the -55°C minimum temperature specification is acceptable and military qualification is not a contractual requirement. The substitute maintains identical RoHS non-compliance status and REACH unaffected classification, ensuring regulatory consistency.

Compliance Considerations: Both components are RoHS non-compliant and REACH unaffected. Design teams must verify that these compliance statuses align with end-product regulatory requirements before component selection.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ7.0A-13 be used as a direct replacement for the MXLSMBJ7.0AE3 in all applications?

A: The SMBJ7.0A-13 is electrically and mechanically equivalent across all specified parameters. However, applications requiring military-grade qualification (MIL-PRF-19500) must use the MXLSMBJ7.0AE3. Additionally, applications operating below -55°C require the MXLSMBJ7.0AE3 due to its extended temperature range.

Q: What is the significance of the DO-214AA package designation?

A: DO-214AA is the industry-standard package outline for SMB (Surface Mount Body) TVS diodes. Both the MXLSMBJ7.0AE3 and SMBJ7.0A-13 use this package, ensuring identical PCB footprint and mounting compatibility.

Q: Are there differences in peak pulse current or clamping voltage between these parts?

A: No. Both components are rated for 50A peak pulse current (10/1000µs) and 12V maximum clamping voltage at peak pulse current. These parameters are identical.

Q: Why is the SMBJ7.0A-13 discontinued at DiGi Electronics?

A: Component discontinuation is a supply-chain decision made by distributors and is not indicative of technical obsolescence. The SMBJ7.0A-13 remains functionally equivalent to the MXLSMBJ7.0AE3 and may be available through alternative distribution channels.

Q: What does "RoHS non-compliant" mean for these components?

A: RoHS non-compliance indicates that these components do not meet the Restriction of Hazardous Substances directive requirements. Design teams must verify that end-product regulatory requirements permit the use of RoHS non-compliant components.

Q: Can these TVS diodes be used for power line protection applications?

A: No. Both the MXLSMBJ7.0AE3 and SMBJ7.0A-13 are designated for general-purpose applications and are not rated for power line protection.

Q: What is the difference between "Reverse Standoff Voltage" and "Clamping Voltage"?

A: Reverse Standoff Voltage (7V) is the maximum voltage the TVS diode blocks without conducting. Clamping Voltage (12V) is the maximum voltage across the diode when it conducts at peak pulse current. The clamping voltage represents the protection level provided during a transient event.