MXLSMBJ14AE3 Equivalent & Substitute Parts

Part Overview

The MXLSMBJ14AE3 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology in the SMBJ (DO-214AA) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 14V reverse standoff voltage and 23.2V maximum clamping voltage. The part is currently active in production with 691 pieces in stock. Substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility across qualified manufacturers is needed while maintaining electrical and mechanical compatibility.

Substiute Parts

MXLSMBJ14AE3

Microchip TechnologyIn Stock: 768MXLSMBJ14AE3 Datasheet

Current PartRFQ

SMBJ14A-13

Diodes IncorporatedIn Stock: 4035SMBJ14A-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MXLSMBJ14AE3 is determined by strict electrical and mechanical parameter matching. The following criteria establish compatibility:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 14V
• Voltage - Breakdown (Min): 15.6V
• Voltage - Clamping (Max) @ Ipp: 23.2V
• Current - Peak Pulse (10/1000µs): 25.8A
• Power - Peak Pulse: 600W

Mechanical Parameters (Must Match):

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

Functional Parameters (Must Match):

• Applications: General Purpose
• Category: Transient Voltage Suppressors (TVS)

The substitute part SMBJ14A-13 from Diodes Incorporated meets all electrical and mechanical requirements for direct substitution. Operating temperature range differences do not preclude substitution when the application operates within the overlapping temperature window (-55°C to 150°C).

Parameter Comparison

*Partial match: Operating temperature overlap is -55°C to 150°C. Applications requiring operation below -55°C require verification against specific design requirements.

Engineering Selection Recommendations

Primary Selection: MXLSMBJ14AE3 (Microchip Technology)

The MXLSMBJ14AE3 is the recommended primary component selection. It maintains active product status with 691 pieces in current inventory. The part carries MIL-PRF-19500 military qualification and operates across the full temperature range of -65°C to 150°C, providing maximum operational flexibility for demanding applications.

Substitute Selection: SMBJ14A-13 (Diodes Incorporated)

The SMBJ14A-13 is a qualified substitute when the primary part is unavailable. This part matches all critical electrical parameters and mechanical specifications. However, the SMBJ14A-13 is listed as discontinued at DiGi Electronics, indicating limited future availability. The operating temperature range is -55°C to 150°C, which is suitable for applications that do not require operation below -55°C. Both parts share identical RoHS non-compliance status, MSL rating, and REACH compliance status, ensuring regulatory consistency in design implementation.

Inventory Consideration:

The SMBJ14A-13 has significantly higher inventory availability (3930 pieces) compared to the primary part, which may support extended production runs or supply chain redundancy strategies.

Frequently Asked Questions (FAQ)

Q: Can SMBJ14A-13 be used as a direct replacement for MXLSMBJ14AE3 in all applications?

A: The SMBJ14A-13 is electrically and mechanically compatible for applications operating within the temperature range of -55°C to 150°C. Applications requiring operation below -55°C must use the MXLSMBJ14AE3 to ensure compliance with the full specified operating temperature range.

Q: Are there package compatibility concerns between these parts?

A: Both parts use the DO-214AA (SMB) surface mount package. They are mechanically and electrically interchangeable at the board level without requiring PCB redesign or layout modifications.

Q: What is the significance of the MIL-PRF-19500 qualification on the MXLSMBJ14AE3?

A: MIL-PRF-19500 qualification indicates the MXLSMBJ14AE3 meets military performance standards for semiconductor devices. This qualification is specific to the Microchip part and is not listed for the Diodes Incorporated substitute. Applications requiring military-grade components must specify the MXLSMBJ14AE3.

Q: Why is the SMBJ14A-13 listed as discontinued?

A: Discontinuation at DiGi Electronics indicates this distributor no longer actively stocks or supports this part. However, the part may remain available through other authorized distributors or direct manufacturer channels. Verify current availability through alternative supply sources before committing to this substitute.

Q: Do the RoHS non-compliance statuses of both parts affect substitution?

A: Both parts share identical RoHS non-compliance status. Substitution does not introduce new regulatory compliance concerns. Applications subject to RoHS requirements must address this status for both the primary and substitute parts equally.

Q: What electrical parameters are critical for substitution compatibility?

A: The following parameters must match exactly: Voltage - Reverse Standoff (14V), Voltage - Breakdown (15.6V), Voltage - Clamping (23.2V), Current - Peak Pulse (25.8A), and Power - Peak Pulse (600W). Any deviation in these parameters indicates incompatibility.