MXLSMBJ16A Equivalent & Substitute Parts

Part Overview

The MXLSMBJ16A is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 16V reverse standoff voltage with a 26V maximum clamping voltage and 23.1A peak pulse current capability in the DO-214AA (SMB) package. The part maintains active product status with military-grade qualification per MIL-PRF-19500. Identification of equivalent and substitute parts is necessary to address supply chain continuity, inventory optimization, and design flexibility while maintaining electrical and mechanical compatibility.

Substiute Parts

MXLSMBJ16A

Microchip TechnologyIn Stock: 1058MXLSMBJ16A Datasheet

Current PartRFQ

SMBJ16A-13

Diodes IncorporatedIn Stock: 838SMBJ16A-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MXLSMBJ16A is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 16V
• Voltage - Breakdown (Min): 17.8V
• Voltage - Clamping (Max) @ Ipp: 26V
• Current - Peak Pulse (10/1000µs): 23.1A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA or SMB
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

The SMBJ16A-13 from Diodes Incorporated satisfies all critical electrical parameters and maintains mechanical compatibility through identical voltage ratings, peak pulse current, and surface-mount SMB packaging. Both parts operate within overlapping temperature ranges suitable for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

MXLSMBJ16A (Microchip Technology) is the primary component selection for applications requiring active product status and military-grade qualification per MIL-PRF-19500. This part is suitable for designs where long-term availability and military compliance are specified requirements.

SMBJ16A-13 (Diodes Incorporated) provides electrical and mechanical equivalence with identical voltage and current ratings. However, this part is discontinued at DiGi Electronics and carries a reduced operating temperature minimum of -55°C compared to the MXLSMBJ16A's -65°C. Selection of this substitute is appropriate only when the higher minimum operating temperature is acceptable for the application and supply chain constraints necessitate its use.

Both parts maintain identical RoHS non-compliance status, REACH unaffected classification, and unlimited moisture sensitivity level (MSL 1), ensuring consistent compliance posture across substitution.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ16A-13 be used as a direct replacement for the MXLSMBJ16A in all applications?

A: The SMBJ16A-13 provides electrical equivalence across all critical parameters: 16V reverse standoff, 17.8V minimum breakdown, 26V clamping voltage, and 23.1A peak pulse current. Both parts use identical DO-214AA (SMB) surface-mount packaging. The primary consideration is the operating temperature range: the SMBJ16A-13 operates from -55°C to 150°C, while the MXLSMBJ16A operates from -65°C to 150°C. Substitution is valid when the application does not require operation below -55°C.

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

A: DO-214AA and SMB refer to the same surface-mount package form factor. Both the MXLSMBJ16A and SMBJ16A-13 use this standardized package, ensuring mechanical and thermal compatibility on printed circuit boards without requiring layout modifications.

Q: Why is the SMBJ16A-13 listed as discontinued?

A: The SMBJ16A-13 is discontinued at DiGi Electronics, indicating that this distributor no longer actively stocks or supports this part. However, the part may remain available through alternative suppliers or existing inventory channels. The MXLSMBJ16A maintains active product status and represents the recommended selection for new designs and ongoing production.

Q: Are there compliance differences between these two parts?

A: Both parts share identical compliance characteristics: RoHS non-compliant, REACH unaffected, MSL 1 (unlimited), ECCN EAR99, and HTSUS 8541.10.0080. The MXLSMBJ16A carries military-grade qualification per MIL-PRF-19500, which the SMBJ16A-13 does not specify. This qualification is relevant only for applications with explicit military or aerospace requirements.

Q: What parameters must remain constant for a valid TVS diode substitution?

A: For the MXLSMBJ16A, valid substitutions must maintain: 16V reverse standoff voltage, 17.8V minimum breakdown voltage, 26V maximum clamping voltage, 23.1A peak pulse current, 600W peak pulse power, unidirectional (single-channel) configuration, and surface-mount SMB packaging. Deviations in any of these parameters result in incompatible electrical or mechanical performance.