MXLSMBJ85CA Equivalent & Substitute Parts

Part Overview

The MXLSMBJ85CA 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 an 85V reverse standoff voltage and provides 137V maximum clamping voltage at peak pulse current. The component is housed in a DO-214AA (SMB) package and is qualified to MIL-PRF-19500 military standards.

The MXLSMBJ85CA maintains active product status with 810 units currently in stock. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate alternative sourcing requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

MXLSMBJ85CA

Microchip TechnologyIn Stock: 916MXLSMBJ85CA Datasheet

Current PartRFQ

SMBJ85CA-13

Diodes IncorporatedIn Stock: 4330SMBJ85CA-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MXLSMBJ85CA are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 85V
• Voltage - Breakdown (Min): 94.4V
• Voltage - Clamping (Max) @ Ipp: 137V
• Current - Peak Pulse (10/1000µs): 4.4A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA or SMB
• Mounting Type: Surface Mount
• Type: Zener
• Bidirectional Channels: 1

The SMBJ85CA-13 from Diodes Incorporated satisfies all critical electrical parameters and maintains identical package specifications. Both components are classified as general-purpose TVS diodes with matching voltage ratings, peak pulse current capacity, and peak pulse power dissipation. The substitute part operates within a narrower temperature range (-55°C to 150°C versus -65°C to 150°C), which represents a constraint for applications requiring extended low-temperature operation below -55°C.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ85CA-13 from Diodes Incorporated is electrically and mechanically equivalent to the MXLSMBJ85CA for applications operating within the temperature range of -55°C to 150°C. Both components share identical voltage ratings, peak pulse current specifications, and package configurations, enabling direct substitution in surface-mount circuit designs.

The primary consideration for component selection is the operating temperature requirement. The MXLSMBJ85CA supports operation down to -65°C, while the SMBJ85CA-13 is rated to -55°C. Applications requiring operation below -55°C must use the MXLSMBJ85CA or identify alternative parts with extended low-temperature ratings.

Both parts maintain identical RoHS non-compliance status and REACH unaffected classification, ensuring consistent regulatory compliance across designs. The SMBJ85CA-13 is currently discontinued at DiGi Electronics, which may impact long-term availability for new designs. The MXLSMBJ85CA maintains active product status with established inventory levels.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ85CA-13 be used as a direct replacement for the MXLSMBJ85CA in all applications?

A: The SMBJ85CA-13 is electrically and mechanically equivalent for applications operating between -55°C and 150°C. Applications requiring operation below -55°C must use the MXLSMBJ85CA or identify alternative parts with extended low-temperature specifications.

Q: Are the package dimensions identical between these two parts?

A: Both the MXLSMBJ85CA and SMBJ85CA-13 use the DO-214AA (SMB) surface-mount package. Package dimensions and land pattern requirements are identical, enabling direct PCB layout compatibility.

Q: What is the significance of the voltage ratings matching exactly?

A: Identical voltage ratings (85V reverse standoff, 94.4V breakdown minimum, 137V clamping maximum) ensure that both components provide equivalent overvoltage protection performance. The transient voltage suppression characteristics remain consistent across both parts.

Q: Why is the SMBJ85CA-13 discontinued at DiGi Electronics?

A: Product discontinuation is a supply chain decision made by distributors and manufacturers. The MXLSMBJ85CA remains in active production with available inventory, making it the preferred choice for new designs requiring long-term component availability.

Q: Do both parts meet the same compliance and qualification standards?

A: Both components are RoHS non-compliant and REACH unaffected. The MXLSMBJ85CA carries MIL-PRF-19500 military qualification. Compliance requirements should be verified against specific application and regulatory standards.

Q: What is the peak pulse power dissipation capacity?

A: Both the MXLSMBJ85CA and SMBJ85CA-13 are rated for 600W peak pulse power dissipation at the specified 10/1000µs pulse waveform, providing equivalent transient energy absorption capability.