MSMBJ58CA Equivalent & Substitute Parts

Part Overview

The MSMBJ58CA 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 a reverse standoff voltage of 58V and provides clamping at 93.6V maximum, with a peak pulse current rating of 6.4A. The component is housed in a DO-214AA (SMB) package and is currently active in production with 1,088 pieces available in inventory.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain constraints require alternative sourcing, or when design flexibility permits equivalent components from other manufacturers that meet identical electrical and mechanical specifications.

Substiute Parts

MSMBJ58CA

Microchip TechnologyIn Stock: 1112MSMBJ58CA Datasheet

Current PartRFQ

SMBJ58CA-13

Diodes IncorporatedIn Stock: 3768SMBJ58CA-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSMBJ58CA is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 58V
• Voltage - Breakdown (Min): 64.4V
• Voltage - Clamping (Max) @ Ipp: 93.6V
• Current - Peak Pulse (10/1000µs): 6.4A
• Power - Peak Pulse: 600W
• Type: Zener
• Bidirectional Channels: 1

Mechanical Equivalence Criteria:

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

The SMBJ58CA-13 from Diodes Incorporated meets all electrical specifications and mechanical requirements for direct substitution. Both components share identical voltage ratings, current handling capacity, and power dissipation characteristics. The SMB package designation confirms mechanical compatibility with the original DO-214AA footprint.

Parameter Comparison

Engineering Selection Recommendations

MSMBJ58CA (Microchip Technology):

• Primary selection for applications requiring the full operating temperature range of -65°C to 150°C
• Currently active product status with established supply chain
• Military-grade qualification per MIL-PRF-19500
• Recommended for designs with no temperature constraint limitations

SMBJ58CA-13 (Diodes Incorporated):

• Direct electrical and mechanical equivalent for applications operating within -55°C to 150°C temperature range
• Suitable for general-purpose overvoltage protection where the lower temperature limit of -55°C is acceptable
• Product status is discontinued at DiGi Electronics; verify availability through alternative distribution channels before design implementation
• Identical electrical performance and package compatibility ensure functional equivalence within specified operating conditions

Selection between these components should be based on application temperature requirements and supply chain availability. Both components satisfy identical electrical protection specifications and mechanical mounting requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ58CA-13 be used as a direct replacement for MSMBJ58CA in all applications?

A: The SMBJ58CA-13 provides direct electrical and mechanical substitution for applications operating within the -55°C to 150°C temperature range. Applications requiring operation below -55°C must use the MSMBJ58CA to ensure compliance with the full -65°C to 150°C specification.

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

A: Both components use the DO-214AA (SMB) package designation, confirming identical mechanical footprint and pin configuration for surface-mount PCB assembly.

Q: What is the significance of the "CA" suffix in both part numbers?

A: The "CA" suffix indicates the specific voltage rating and clamping characteristics (58V reverse standoff, 93.6V clamping) within the SMBJ series of TVS diodes.

Q: Does the operating temperature difference affect electrical performance?

A: The electrical parameters (voltage ratings, current capacity, power dissipation) remain constant across the specified operating temperature ranges for both components. The temperature range difference reflects the validated operating envelope for each manufacturer's design.

Q: Are there any compliance or certification differences between these parts?

A: Both components share identical RoHS non-compliance status, REACH unaffected status, and moisture sensitivity level (MSL 1). The MSMBJ58CA carries military-grade qualification per MIL-PRF-19500; the SMBJ58CA-13 specifications do not include this military qualification.

Q: What should be verified before substituting SMBJ58CA-13 for MSMBJ58CA?

A: Confirm that the application's minimum operating temperature requirement does not fall below -55°C. Verify current availability of SMBJ58CA-13 through authorized distributors, as this part is discontinued at DiGi Electronics. Ensure PCB assembly processes are compatible with the SMB package.