MASMBJ58CAE3 Equivalent & Substitute Parts

Part Overview

The MASMBJ58CAE3 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 currently active in production and maintains military-grade qualification under MIL-PRF-19500. Substitute parts are identified to address inventory availability, manufacturing continuity, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

MASMBJ58CAE3

Microchip TechnologyIn Stock: 932MASMBJ58CAE3 Datasheet

Current PartRFQ

SMBJ58CA-13

Diodes IncorporatedIn Stock: 3768SMBJ58CA-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MASMBJ58CAE3 are qualified based on electrical parameter equivalence and mechanical compatibility. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

• 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
• Bidirectional Channels: 1
• Type: Zener

Mechanical Parameters (Must Match):

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

Acceptable Variations:

• Operating Temperature Range: Minimum temperature may vary (substitute minimum of -55°C is acceptable for applications not requiring -65°C operation)
• Product Status: Active or Discontinued at distributor (electrical performance remains equivalent)
• Manufacturer: Different manufacturers with identical electrical and mechanical specifications

Parameter Comparison

Engineering Selection Recommendations

MASMBJ58CAE3 (Microchip Technology) - Primary Selection

The MASMBJ58CAE3 is the original specification component with active product status and military-grade qualification (MIL-PRF-19500). This part is suitable for all applications requiring the full operating temperature range of -65°C to 150°C. Current inventory of 874 pieces supports immediate procurement. This component is recommended for applications with stringent temperature requirements or where military qualification is mandatory.

SMBJ58CA-13 (Diodes Incorporated) - Substitute Selection

The SMBJ58CA-13 provides electrical and mechanical equivalence to the MASMBJ58CAE3 with identical voltage clamping, breakdown, and current ratings. The operating temperature range of -55°C to 150°C is suitable for commercial and industrial applications where the minimum operating temperature does not fall below -55°C. Although listed as discontinued at DiGi Electronics, this part maintains equivalent electrical performance and package compatibility. Higher inventory availability (3700 pieces) may support extended production runs or supply chain continuity. Selection of this substitute requires confirmation that the application environment does not require operation below -55°C.

Frequently Asked Questions (FAQ)

Q: Can SMBJ58CA-13 be used as a direct replacement for MASMBJ58CAE3?

A: Yes, the SMBJ58CA-13 is electrically and mechanically equivalent for applications with minimum operating temperatures of -55°C or higher. Both parts share identical voltage ratings (58V standoff, 93.6V clamp), current ratings (6.4A peak pulse), and package specifications (DO-214AA, SMB surface mount). The primary difference is the minimum operating temperature specification.

Q: What is the significance of the operating temperature range difference?

A: The MASMBJ58CAE3 operates from -65°C to 150°C, while the SMBJ58CA-13 operates from -55°C to 150°C. This 10°C difference in minimum temperature affects suitability for applications in extreme cold environments. For applications operating above -55°C, both parts perform identically. For applications requiring operation below -55°C, the MASMBJ58CAE3 is the required selection.

Q: Are the package specifications identical between these parts?

A: Yes. Both the MASMBJ58CAE3 and SMBJ58CA-13 use the DO-214AA package, commonly designated as SMB. This ensures identical PCB footprint, solder pad layout, and mechanical fit. No board redesign or rework is required when substituting between these parts.

Q: What does "Discontinued at DiGi Electronics" mean for the SMBJ58CA-13?

A: This status indicates that the SMBJ58CA-13 is no longer actively stocked by DiGi Electronics as a distributor. However, the part remains electrically and mechanically valid for circuit applications. Availability through alternative distributors or direct manufacturer channels may exist. This status does not affect the electrical performance or compatibility of the component.

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

A: Both parts are RoHS non-compliant and REACH Unaffected. The MASMBJ58CAE3 carries military-grade qualification (MIL-PRF-19500), while the SMBJ58CA-13 does not specify this qualification. For applications requiring military certification, the MASMBJ58CAE3 is the appropriate selection.

Q: Can these parts be used interchangeably in existing designs?

A: Interchangeability depends on application requirements. If the design operates entirely within the -55°C to 150°C temperature range and does not mandate military qualification, the SMBJ58CA-13 is a valid substitute. If the design requires operation below -55°C or military certification, the MASMBJ58CAE3 must be used. No circuit modifications are required for substitution within these constraints.