MASMBJ14AE3 Equivalent & Substitute Parts

Part Overview

The MASMBJ14AE3 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 14V reverse standoff voltage with a 23.2V maximum clamping voltage and 25.8A peak pulse current capability in a DO-214AA (SMB) package. The device is qualified to MIL-PRF-19500 military standards and operates across an extended temperature range of -65°C to 150°C.

The MASMBJ14AE3 maintains active product status with robust inventory availability. Identifying equivalent and substitute parts is necessary for supply chain continuity, design flexibility, and procurement optimization when the primary component becomes unavailable or when alternative sourcing is required.

Substiute Parts

MASMBJ14AE3

Microchip TechnologyIn Stock: 1160MASMBJ14AE3 Datasheet

Current PartRFQ

SMBJ14A-13

Diodes IncorporatedIn Stock: 4035SMBJ14A-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MASMBJ14AE3 is determined by strict electrical and mechanical parameter matching within the TVS diode category. The following parameters establish substitution eligibility:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 14V
• Voltage - Clamping (Max) @ Ipp: 23.2V
• Current - Peak Pulse (10/1000µs): 25.8A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA or SMB
• Mounting Type: Surface Mount
• Type: Zener
• Unidirectional Channels: 1

The substitute part SMBJ14A-13 (Diodes Incorporated) meets all critical electrical parameters and maintains mechanical compatibility through identical voltage ratings, current handling, power dissipation, and surface-mount packaging. Both components belong to the SMBJ series base product family, confirming functional equivalence for general-purpose transient voltage suppression applications.

Parameter Comparison

*Operating temperature range: SMBJ14A-13 minimum operating temperature is -55°C versus -65°C for MASMBJ14AE3. Applications requiring operation below -55°C require verification of design constraints.

Engineering Selection Recommendations

MASMBJ14AE3 (Microchip Technology) - Primary Component

The MASMBJ14AE3 maintains active product status with military-grade qualification (MIL-PRF-19500) and extended temperature range operation (-65°C to 150°C). This component is suitable for applications requiring military-specification compliance and operation in extreme low-temperature environments. Current inventory of 1,065 pieces supports immediate procurement.

SMBJ14A-13 (Diodes Incorporated) - Substitute Component

The SMBJ14A-13 provides electrical and mechanical equivalence with identical voltage, current, and power specifications. However, this component is discontinued at DiGi Electronics and operates within a narrower temperature range (-55°C to 150°C). Selection of this substitute is appropriate for applications where the -55°C minimum temperature threshold is acceptable and military qualification is not required. The higher inventory availability (3,930 pieces) may support extended procurement windows.

Compliance Considerations

Both components share identical RoHS non-compliance status, REACH unaffected classification, and EAR99 export control designation. No compliance advantage exists between primary and substitute selections.

Frequently Asked Questions (FAQ)

Q: Can SMBJ14A-13 directly replace MASMBJ14AE3 in all applications?

A: SMBJ14A-13 provides direct electrical substitution for applications operating within the -55°C to 150°C temperature range. Applications requiring operation below -55°C or military specification compliance (MIL-PRF-19500) require the MASMBJ14AE3 primary component.

Q: Are the package dimensions identical between MASMBJ14AE3 and SMBJ14A-13?

A: Both components use DO-214AA (SMB) surface-mount packaging, ensuring mechanical compatibility for PCB layout and assembly processes.

Q: What is the significance of the SMBJ series designation?

A: The SMBJ series base product number indicates a family of surface-mount TVS diodes with standardized electrical characteristics. Both MASMBJ14AE3 and SMBJ14A-13 belong to this series, confirming functional equivalence within the 14V voltage class.

Q: Why does SMBJ14A-13 show discontinued status?

A: Discontinued status at DiGi Electronics indicates this component is no longer actively stocked by that distributor. Availability through alternative suppliers or inventory channels may exist. Verify current sourcing options before design implementation.

Q: Are there electrical performance differences between the two components?

A: No. Both components provide identical voltage standoff (14V), breakdown voltage (15.6V minimum), clamping voltage (23.2V maximum), peak pulse current (25.8A), and peak pulse power (600W) specifications for general-purpose transient voltage suppression.

Q: What is the impact of the temperature range difference?

A: The MASMBJ14AE3 operates from -65°C to 150°C, while SMBJ14A-13 operates from -55°C to 150°C. Applications with ambient or junction temperatures below -55°C require the MASMBJ14AE3. Most commercial and industrial applications operate within the -55°C to 150°C range, making SMBJ14A-13 suitable for these use cases.