M1MA142KT1 Equivalent & Substitute Parts

Part Overview

The M1MA142KT1 is a general-purpose rectifier diode manufactured by onsemi, rated for 80 V DC reverse voltage and 100 mA average rectified current in a surface mount SC-70 (SOT-323) package. This component is classified as obsolete, indicating discontinued production and limited availability for new designs. Identifying equivalent substitute parts is necessary to ensure supply chain continuity and support ongoing production requirements for applications utilizing this diode specification.

Substiute Parts

M1MA142KT1

onsemiIn Stock: 14742M1MA142KT1 Datasheet

Current PartRFQ

BAS16WF

Nexperia USA Inc.In Stock: 11130BAS16WF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M1MA142KT1 is determined by electrical and mechanical compatibility within the following criteria:

Electrical Parameters (Primary Substitution Criteria):

• Voltage - DC Reverse (Vr) rating must equal or exceed 80 V
• Current - Average Rectified (Io) rating must equal or exceed 100 mA
• Forward voltage (Vf) must be compatible with circuit operation
• Reverse recovery time (trr) must support switching performance requirements
• Reverse leakage current must not degrade circuit performance

Mechanical Parameters (Secondary Substitution Criteria):

• Package type must be SC-70 or SOT-323 (identical footprint)
• Mounting type must be Surface Mount
• Operating temperature range must support application requirements

Compliance Considerations:

• RoHS compliance status
• Moisture Sensitivity Level (MSL)
• REACH and ECCN classifications

The BAS16WF meets all electrical and mechanical substitution criteria with enhanced ratings and active product status.

Parameter Comparison

Engineering Selection Recommendations

The BAS16WF is a direct electrical and mechanical substitute for the M1MA142KT1 based on the following engineering factors:

Electrical Compatibility: The BAS16WF provides superior electrical ratings across all critical parameters. The 100 V reverse voltage rating exceeds the 80 V requirement, and the 175 mA current rating exceeds the 100 mA requirement. Forward voltage characteristics are compatible within normal circuit tolerances. Reverse recovery time increases from 3 ns to 4 ns, which remains within small-signal diode performance specifications. Reverse leakage current increases from 100 nA to 500 nA; this difference must be evaluated in applications with strict leakage requirements.

Mechanical Compatibility: Both components utilize identical SC-70 (SOT-323) surface mount packaging, ensuring direct footprint compatibility without PCB redesign.

Product Status and Compliance: The M1MA142KT1 is obsolete with limited inventory availability. The BAS16WF is an active product with established supply chains. The BAS16WF meets ROHS3 compliance requirements, whereas the M1MA142KT1 is RoHS non-compliant. The BAS16WF carries AEC-Q101 automotive qualification, providing additional reliability assurance for demanding applications.

Recommendation: The BAS16WF is suitable for direct substitution in applications where the enhanced electrical ratings and improved compliance status are acceptable. Circuit validation is required only if reverse leakage current specifications are critical to application performance.

Frequently Asked Questions (FAQ)

Q: Can the BAS16WF directly replace the M1MA142KT1 without PCB modifications?

A: Yes. Both components use identical SC-70 (SOT-323) surface mount packages with the same pinout and footprint. No PCB layout changes are required.

Q: What are the key electrical differences between these parts?

A: The BAS16WF provides higher voltage (100 V vs. 80 V) and current (175 mA vs. 100 mA) ratings. Reverse recovery time increases slightly from 3 ns to 4 ns. Reverse leakage current increases from 100 nA to 500 nA at the specified test conditions. These differences must be evaluated against specific circuit requirements.

Q: Is the BAS16WF suitable for all applications using the M1MA142KT1?

A: The BAS16WF is suitable for most general-purpose rectification applications. Applications with strict reverse leakage current specifications or precise forward voltage requirements should be evaluated individually.

Q: What is the significance of the product status difference?

A: The M1MA142KT1 is obsolete and no longer manufactured. The BAS16WF is an active product with ongoing production and established supply availability, making it the preferred choice for new designs and ongoing production support.

Q: Does the BAS16WF meet current regulatory requirements?

A: Yes. The BAS16WF is ROHS3 compliant and carries AEC-Q101 automotive qualification. The M1MA142KT1 is RoHS non-compliant. For applications requiring RoHS compliance, the BAS16WF is the appropriate selection.

Q: Are there any performance trade-offs when using the BAS16WF?

A: The BAS16WF exhibits slightly higher reverse recovery time (4 ns vs. 3 ns) and higher reverse leakage current (500 nA vs. 100 nA). These differences are within acceptable ranges for general-purpose rectification but should be verified in applications with stringent switching speed or leakage requirements.