MA3J142KGL Equivalent & Substitute Parts

Part Overview

The MA3J142KGL is a general-purpose rectifier diode manufactured by Panasonic Electronic Components, rated for 80 V DC reverse voltage and 100 mA average rectified current in a surface mount SMini3-F2 package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical specifications and package compatibility, while substitute parts offer comparable performance within acceptable parameter tolerances for the application.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	80	V
Current - Average Rectified (Io)	100	mA
Voltage - Forward (Vf) (Max) @ If	1.2 @ 100 mA	V
Reverse Recovery Time (trr)	3	ns
Current - Reverse Leakage @ Vr	100 nA @ 75 V	nA
Mounting Type	Surface Mount	-
Package / Case	SC-85	-
Operating Temperature - Junction (Max)	150	°C
Technology	Standard	-
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	-

Substitute Part Grouping Explanation

Substitution of the MA3J142KGL is determined by the following critical parameters:

Parametric Equivalents maintain all electrical specifications within the same tolerance band: reverse voltage rating (80 V), average rectified current (100 mA), forward voltage drop (1.2 V @ 100 mA), and junction temperature rating (150°C). Package compatibility in the SC-85 form factor is required for direct board-level substitution.

Similar Substitutes provide comparable rectification performance with relaxed parameter tolerances. These parts may exceed the original specifications in reverse voltage rating, current capacity, or reverse recovery time, provided they do not introduce incompatibilities with the circuit design. Package form factor differences require mechanical and thermal evaluation.

The MA3J142A0L qualifies as a parametric equivalent, differing only in supplier device package designation (SMini3-F1 versus SMini3-F2) while maintaining identical electrical performance. The BAS16WT1G qualifies as a similar substitute, offering higher voltage and current ratings with improved reverse recovery characteristics, though it employs a different package form factor (SC-70-3 / SOT-323).

Parameter Comparison

Parameter	MA3J142KGL (Main)	MA3J142A0L (Parametric Equivalent)	BAS16WT1G (Similar Substitute)
Manufacturer	Panasonic Electronic Components	Panasonic Electronic Components	onsemi
Voltage - DC Reverse (Vr) (Max)	80 V	80 V	100 V
Current - Average Rectified (Io)	100 mA	100 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 100 mA	1.2 V @ 100 mA	1.25 V @ 150 mA
Reverse Recovery Time (trr)	3 ns	10 ns	6 ns
Current - Reverse Leakage @ Vr	100 nA @ 75 V	100 nA @ 75 V	1 µA @ 75 V
Capacitance @ Vr, F	Not specified	15 pF @ 0V, 1MHz	2 pF @ 0V, 1MHz
Package / Case	SC-85 (SMini3-F2)	SC-85 (SMini3-F1)	SC-70 (SOT-323)
Operating Temperature - Junction	150°C (Max)	150°C (Max)	-55°C ~ 150°C
Product Status	Obsolete	Obsolete	Active
Technology	Standard	Standard	Standard
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MA3J142A0L Selection: This part is recommended as the primary equivalent for direct replacement of the MA3J142KGL. Both components are manufactured by Panasonic Electronic Components and maintain identical electrical specifications. The difference in supplier device package designation (SMini3-F1 versus SMini3-F2) does not affect electrical performance. Both parts share obsolete product status; however, the MA3J142A0L maintains higher inventory availability (1820 pcs versus 1106 pcs). This part is suitable for applications requiring exact electrical parameter matching and SC-85 package compatibility.

BAS16WT1G Selection: This part is recommended as a substitute for applications where higher voltage and current ratings provide design margin or where active product status is required for long-term supply assurance. The BAS16WT1G is manufactured by onsemi and maintains active product status, ensuring continued availability and manufacturing support. The higher reverse voltage rating (100 V versus 80 V) and current capacity (200 mA versus 100 mA) provide operational headroom. The SC-70-3 (SOT-323) package requires mechanical and thermal board layout evaluation to confirm compatibility with existing PCB designs. The BAS16WT1G is RoHS3 compliant and REACH unaffected, providing regulatory compliance advantages. Reverse recovery time (6 ns) is intermediate between the main part (3 ns) and the parametric equivalent (10 ns), suitable for general-purpose rectification applications.

Frequently Asked Questions (FAQ)

Q: Can MA3J142A0L be used as a direct replacement for MA3J142KGL?

A: Yes. The MA3J142A0L is a parametric equivalent with identical electrical specifications: 80 V reverse voltage, 100 mA average rectified current, 1.2 V forward voltage drop at 100 mA, and 150°C maximum junction temperature. Both components use SC-85 package form factor. The supplier device package designation differs (SMini3-F1 versus SMini3-F2), but this does not affect electrical performance or board-level compatibility.

Q: What are the limitations of using BAS16WT1G as a substitute?

A: The BAS16WT1G employs a different package form factor (SC-70-3 / SOT-323) compared to the MA3J142KGL (SC-85 / SMini3-F2). PCB layout modifications are required to accommodate the different package footprint. The reverse leakage current is higher (1 µA @ 75 V versus 100 nA @ 75 V), which may affect low-power circuit performance. The reverse recovery time (6 ns) is longer than the original part (3 ns), which may impact high-frequency switching applications. These differences require circuit-level evaluation before implementation.

Q: Why is product status relevant to part selection?

A: The MA3J142KGL and MA3J142A0L are both classified as obsolete, indicating discontinued manufacturing and limited long-term availability. The BAS16WT1G maintains active product status, ensuring continued manufacturing, quality assurance, and supply chain support. For applications requiring extended product lifecycle or high-volume procurement, active-status parts provide supply continuity advantages.

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

A: All three parts share identical moisture sensitivity level (MSL 1 - Unlimited) and ECCN classification (EAR99). The BAS16WT1G provides additional regulatory documentation: RoHS3 compliance and REACH unaffected status. The MA3J142KGL and MA3J142A0L do not specify these certifications in the provided data. Applications requiring explicit RoHS3 or REACH compliance should prioritize the BAS16WT1G.

Q: What is the significance of reverse recovery time differences?

A: Reverse recovery time (trr) affects switching speed and switching losses in rectification circuits. The MA3J142KGL specifies 3 ns, the MA3J142A0L specifies 10 ns, and the BAS16WT1G specifies 6 ns. In low-frequency rectification applications (power supplies, battery charging), these differences are negligible. In high-frequency switching applications (switching power supplies, RF circuits), the longer recovery time of the MA3J142A0L may introduce additional switching losses. The BAS16WT1G provides intermediate performance suitable for general-purpose applications.

Q: Can these parts be used interchangeably in all circuit topologies?

A: No. While all three parts function as general-purpose rectifier diodes, circuit-specific factors determine compatibility. The higher current rating of the BAS16WT1G (200 mA versus 100 mA) is compatible with lower-current applications but does not provide performance advantages. The different package form factor of the BAS16WT1G requires PCB layout verification. Applications operating near the 100 mA current limit should not substitute the BAS16WT1G without thermal analysis, as package thermal characteristics differ between SC-85 and SC-70-3 form factors.

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