MMBF2201NT1G Equivalent & Substitute Parts

Part Overview

The MMBF2201NT1G is an N-Channel MOSFET manufactured by onsemi, rated for 20V drain-to-source voltage with 300mA continuous drain current in a surface mount SC-70-3 (SOT323) package. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. Identification of equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and design transitions to active alternatives.

Substiute Parts

MMBF2201NT1G

onsemiIn Stock: 125337MMBF2201NT1G Datasheet

Current PartRFQ

FDY300NZ

onsemiIn Stock: 29326FDY300NZ Datasheet

SimilarRFQ

MMBF0201NLT1G

onsemiIn Stock: 18000MMBF0201NLT1G Datasheet

SimilarRFQ

NX3008NBKW,115

Nexperia USA Inc.In Stock: 781340NX3008NBKW,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBF2201NT1G is determined by the following critical parameters:

Electrical Compatibility Requirements:

• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Drain to Source Voltage (Vdss): Minimum 20V
• Continuous Drain Current (Id): Minimum 300mA
• Operating Temperature Range: -55°C to 150°C (TJ)

Package Compatibility:

• Surface Mount technology required
• SC-70 or SOT-323 package preferred for direct mechanical substitution

Compliance Requirements:

• RoHS3 Compliant
• REACH Unaffected status

Substitute parts are grouped into two categories based on package compatibility and electrical performance:

Category 1 - Direct Package Substitutes (SC-70/SOT-323): Parts maintaining the same or compatible package footprint with equivalent or superior electrical ratings.

Category 2 - Functional Equivalents (Alternative Packages): Parts with equivalent electrical performance but different surface mount packages, requiring PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

MMBF0201NLT1G (onsemi) - Recommended Primary Substitute

The MMBF0201NLT1G is the preferred substitute for the MMBF2201NT1G. Both devices share identical electrical specifications (20V Vdss, 300mA Id, 1Ohm Rds On @ 10V, 2.4V Vgs(th)). The MMBF0201NLT1G is classified as "Active" product status, ensuring long-term availability and supply continuity. The primary difference is the package format: SOT-23-3 (TO-236) versus SC-70-3 (SOT323). This substitution requires PCB layout modification but maintains full electrical compatibility. Both devices are ROHS3 Compliant with identical moisture sensitivity levels.

NX3008NBKW,115 (Nexperia USA Inc.) - Direct Package Substitute

The NX3008NBKW,115 maintains the same SC-70/SOT-323 package as the MMBF2201NT1G, enabling direct mechanical substitution without PCB redesign. This device exceeds the electrical requirements with 30V Vdss (versus 20V) and 350mA Id (versus 300mA). The NX3008NBKW,115 is classified as "Active" with AEC-Q101 automotive qualification. Gate charge and threshold voltage characteristics differ from the original part; circuit validation is required for timing-sensitive applications. This part is suitable for applications where package compatibility is critical.

FDY300NZ (onsemi) - Higher Current Alternative

The FDY300NZ provides doubled continuous drain current (600mA versus 300mA) and significantly higher power dissipation capability (625mW versus 150mW). This part is classified as "Last Time Buy," indicating limited future availability. The SC-89-3 package differs from the original SC-70-3, requiring PCB layout modification. The FDY300NZ features lower gate charge (1.1 nC) and threshold voltage (1.3V), which may affect circuit timing. This substitute is appropriate for applications requiring higher current capacity with acceptance of package change and limited supply window.

Frequently Asked Questions (FAQ)

Q: Can MMBF0201NLT1G directly replace MMBF2201NT1G without circuit modification?

A: The MMBF0201NLT1G provides identical electrical performance and is electrically interchangeable. However, the package differs (SOT-23-3 versus SC-70-3), requiring PCB footprint modification. No circuit-level changes are necessary if the new package can be accommodated on the board.

Q: What is the primary advantage of NX3008NBKW,115 as a substitute?

A: The NX3008NBKW,115 maintains the same SC-70/SOT-323 package as the MMBF2201NT1G, allowing direct mechanical substitution without PCB redesign. It also provides higher voltage rating (30V) and current capacity (350mA), offering design margin improvement.

Q: Why is MMBF2201NT1G marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. Existing inventory remains available for legacy product support and maintenance applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (FDY300NZ, MMBF0201NLT1G, and NX3008NBKW,115) are ROHS3 Compliant with REACH Unaffected status, matching the compliance profile of the original MMBF2201NT1G.

Q: What is the difference between SC-70 and SOT-23 packages?

A: SC-70 (SOT-323) and SOT-23-3 (TO-236) are both three-terminal surface mount packages but have different physical dimensions and PCB footprints. SC-70 is smaller and more compact, while SOT-23 is larger. Direct substitution between these packages requires PCB layout modification.

Q: Can FDY300NZ be used in all applications where MMBF2201NT1G is used?

A: FDY300NZ is electrically compatible but has different package dimensions (SC-89-3 versus SC-70-3) and different gate charge characteristics (1.1 nC versus unspecified). Applications with timing-critical gate drive circuits require validation. The "Last Time Buy" status limits long-term availability.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the same temperature range as the original: -55°C to 150°C (TJ), ensuring thermal compatibility in existing designs.

Q: Is the NX3008NBKW,115 suitable for automotive applications?

A: Yes. The NX3008NBKW,115 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. The original MMBF2201NT1G does not carry automotive qualification.