2SK2744(F) N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The 2SK2744(F) is an N-Channel MOSFET manufactured by Toshiba Semiconductor and Storage, rated for 50V drain-to-source voltage with 45A continuous drain current in a TO-3P package. This device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The TO-3P through-hole package and specific electrical characteristics define the substitution criteria for this component.

Substiute Parts

2SK2744(F)

Toshiba Semiconductor and StorageIn Stock: 10572SK2744(F) Datasheet

Current PartRFQ

TK40E06N1,S1X

Toshiba Semiconductor and StorageIn Stock: 1040TK40E06N1,S1X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SK2744(F) is determined by the following critical parameters:

Electrical Compatibility Criteria:

• FET Type: N-Channel topology must be maintained
• Drain-to-Source Voltage (Vdss): Substitute must equal or exceed 50V rating
• Continuous Drain Current (Id): Substitute must support minimum 45A at 25°C
• On-State Resistance (Rds On): Lower or equivalent values ensure thermal performance
• Gate Threshold Voltage (Vgs(th)): Must fall within compatible switching range
• Power Dissipation: Substitute must handle thermal load requirements

Mechanical Compatibility Criteria:

• Mounting Type: Through-hole configuration required
• Package Form Factor: Physical dimensions must accommodate TO-3P or equivalent footprint

The substitute part TK40E06N1,S1X meets the core electrical requirements with higher voltage rating (60V) and comparable current handling (40A), though in a different package form (TO-220). This represents a functional alternative where circuit board layout can accommodate the package transition.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The 2SK2744(F) is classified as obsolete, while the substitute TK40E06N1,S1X maintains active product status with Toshiba Semiconductor and Storage. Active status ensures continued availability, technical support, and manufacturing consistency.

Compliance and Certification: The TK40E06N1,S1X carries RoHS3 compliance certification, meeting current environmental and regulatory standards. Both parts share identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications, confirming equivalent trade and export status.

Electrical Performance: The substitute part provides higher voltage headroom (60V vs. 50V Vdss), reducing stress margin in applications. The lower on-state resistance (10.4 mOhm vs. 20 mOhm) improves thermal efficiency. Continuous drain current is slightly reduced (40A vs. 45A), requiring verification that application peak current demands do not exceed 40A sustained operation.

Thermal Considerations: Power dissipation rating of the substitute (67W) is lower than the original (125W). Applications requiring the full 125W thermal budget must evaluate whether the reduced rating accommodates circuit requirements or necessitates additional thermal management.

Package Transition: The shift from TO-3P-3 to TO-220-3 package requires PCB layout modification. Both are through-hole configurations with compatible mounting methodology, but physical footprint and lead spacing differ. Thermal performance characteristics also differ due to package geometry variations.

Frequently Asked Questions (FAQ)

Q: Can the TK40E06N1,S1X directly replace the 2SK2744(F) without circuit modification?

A: Electrical substitution is feasible based on N-Channel topology, voltage rating compatibility, and gate threshold voltage alignment. However, package transition from TO-3P-3 to TO-220-3 requires PCB layout redesign. The reduced continuous current rating (40A vs. 45A) must be verified against application requirements.

Q: What is the significance of the lower power dissipation rating in the substitute part?

A: The TK40E06N1,S1X is rated for 67W maximum power dissipation compared to 125W for the 2SK2744(F). Applications operating near the original 125W thermal limit require thermal analysis to confirm the substitute can dissipate the expected power without exceeding junction temperature limits.

Q: Are there differences in gate drive requirements between these parts?

A: Gate threshold voltages are similar (3.5V vs. 4V), ensuring compatible gate drive circuits. However, gate charge differs significantly (68 nC vs. 23 nC), affecting switching speed and drive circuit current demands. Lower gate charge in the substitute reduces driver power consumption.

Q: How does the package change affect thermal performance?

A: TO-220 packages typically exhibit higher thermal resistance than TO-3P packages due to different lead frame geometry and mounting surface area. Thermal management design must account for this difference, potentially requiring increased heatsink surface area or improved thermal interface materials.

Q: Is the substitute part suitable for high-frequency switching applications?

A: The TK40E06N1,S1X exhibits lower gate charge (23 nC) and input capacitance (1700 pF), characteristics favorable for higher switching frequencies. The original 2SK2744(F) has higher gate charge (68 nC), making it more suitable for lower frequency applications. Application frequency requirements determine suitability.

Q: What compliance advantages does the active product status provide?

A: Active product status ensures ongoing manufacturing, technical documentation updates, and supplier availability. The obsolete 2SK2744(F) faces potential supply discontinuation and reduced manufacturer support. The TK40E06N1,S1X RoHS3 compliance also meets current environmental regulations, whereas the original part predates these standards.

Q: Can the substitute handle the same current levels as the original?

A: The substitute is rated for 40A continuous drain current versus 45A for the original. Applications requiring sustained current above 40A must use alternative parts or operate the substitute at reduced duty cycles with thermal margin verification.