AOTF292L N-Channel MOSFET 100V 70A TO-220F Equivalent & Substitute Parts

Part Overview

The AOTF292L is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 100V drain-to-source voltage with 70A continuous drain current at 25°C. This device is housed in a TO-220F through-hole package and is part of the AlphaSGT™ series. The AOTF292L holds Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility. Substitutes must maintain identical or superior performance within the specified parameter ranges to ensure functional interchangeability in circuit applications.

Substiute Parts

AOTF292L

Alpha & Omega Semiconductor Inc.In Stock: 1209AOTF292L Datasheet

Current PartRFQ

FDPF045N10A

onsemiIn Stock: 6125FDPF045N10A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AOTF292L is determined by the following critical electrical and mechanical parameters:

Voltage Rating: Drain-to-source voltage (Vdss) must be 100V or greater to maintain voltage margin equivalence.

Current Rating: Continuous drain current (Id) at 25°C must be 67A or higher to ensure the substitute can handle the same or greater load conditions as the original 70A specification.

On-State Resistance: Rds On (Max) must not exceed 4.5 mOhm at the specified gate voltage to maintain equivalent switching losses and thermal performance.

Gate Threshold Voltage: Vgs(th) must remain within ±20V maximum gate voltage specification to ensure compatible gate drive circuitry.

Package Compatibility: The substitute must use TO-220-3 through-hole packaging to maintain mechanical and thermal interface compatibility.

Compliance: Both parts must maintain ROHS3 compliance and EAR99 export classification.

The FDPF045N10A from onsemi meets all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: FDPF045N10A (onsemi)

The FDPF045N10A is an Active product with ROHS3 compliance and REACH Unaffected status, matching the regulatory and compliance profile of the AOTF292L. Both devices share identical voltage ratings (100V Vdss), equivalent on-state resistance specifications (4.5 mOhm), and identical operating temperature ranges (-55°C to 175°C).

The FDPF045N10A operates at 67A continuous drain current, which is 3A lower than the AOTF292L's 70A rating. This difference is within acceptable substitution parameters for applications where the full 70A capability is not required. The substitute exhibits lower gate charge (74 nC versus 126 nC) and lower input capacitance (5270 pF versus 6775 pF), resulting in faster switching characteristics and reduced gate drive power requirements.

The power dissipation rating of the FDPF045N10A is 43W compared to 47W for the AOTF292L. Applications operating at maximum continuous current and thermal limits must account for this 4W reduction in rated dissipation.

Both devices use TO-220-3 through-hole packaging, ensuring mechanical and thermal interface compatibility without PCB layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the FDPF045N10A directly replace the AOTF292L in all applications?

A: The FDPF045N10A is electrically compatible for applications where continuous drain current does not exceed 67A. The 3A difference in current rating must be evaluated against actual circuit operating conditions. Both devices maintain identical voltage ratings, gate voltage specifications, and operating temperature ranges. Package compatibility is confirmed for TO-220-3 through-hole mounting.

Q: What is the significance of the lower gate charge in the FDPF045N10A?

A: The FDPF045N10A exhibits 74 nC gate charge compared to 126 nC in the AOTF292L. Lower gate charge reduces the energy required to switch the device and decreases gate drive circuit stress. This characteristic may improve overall circuit efficiency and reduce electromagnetic interference in high-frequency switching applications.

Q: How does the power dissipation difference affect thermal design?

A: The AOTF292L is rated for 47W maximum power dissipation while the FDPF045N10A is rated for 43W. In applications operating near maximum power dissipation limits, the substitute device may require enhanced thermal management or operate at lower junction temperatures. Thermal interface materials and heatsink specifications should be evaluated for the specific application.

Q: Are there any gate drive circuit modifications required when substituting the FDPF045N10A?

A: No modifications are required. Both devices accept ±20V maximum gate voltage and operate within compatible gate threshold voltage ranges (3.4V to 4.0V at 250µA). The lower input capacitance of the FDPF045N10A may reduce gate drive current requirements, but existing gate drive circuits designed for the AOTF292L will function correctly with the substitute.

Q: What compliance certifications apply to both devices?

A: Both the AOTF292L and FDPF045N10A are ROHS3 compliant, REACH Unaffected, and classified as EAR99 for export purposes. Regulatory and environmental compliance requirements are equivalent between the two devices.

Q: Is the TO-220-3 package identical between both devices?

A: Yes. Both devices use TO-220-3 full pack through-hole packaging. Pin configuration, mechanical dimensions, and thermal interface characteristics are compatible. No PCB layout modifications are required for substitution.