AOT292L N-Channel MOSFET 100V 105A TO-220 Equivalent & Substitute Parts

Part Overview

The AOT292L is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 100V drain-to-source voltage with 105A continuous drain current (Tc) in a TO-220 through-hole package. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. The part is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1) and operates across a temperature range of -55°C to 175°C.

Due to its obsolete product status, equivalent and substitute parts are necessary for ongoing production support, maintenance applications, and new design implementations requiring similar electrical and mechanical characteristics.

Key Parameters

Parameter	AOT292L Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current @ 25°C (Tc)	105	A
RDS(on) Max @ 20A, 10V	4.5	mOhm
Gate-Source Voltage (Vgs) Max	±20	V
Gate Threshold Voltage @ 250µA	3.4	V
Gate Charge @ 10V	126	nC
Input Capacitance @ 50V	6775	pF
Power Dissipation (Tc)	300	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-220-3	Through Hole
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the AOT292L is determined by the following critical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 100V
Continuous Drain Current (Tc): Must equal or exceed 105A
Package Type: TO-220 or TO-220-3 through-hole configuration
Gate-Source Voltage Rating (Vgs): Must support ±20V
Operating Temperature Range: Must encompass -55°C to 175°C minimum
RDS(on) characteristics: Lower or equivalent on-resistance preferred for thermal performance
Compliance: ROHS3 compliance required

Secondary Compatibility Factors:

Gate Charge (Qg): Lower values reduce switching losses
Input Capacitance (Ciss): Lower values improve switching speed
Power Dissipation capability: Higher ratings provide thermal margin

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (100V, 100A+): Parts meeting or exceeding the AOT292L electrical specifications with matching voltage and current ratings.

Category B - Functional Alternatives (80V-100V, 75A-120A): Parts with slightly reduced voltage or current ratings suitable for applications with lower stress requirements, or enhanced current ratings for higher-performance applications.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ Tc (A)	RDS(on) Max (mOhm)	Qg @ 10V (nC)	Ciss @ Vds (pF)	Pd (Tc) (W)	Tj Range (°C)	Package	Status
AOT292L	Alpha & Omega	100	105	4.5 @ 20A, 10V	126	6775 @ 50V	300	-55 to 175	TO-220-3	Not For New Designs
AOT66916L	Alpha & Omega	100	120	3.6 @ 20A, 10V	78	6180 @ 50V	277	-55 to 150	TO-220-3	Active
FDP045N10A-F102	onsemi	100	120	4.5 @ 100A, 10V	74	5270 @ 50V	263	-55 to 175	TO-220-3	Active
FDP047N10	onsemi	100	120	4.7 @ 75A, 10V	210	15265 @ 25V	375	-55 to 175	TO-220-3	Active
FDP054N10	onsemi	100	120	5.5 @ 75A, 10V	203	13280 @ 25V	263	-55 to 175	TO-220-3	Active
FDP039N08B-F102	Fairchild	80	120	3.9 @ 100A, 10V	133	9450 @ 40V	214	-55 to 175	TO-220-3	Active
FDP053N08B-F102	onsemi	80	75	5.3 @ 75A, 10V	85	5960 @ 40V	146	-55 to 175	TO-220-3	Active
FDPF045N10A	onsemi	100	67	4.5 @ 67A, 10V	74	5270 @ 50V	43	-55 to 175	TO-220F-3	Active
IPP045N10N3GXKSA1	Infineon	100	100	4.5 @ 100A, 10V	117	8410 @ 50V	214	-55 to 175	TO-220-3	Active
IPP120N08S404AKSA1	Infineon	80	120	4.4 @ 100A, 10V	95	6450 @ 25V	179	-55 to 175	TO-220-3	Obsolete
IRF100B201	Infineon	100	192	4.2 @ 115A, 10V	255	9500 @ 50V	441	-55 to 175	TO-220-3	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement:

The AOT66916L from Alpha & Omega Semiconductor Inc. is the preferred direct substitute. It maintains 100V Vdss rating, exceeds the 105A continuous drain current requirement with 120A (Tc), and is in Active product status. The AOT66916L features improved RDS(on) of 3.6mOhm compared to the AOT292L's 4.5mOhm, resulting in lower conduction losses. Both parts are ROHS3 compliant with identical ±20V gate voltage ratings and TO-220-3 packaging. The AOT66916L operates to 150°C maximum junction temperature, which is 25°C lower than the AOT292L but remains suitable for most applications within the -55°C to 150°C range.

Secondary Recommendations - onsemi PowerTrench® Series:

The FDP045N10A-F102 provides exact electrical equivalence at 100V, 120A with matching RDS(on) of 4.5mOhm and full -55°C to 175°C operating range. This part is in Active status with ROHS3 compliance and TO-220-3 packaging.

The FDP047N10 offers enhanced power dissipation capability (375W Tc) with 100V, 120A ratings and -55°C to 175°C operation, suitable for high-thermal-stress applications.

The FDP054N10 provides 100V, 120A operation with -55°C to 175°C range and Active status, though with slightly higher RDS(on) of 5.5mOhm.

Alternative for Lower Voltage Applications:

The FDP039N08B-F102 (Fairchild PowerTrench®) operates at 80V with 120A continuous current, suitable for applications where 100V rating is not required. It features low RDS(on) of 3.9mOhm and -55°C to 175°C operation.

High-Current Alternative:

The IRF100B201 (Infineon HEXFET®) supports 192A continuous drain current at 100V, providing significant current margin for demanding applications. It maintains -55°C to 175°C operation and ROHS3 compliance, though with higher gate charge (255nC) and input capacitance (9500pF).

Infineon OptiMOS™ Option:

The IPP045N10N3GXKSA1 delivers 100V, 100A operation with -55°C to 175°C range and Active status. It provides equivalent RDS(on) performance with lower gate charge (117nC) compared to the AOT292L, improving switching efficiency.

Parts to Avoid:

The IPP120N08S404AKSA1 is classified as Obsolete and should not be selected for new applications despite meeting electrical requirements.

The FDPF045N10A uses TO-220F-3 packaging (full pack variant) and supports only 67A continuous current, making it unsuitable as a direct replacement for 105A applications.

The FDP053N08B-F102 is limited to 75A continuous current and 80V rating, insufficient for full AOT292L specification replacement.

Frequently Asked Questions (FAQ)

Q: Can the AOT292L be directly replaced with the AOT66916L?

A: Yes. Both parts share identical 100V Vdss rating, TO-220-3 packaging, ±20V gate voltage specification, and ROHS3 compliance. The AOT66916L exceeds the 105A continuous current requirement with 120A (Tc) and features improved RDS(on) characteristics. The primary difference is the maximum junction temperature: AOT66916L operates to 150°C versus AOT292L's 175°C. For applications operating below 150°C, the AOT66916L is a direct functional replacement.

Q: What is the significance of RDS(on) differences between substitute parts?

A: RDS(on) (on-resistance) directly affects conduction losses and heat generation. Lower RDS(on) values reduce power dissipation during operation. The AOT292L specifies 4.5mOhm at 20A, 10V. The AOT66916L's 3.6mOhm provides approximately 20% lower conduction losses. The FDP045N10A-F102 matches the AOT292L at 4.5mOhm but measured at 100A, indicating consistent performance across the current range. Higher RDS(on) values (such as FDP054N10 at 5.5mOhm) increase thermal load and may require enhanced cooling in high-current applications.

Q: Why do some substitute parts have lower voltage ratings (80V vs. 100V)?

A: Parts rated at 80V Vdss (such as FDP039N08B-F102 and FDP053N08B-F102) are suitable only for applications where the maximum drain-source voltage does not exceed 80V. The AOT292L's 100V rating provides margin for transient overvoltages and switching spikes. Selecting an 80V part for a 100V application risks device failure. Use 80V alternatives only when application voltage stress is confirmed to remain below 80V.

Q: What does "Not For New Designs" status mean for the AOT292L?

A: This designation indicates the part has reached end-of-life and the manufacturer no longer recommends its use in new product designs. Existing inventory may remain available for a limited period, but long-term supply is not guaranteed. New designs should transition to Active-status alternatives such as AOT66916L, FDP045N10A-F102, or IPP045N10N3GXKSA1 to ensure sustained component availability and manufacturer support.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts listed carry ROHS3 compliance certification, matching the AOT292L's environmental compliance status. This ensures compatibility with regulatory requirements for restricted substances in electrical and electronic equipment.

Q: What is the difference between TO-220-3 and TO-220F-3 packaging?

A: TO-220-3 is the standard through-hole package with three leads (Gate, Drain, Source). TO-220F-3 (full pack) is a variant with the same electrical function but different mechanical dimensions and mounting characteristics. The FDPF045N10A uses TO-220F-3 packaging and is not mechanically interchangeable with standard TO-220-3 footprints without PCB redesign. Verify PCB footprint compatibility before selecting TO-220F variants.

Q: How does gate charge (Qg) affect circuit performance?

A: Gate charge represents the total charge required to switch the MOSFET from off to on state. Higher Qg values (such as IRF100B201 at 255nC) require more gate drive current and increase switching time, potentially reducing switching frequency capability and increasing switching losses. Lower Qg values (such as AOT66916L at 78nC and FDP045N10A-F102 at 74nC) enable faster switching and reduced losses, beneficial for high-frequency applications. The AOT292L's 126nC is moderate; substitutes with lower Qg improve efficiency.

Q: Can the IRF100B201 be used as a direct replacement despite its 192A rating?

A: The IRF100B201 is electrically compatible with 100V Vdss and -55°C to 175°C operation, but its 192A continuous current rating significantly exceeds the AOT292L's 105A requirement. This part is suitable for applications requiring higher current capacity or thermal margin. However, its higher gate charge (255nC) and input capacitance (9500pF) may require gate drive circuit adjustments. Use the IRF100B201 when enhanced current capability is beneficial; it is not necessary for applications requiring only 105A.

Q: What compliance certifications should be verified for critical applications?

A: All listed substitute parts carry ROHS3 compliance and REACH Unaffected status, matching the AOT292L. The IPP120N08S404AKSA1 includes AEC-Q101 automotive qualification, suitable for automotive-grade applications. For non-automotive applications, standard ROHS3 compliance is sufficient. Verify specific application requirements (industrial, automotive, medical) and select parts with corresponding certifications.

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