AOD498 N-Channel MOSFET 100V 2.5A/11A TO-252 Equivalent & Substitute Parts

Part Overview

The AOD498 is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 100V drain-to-source voltage with continuous drain current of 2.5A at Ta and 11A at Tc. The device is housed in a TO-252 (DPAK) surface mount package and is designed for general-purpose switching and amplification applications.

The AOD498 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current handling capability, on-resistance characteristics, and thermal performance while preserving mechanical compatibility with the TO-252 package footprint.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	100	V
Continuous Drain Current @ 25°C (Ta)	2.5	A
Continuous Drain Current @ 25°C (Tc)	11	A
Rds On (Max) @ Id, Vgs	140 mOhm @ 4.5A, 10V	—
Gate Threshold Voltage Vgs(th) (Max) @ Id	2.3	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	14	nC @ 10V
Input Capacitance (Ciss) (Max) @ Vds	415	pF @ 50V
Power Dissipation (Max) @ Ta	2.1	W
Power Dissipation (Max) @ Tc	45	W
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Vgs (Max)	±20	V

Substitute Part Grouping Explanation

Substitute parts for the AOD498 are selected based on strict electrical and mechanical compatibility criteria. All substitute candidates must satisfy the following requirements:

Mandatory Compatibility Parameters:

Drain to Source Voltage (Vdss): Equal to or greater than 100V
FET Type: N-Channel MOSFET (Metal Oxide technology)
Package: TO-252 (DPAK) surface mount configuration
Operating Temperature Range: Minimum -55°C to 175°C (TJ)
Gate Voltage Rating (Vgs Max): ±16V or greater

Electrical Performance Criteria:

Continuous drain current capability must support the application requirements
On-resistance (Rds On) characteristics must be compatible with switching performance
Gate charge and input capacitance must be within acceptable operating parameters
Power dissipation capability must meet thermal design requirements

Substitute parts are grouped into two categories based on current handling capability and thermal performance relative to the AOD498:

Category 1 - Direct Replacement (Similar Current Rating): AOD2922 and FDD86113LZ provide comparable continuous drain current ratings and on-resistance characteristics suitable for applications requiring performance similar to the AOD498.

Category 2 - Higher Performance Alternative (Enhanced Current Rating): IRLR3410TRLPBF and AUIRLR3410TR offer significantly higher continuous drain current (17A at Tc) and lower on-resistance, suitable for applications requiring enhanced current handling and thermal performance.

Parameter Comparison

Parameter	AOD498	AOD2922	FDD86113LZ	IRLR3410TRLPBF	AUIRLR3410TR
Manufacturer	Alpha & Omega Semiconductor Inc.	Alpha & Omega Semiconductor Inc.	onsemi	Infineon Technologies	International Rectifier
Product Status	Obsolete	Active	Active	Active	Active
Vdss (V)	100	100	100	100	100
Id @ 25°C Ta (A)	2.5	3.5	4.2	—	—
Id @ 25°C Tc (A)	11	7	5.5	17	17
Rds On (Max) @ Id, Vgs (mOhm)	140 @ 4.5A, 10V	140 @ 5A, 10V	104 @ 4.2A, 10V	105 @ 10A, 10V	105 @ 10A, 10V
Vgs(th) (Max) @ Id (V)	2.3 @ 250µA	2.7 @ 250µA	3 @ 250µA	2 @ 250µA	2 @ 250µA
Gate Charge Qg (Max) @ Vgs (nC)	14 @ 10V	10 @ 10V	6 @ 10V	34 @ 5V	34 @ 5V
Input Capacitance Ciss (Max) @ Vds (pF)	415 @ 50V	310 @ 50V	285 @ 50V	800 @ 25V	800 @ 25V
Power Dissipation (Max) @ Ta (W)	2.1	5	3.1	—	—
Power Dissipation (Max) @ Tc (W)	45	17	29	79	79
Operating Temperature Range (°C)	-55 to 175	-55 to 175	-55 to 150	-55 to 175	-55 to 175
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Vgs (Max) (V)	±20	±20	±20	±16	±16
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

AOD2922 (Alpha & Omega Semiconductor Inc.)

The AOD2922 is an active product from the same manufacturer as the AOD498, providing direct design continuity. It maintains the same 100V voltage rating and TO-252 package configuration. The AOD2922 offers higher continuous drain current at Ta (3.5A versus 2.5A) and comparable on-resistance characteristics. This part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), supporting modern manufacturing and environmental compliance requirements. The AOD2922 is suitable for applications where the AOD498 was used and where current requirements do not exceed 7A at Tc.

FDD86113LZ (onsemi)

The FDD86113LZ is an active product from onsemi, featuring the PowerTrench® technology platform. It maintains 100V voltage rating and TO-252 package compatibility. The FDD86113LZ provides improved on-resistance (104 mOhm versus 140 mOhm) and lower gate charge (6 nC versus 14 nC), resulting in reduced switching losses. This part is ROHS3 compliant with unlimited MSL rating. The operating temperature range extends to 150°C (versus 175°C for the AOD498), which is acceptable for most applications. The FDD86113LZ is suitable for applications requiring improved efficiency and lower switching losses.

IRLR3410TRLPBF (Infineon Technologies)

The IRLR3410TRLPBF is an active product from Infineon Technologies, part of the HEXFET® series. It maintains 100V voltage rating and TO-252 package compatibility. This part provides significantly higher continuous drain current (17A at Tc) and substantially higher power dissipation capability (79W at Tc versus 45W for the AOD498). The IRLR3410TRLPBF is ROHS3 compliant with unlimited MSL rating and supports the full -55°C to 175°C operating temperature range. This part is suitable for applications requiring enhanced current handling and thermal performance beyond the AOD498 specifications.

AUIRLR3410TR (International Rectifier)

The AUIRLR3410TR is an active product from International Rectifier, designated for automotive applications within the HEXFET® series. It maintains 100V voltage rating and TO-252 package compatibility. This part provides the same high continuous drain current (17A at Tc) and power dissipation capability (79W at Tc) as the IRLR3410TRLPBF. The AUIRLR3410TR supports the full -55°C to 175°C operating temperature range. This part is suitable for applications requiring enhanced current handling and thermal performance, particularly in automotive environments.

Frequently Asked Questions (FAQ)

Q: Can the AOD2922 be used as a direct replacement for the AOD498?

A: The AOD2922 is electrically and mechanically compatible with the AOD498. Both devices share the same 100V voltage rating, TO-252 package configuration, and operating temperature range. The AOD2922 offers higher continuous drain current capability and is an active product with current manufacturing support. Substitution is appropriate for applications where the current requirements do not exceed the AOD2922 specifications.

Q: What is the primary difference between the FDD86113LZ and the AOD2922?

A: The FDD86113LZ features lower on-resistance (104 mOhm versus 140 mOhm) and significantly lower gate charge (6 nC versus 10 nC), resulting in reduced switching losses and improved efficiency. The FDD86113LZ is manufactured by onsemi using PowerTrench® technology. Both parts maintain 100V voltage rating and TO-252 package compatibility. The FDD86113LZ operating temperature range extends to 150°C, which is acceptable for most applications.

Q: When should the IRLR3410TRLPBF or AUIRLR3410TR be selected instead of the AOD2922 or FDD86113LZ?

A: The IRLR3410TRLPBF and AUIRLR3410TR should be selected when applications require continuous drain current exceeding 7A at Tc or when higher power dissipation capability is necessary. These parts provide 17A continuous drain current and 79W power dissipation at Tc, compared to 7A and 17W for the AOD2922. The higher current and thermal performance make these parts suitable for high-power switching applications.

Q: Are all substitute parts ROHS3 compliant?

A: The AOD2922, FDD86113LZ, and IRLR3410TRLPBF are explicitly ROHS3 compliant. The AUIRLR3410TR does not specify RoHS status in the provided data. Compliance verification with the AUIRLR3410TR manufacturer is recommended for applications with specific environmental or regulatory requirements.

Q: Do all substitute parts support the same operating temperature range as the AOD498?

A: The AOD498, AOD2922, IRLR3410TRLPBF, and AUIRLR3410TR all support -55°C to 175°C operating temperature range. The FDD86113LZ supports -55°C to 150°C, which is acceptable for most applications but does not extend to the full 175°C upper limit.

Q: Are the substitute parts available in the same packaging options as the AOD498?

A: All substitute parts are available in TO-252 (DPAK) surface mount package configuration, maintaining mechanical compatibility with the AOD498 footprint. The AOD498 was supplied in Tape & Reel (TR) packaging. The AOD2922 is available in Tape & Reel (TR). The FDD86113LZ and IRLR3410TRLPBF are available in Cut Tape (CT) & Digi-Reel® packaging. The AUIRLR3410TR is available in Bulk packaging. Packaging format selection depends on manufacturing and supply chain requirements.

Q: What is the significance of gate charge (Qg) differences between the substitute parts?

A: Gate charge affects switching speed and drive circuit requirements. The AOD498 has 14 nC gate charge at 10V. The AOD2922 has 10 nC, and the FDD86113LZ has 6 nC, both resulting in faster switching characteristics. The IRLR3410TRLPBF and AUIRLR3410TR have 34 nC gate charge at 5V, indicating higher gate charge but measured at lower voltage. Lower gate charge reduces switching losses and allows faster switching frequencies in appropriate drive circuits.

Q: How do on-resistance differences impact application performance?

A: On-resistance (Rds On) directly affects conduction losses and heat generation. The AOD498 has 140 mOhm on-resistance. The FDD86113LZ has 104 mOhm, providing approximately 26% lower conduction losses. The IRLR3410TRLPBF and AUIRLR3410TR have 105 mOhm on-resistance, providing similar loss reduction. Lower on-resistance reduces power dissipation and improves efficiency, particularly in high-current applications.

Q: Can the substitute parts be used in existing PCB designs without layout modifications?

A: All substitute parts use the TO-252 (DPAK) package with identical pin configuration and footprint dimensions. PCB layout modifications are not required for mechanical compatibility. However, thermal design considerations may differ due to varying power dissipation capabilities. Applications using higher-current substitute parts (IRLR3410TRLPBF or AUIRLR3410TR) may benefit from enhanced thermal management design.

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