AOD464 N-Channel MOSFET 105V 40A TO-252 Equivalent & Substitute Parts

Part Overview

The AOD464 is an N-Channel enhancement-mode MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 105V drain-to-source voltage with 40A continuous drain current in a surface-mount TO-252 (DPAK) package. This device is designed for high-current switching applications requiring efficient power dissipation and compact form factor. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching or exceeding critical electrical parameters within the same package family, enabling direct replacement in circuit designs where voltage and current ratings permit functional equivalence.

Key Parameters

Parameter	AOD464 Specification	Unit
Drain-to-Source Voltage (Vdss)	105	V
Continuous Drain Current (Id) @ 25°C	40	A (Tc)
On-State Resistance (Rds On) @ 20A, 10V	28	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	46	nC
Input Capacitance (Ciss) @ 25V	2445	pF
Power Dissipation (Tc)	100	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252 (DPAK)	Surface Mount
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the AOD464 is determined by the following critical parameters:

Voltage Rating Compatibility: Substitute parts must maintain a Vdss rating of 100V or higher to ensure safe operation within the AOD464's 105V specification envelope.

Current Rating Compatibility: Substitute parts must support continuous drain current (Id) of 35A or greater at rated conditions to maintain functional equivalence for 40A applications.

On-State Resistance (Rds On): Substitute parts must exhibit Rds On values at or below 28mOhm (measured at comparable current and gate voltage conditions) to ensure thermal performance and power dissipation characteristics remain within acceptable limits.

Package Compatibility: All substitute parts must use TO-252 (DPAK) surface-mount packaging to ensure mechanical and electrical compatibility with existing PCB layouts.

Gate Threshold Voltage: Substitute parts must maintain Vgs(th) at or below 4V to ensure compatible gate drive requirements.

Compliance Requirements: All substitute parts must maintain RoHS3 compliance and MSL 1 rating to meet regulatory and manufacturing process requirements.

Substitute parts are grouped into two categories: Primary Equivalents (100V rated, 34A–44A current range) and Secondary Equivalents (80V–100V rated, 30A–36A current range). Primary equivalents provide direct functional replacement with minimal design impact. Secondary equivalents require design review to confirm voltage margin adequacy for specific applications.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Ciss (pF)	Pd Tc (W)	Tj Range (°C)
AOD464	Alpha & Omega Semiconductor	105	40 (Tc)	28 @ 20A, 10V	4 @ 250µA	46 @ 10V	2445 @ 25V	100	-55 to 175
FDD3670	onsemi	100	34 (Ta)	32 @ 7.3A, 10V	4 @ 250µA	80 @ 10V	2490 @ 50V	83	-55 to 175
FDD3672	onsemi	100	44 (Tc)	28 @ 44A, 10V	4 @ 250µA	36 @ 10V	1710 @ 25V	135	-55 to 175
FDD86102	onsemi	100	36 (Tc)	24 @ 8A, 10V	4 @ 250µA	19 @ 10V	1035 @ 50V	62	-55 to 150
IRFR3411TRPBF	Infineon Technologies	100	32 (Tc)	44 @ 16A, 10V	4 @ 250µA	71 @ 10V	1960 @ 25V	130	-55 to 175
IRFR540ZTRLPBF	Infineon Technologies	100	35 (Tc)	28.5 @ 21A, 10V	4 @ 50µA	59 @ 10V	1690 @ 25V	91	-55 to 175
IRLR2908TRPBF	Infineon Technologies	80	30 (Tc)	28 @ 23A, 10V	2.5 @ 250µA	33 @ 4.5V	1890 @ 25V	120	-55 to 175
PJD50N10AL_L2_00001	Panjit International Inc.	100	42 (Tc)	25 @ 20A, 10V	2.5 @ 250µA	29 @ 10V	1485 @ 30V	83	-55 to 150
STD15NF10T4	STMicroelectronics	100	23 (Tc)	65 @ 12A, 10V	4 @ 250µA	40 @ 10V	870 @ 25V	70	-55 to 175
SUD35N10-26P-E3	Vishay Siliconix	100	35 (Tc)	26 @ 12A, 10V	4.4 @ 250µA	47 @ 10V	2000 @ 12V	83	-55 to 175

Engineering Selection Recommendations

Primary Equivalent Selection (100V Rated, 34A–44A Current Range)

FDD3672, IRFR540ZTRLPBF, PJD50N10AL_L2_00001, and SUD35N10-26P-E3 are classified as primary equivalents. These parts maintain 100V Vdss rating with continuous drain current ratings of 35A or greater, ensuring direct functional replacement capability. All four parts are RoHS3 compliant with MSL 1 rating and operating temperature ranges spanning -55°C to 175°C (except PJD50N10AL_L2_00001, which extends to 150°C). FDD3672 and PJD50N10AL_L2_00001 exhibit superior on-state resistance characteristics (28mOhm and 25mOhm respectively) compared to the AOD464 baseline. IRFR540ZTRLPBF and SUD35N10-26P-E3 provide comparable Rds On performance with established supply chain availability. All primary equivalents maintain gate threshold voltage at or below 4V, ensuring compatible gate drive circuits.

Secondary Equivalent Selection (100V Rated, 30A–36A Current Range)

FDD3670, FDD86102, IRFR3411TRPBF, and STD15NF10T4 are classified as secondary equivalents. These parts maintain 100V Vdss rating but exhibit continuous drain current ratings below 40A. FDD3670 and FDD86102 are onsemi PowerTrench and PowerTrench series devices respectively, with RoHS3 compliance and MSL 1 rating. IRFR3411TRPBF is an Infineon HEXFET series device rated for 32A continuous current with 130W power dissipation capability. STD15NF10T4 is an STMicroelectronics STripFET II series device rated for 23A continuous current, representing the lowest current rating among secondary equivalents. Secondary equivalents require design review to confirm current margin adequacy for specific applications exceeding 36A continuous operation.

Lower Voltage Alternative (80V Rated)

IRLR2908TRPBF is an Infineon HEXFET series device rated for 80V Vdss with 30A continuous drain current. This part exhibits superior on-state resistance (28mOhm) and lower gate charge (33nC) compared to the AOD464. However, the 80V voltage rating represents a 25V reduction from the AOD464 specification. This part is suitable only for applications where the maximum operating voltage does not exceed 80V and where the 30A current rating provides adequate margin. IRLR2908TRPBF maintains RoHS3 compliance, MSL 1 rating, and -55°C to 175°C operating temperature range.

Compliance and Regulatory Status

All recommended substitute parts maintain RoHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage requirements. All parts are classified as Active products with established supply chain availability. SUD35N10-26P-E3 is noted as REACH Affected; design teams must verify REACH compliance requirements for specific end-use applications and geographic markets.

Frequently Asked Questions (FAQ)

Q: Can FDD3670 directly replace AOD464 in all applications?

A: FDD3670 is a primary equivalent with 100V Vdss rating and 34A continuous current capability. Direct replacement is suitable for applications where continuous drain current does not exceed 34A. Applications requiring the full 40A rating of the AOD464 require design review or selection of higher-current alternatives such as FDD3672 or PJD50N10AL_L2_00001.

Q: What is the significance of the Rds On parameter in substitute selection?

A: On-state resistance (Rds On) directly determines power dissipation and thermal performance. The AOD464 specifies 28mOhm at 20A and 10V gate voltage. Substitute parts with equal or lower Rds On values (such as FDD3672 at 28mOhm, PJD50N10AL_L2_00001 at 25mOhm, and SUD35N10-26P-E3 at 26mOhm) provide equivalent or superior thermal characteristics. Parts with higher Rds On values (such as IRFR3411TRPBF at 44mOhm) generate increased heat and require thermal design verification.

Q: Why is IRLR2908TRPBF listed as a substitute if it has only 80V rating?

A: IRLR2908TRPBF is included as a secondary equivalent for applications where the maximum operating voltage does not exceed 80V. The 25V voltage margin reduction from the AOD464 specification (105V) limits its applicability to lower-voltage designs. This part offers superior on-state resistance and lower gate charge, making it suitable for specific high-efficiency, lower-voltage switching applications.

Q: Are all substitute parts available in the same TO-252 package?

A: Yes. All substitute parts listed are manufactured in TO-252 (DPAK) surface-mount packaging with identical mechanical dimensions and pinout configuration. This ensures direct PCB layout compatibility without redesign. Specific package variants (such as TO-252AA) are noted in detailed specifications but do not affect mechanical interchangeability.

Q: What is the impact of gate charge (Qg) differences on circuit design?

A: Gate charge determines the energy required to switch the MOSFET on and off. The AOD464 specifies 46nC at 10V. Substitute parts with lower gate charge (such as FDD86102 at 19nC or PJD50N10AL_L2_00001 at 29nC) reduce gate drive power requirements and enable faster switching transitions. Parts with higher gate charge (such as IRFR3411TRPBF at 71nC) require higher gate drive current or longer switching times. Gate drive circuit design must accommodate the selected substitute's gate charge specification.

Q: Can STD15NF10T4 replace AOD464 in high-current applications?

A: STD15NF10T4 is rated for 23A continuous drain current, significantly below the AOD464's 40A specification. This part is suitable only for applications where continuous current does not exceed 23A. Additionally, STD15NF10T4 exhibits higher on-state resistance (65mOhm at 12A, 10V) compared to the AOD464 (28mOhm at 20A, 10V), resulting in increased power dissipation. This part is not recommended as a direct replacement for 40A applications.

Q: What compliance certifications should be verified before selecting a substitute?

A: All listed substitute parts maintain RoHS3 compliance and MSL 1 moisture sensitivity rating, matching the AOD464 specification. SUD35N10-26P-E3 is noted as REACH Affected, requiring verification of REACH compliance status for specific end-use applications and geographic markets. Design teams must confirm that selected substitutes meet all applicable regulatory requirements for their target applications and regions.

Q: How do operating temperature ranges affect substitute selection?

A: The AOD464 operates from -55°C to 175°C (TJ). Most substitute parts maintain this full temperature range. FDD3670, FDD86102, and PJD50N10AL_L2_00001 operate to 150°C maximum junction temperature, representing a 25°C reduction. Applications requiring operation above 150°C require selection of parts with extended temperature ratings (such as FDD3672, IRFR540ZTRLPBF, IRFR3411TRPBF, IRLR2908TRPBF, STD15NF10T4, or SUD35N10-26P-E3).

Q: What is the difference between Ta and Tc current ratings?

A: Ta (ambient temperature) and Tc (case temperature) represent different measurement conditions. Ta ratings reflect continuous current capability at 25°C ambient temperature without active cooling. Tc ratings reflect continuous current capability at the device case temperature, typically used for thermal design calculations. The AOD464 specifies 40A at Tc. Substitute parts may specify current at either Ta or Tc; design teams must use consistent measurement conditions when comparing current ratings across different parts.

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