Equivalent & Substitute Parts for Infineon 64-2042 N-Channel MOSFET

Part Overview

The Infineon 64-2042 is an N-Channel MOSFET rated for 40V drain-to-source voltage with 75A continuous drain current in a TO-262 through-hole package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement. The part operates across a temperature range of -55°C to 175°C and delivers 220W maximum power dissipation at the case temperature. Substitution is required due to product discontinuation and limited inventory availability for new designs.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	40	V
Continuous Drain Current (Id) @ 25°C	75	A
On-State Resistance (Rds On) @ 75A, 10V	3.7	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Maximum Gate Voltage (Vgs)	±20	V
Power Dissipation (Max)	220	W
Operating Temperature Range	-55 to 175	°C
Mounting Type	Through Hole	—
Package	TO-262-3	—
RoHS Status	Non-compliant	—

Substitute Part Grouping Explanation

Substitution of the Infineon 64-2042 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Drain-to-Source Voltage (Vdss) must equal or exceed 40V
Continuous Drain Current (Id) must meet or exceed 75A at 25°C
Gate Threshold Voltage (Vgs(th)) must be compatible with 4V @ 250µA
Maximum Gate Voltage (Vgs) must support ±20V operation
Operating temperature range must span -55°C to 175°C

Mechanical Compatibility Requirements:

Mounting type must be Through Hole
Package must be compatible with TO-262-3 footprint

Compliance Considerations:

RoHS compliance status affects suitability for regulated applications
Product status (Active vs. Obsolete) influences long-term availability

The substitute parts listed below satisfy the electrical and mechanical requirements for direct substitution in applications designed for the 64-2042.

Parameter Comparison

Parameter	64-2042 (Infineon)	IPI80N04S403AKSA1 (Infineon)	STI270N4F3 (STMicroelectronics)
FET Type	N-Channel	N-Channel	N-Channel
Vdss	40 V	40 V	40 V
Id @ 25°C	75 A	80 A	160 A
Rds On (Max) @ 10V	3.7 mOhm @ 75A	3.7 mOhm @ 80A	2.6 mOhm @ 80A
Vgs(th) @ 250µA	4 V	4 V	4 V
Vgs (Max)	±20 V	±20 V	±20 V
Gate Charge (Qg) @ 10V	150 nC	66 nC	150 nC
Power Dissipation (Max)	220 W	94 W	330 W
Operating Temperature	-55 to 175 °C	-55 to 175 °C	-55 to 175 °C
Mounting Type	Through Hole	Through Hole	Through Hole
Package	TO-262-3	PG-TO262-3	I2PAK
Product Status	Obsolete	Active	Obsolete
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

IPI80N04S403AKSA1 (Infineon Technologies)

This part is the manufacturer-recommended substitute. It meets all electrical requirements with equivalent Rds On performance (3.7 mOhm @ 10V) and identical gate threshold voltage (4V @ 250µA). The continuous drain current rating of 80A exceeds the 75A requirement of the original part. The IPI80N04S403AKSA1 is classified as Active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance makes this part suitable for regulated applications. The PG-TO262-3 package is footprint-compatible with the original TO-262-3. Gate charge is reduced to 66 nC, providing improved switching performance. Power dissipation is rated at 94W, which is lower than the original 220W specification but remains adequate for applications within the 75A continuous current envelope.

STI270N4F3 (STMicroelectronics)

This part provides superior electrical performance with a continuous drain current rating of 160A and reduced on-state resistance of 2.6 mOhm @ 80A. Power dissipation capability is increased to 330W, supporting higher thermal loads. The STI270N4F3 carries AEC-Q101 automotive qualification and ROHS3 compliance. However, this part is classified as Obsolete product status, which may limit future availability. The I2PAK package differs from the original TO-262-3 footprint and requires PCB layout verification for mechanical compatibility. Gate charge remains at 150 nC, matching the original specification. This part is suitable for applications requiring higher current capacity and thermal performance than the original design.

Frequently Asked Questions (FAQ)

Q: Can the IPI80N04S403AKSA1 be used as a direct replacement for the 64-2042?

A: Yes. The IPI80N04S403AKSA1 meets all electrical specifications of the 64-2042, including Vdss (40V), gate threshold voltage (4V @ 250µA), and maximum gate voltage (±20V). The continuous drain current rating of 80A exceeds the 75A requirement. The PG-TO262-3 package is footprint-compatible with the original TO-262-3. This is the manufacturer-recommended substitute.

Q: What is the difference between the TO-262-3 and I2PAK packages?

A: Both packages are through-hole configurations with three leads, but they have different physical dimensions and pin spacing. The TO-262-3 (also called TO-262AA) and I2PAK are not mechanically interchangeable without PCB layout modification. Verify footprint compatibility before selecting the STI270N4F3.

Q: Does the reduced power dissipation of the IPI80N04S403AKSA1 (94W vs. 220W) affect circuit performance?

A: Power dissipation rating indicates the maximum thermal load the device can handle at the case temperature. The IPI80N04S403AKSA1 is rated for 94W at Tc, which is adequate for applications operating at or below the original 75A continuous current specification. If your application requires sustained operation above 75A, verify that thermal management remains within the 94W limit.

Q: Is the STI270N4F3 suitable for my application if I need higher current capacity?

A: The STI270N4F3 supports 160A continuous drain current and 330W power dissipation, providing significant performance headroom. However, this part is classified as Obsolete, which may restrict future procurement. Verify package compatibility (I2PAK vs. TO-262-3) and confirm that the increased electrical performance aligns with your circuit requirements before selection.

Q: What is the significance of RoHS compliance for substitute part selection?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances regulations, which is mandatory for many regulated markets and applications. The IPI80N04S403AKSA1 and STI270N4F3 are both ROHS3 compliant, making them suitable for applications with regulatory requirements. The original 64-2042 is RoHS non-compliant and may not be acceptable for new designs in regulated industries.

Q: How does gate charge affect switching performance?

A: Gate charge (Qg) determines the amount of charge required to switch the FET on or off. The IPI80N04S403AKSA1 has a gate charge of 66 nC @ 10V, compared to 150 nC for the original 64-2042. Lower gate charge enables faster switching transitions and reduced switching losses, improving overall circuit efficiency. The STI270N4F3 maintains 150 nC gate charge, matching the original specification.

Q: Can I use the STI270N4F3 in a design originally specified for the 64-2042?

A: Electrical compatibility is confirmed; however, mechanical compatibility must be verified. The STI270N4F3 uses an I2PAK package, which differs from the original TO-262-3 footprint. PCB layout modification is required. Additionally, the STI270N4F3 is classified as Obsolete, which may limit long-term availability. For new designs, the IPI80N04S403AKSA1 is the preferred substitute.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message