IXTP270N04T4 N-Channel MOSFET 40V 270A Equivalent & Substitute Parts

Part Overview

The IXTP270N04T4 is an N-Channel MOSFET manufactured by IXYS, rated for 40V drain-to-source voltage with 270A continuous drain current at 25°C. This device features a Trench technology design in a TO-220-3 through-hole package and is designated as Last Time Buy status. Alternative equivalent parts are necessary due to product lifecycle discontinuation, supply chain constraints, or application-specific performance requirements while maintaining electrical and mechanical compatibility within the 40V N-Channel MOSFET category.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	IXTP270N04T4	—
Manufacturer	IXYS	—
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	40	V
Continuous Drain Current (Id) @ 25°C	270	A
On-State Resistance (Rds On Max) @ 50A, 10V	2.4	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 250µA	4	V
Gate Charge (Qg Max) @ 10V	182	nC
Power Dissipation (Max)	375	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-220-3	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the IXTP270N04T4 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

FET Type: N-Channel (mandatory)
Drain-to-Source Voltage (Vdss): 40V (exact match required)
Package Type: TO-220-3 (mechanical compatibility)
Mounting Type: Through Hole (PCB assembly compatibility)
Operating Temperature Range: -55°C to 175°C (thermal envelope)
RoHS Compliance: ROHS3 Compliant (regulatory requirement)

Secondary Compatibility Parameters:

Continuous Drain Current (Id): Substitute must equal or exceed 270A to maintain current-handling capability
On-State Resistance (Rds On): Lower or equal values ensure equivalent or superior performance
Gate Threshold Voltage (Vgs(th)): Must fall within acceptable gate drive voltage range
Gate Charge (Qg): Lower values reduce switching losses; higher values acceptable if within application tolerance
Power Dissipation: Must support thermal requirements of the application

Substitute parts are grouped based on current rating capability relative to the main part's 270A specification. Parts with lower current ratings (90A to 195A) are classified as reduced-capacity alternatives suitable for applications with lower current demands.

Parameter Comparison

Parameter	IXTP270N04T4	AOT2142L	IPP023N04NGXKSA1	IRFB7437PBF	IRFB7440PBF
Manufacturer	IXYS	Alpha & Omega Semiconductor Inc.	Infineon Technologies	Infineon Technologies	Infineon Technologies
Vdss (V)	40	40	40	40	40
Id @ 25°C (A)	270	120	90	195	120
Rds On Max @ 10V (mOhm)	2.4 @ 50A	1.9 @ 20A	2.3 @ 90A	2.0 @ 100A	2.5 @ 100A
Vgs(th) Max (V)	4 @ 250µA	2.3 @ 250µA	4 @ 95µA	3.9 @ 150µA	3.9 @ 100µA
Qg Max @ 10V (nC)	182	100	120	225	135
Power Dissipation Max (W)	375	312	167	230	143
Operating Temperature (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Package	TO-220-3	TO-220-3	PG-TO220-3	TO-220AB	TO-220AB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active	Active

Engineering Selection Recommendations

Product Status Consideration: The IXTP270N04T4 carries Last Time Buy status, indicating end-of-life designation. All substitute parts listed maintain Active product status, ensuring long-term availability and continued manufacturer support.

Compliance & Certification: All substitute parts are ROHS3 Compliant and REACH Unaffected, matching the regulatory compliance profile of the main part. All devices operate within the -55°C to 175°C temperature range, maintaining thermal compatibility.

Current Rating Selection:

High Current Applications (≥195A): IRFB7437PBF (195A) provides the closest current-handling capability to the IXTP270N04T4 (270A) among available substitutes. This part is suitable for applications requiring sustained high current with acceptable power dissipation margins.
Medium Current Applications (120A): AOT2142L and IRFB7440PBF both provide 120A continuous drain current. AOT2142L offers lower on-state resistance (1.9 mOhm) and higher power dissipation capability (312W), making it preferable for lower-impedance switching applications.
Lower Current Applications (90A): IPP023N04NGXKSA1 (Infineon OptiMOS™ series) is suitable for applications with reduced current demands, offering optimized gate charge characteristics (120 nC) for efficient switching.

Package Compatibility: All substitute parts utilize TO-220 package variants (TO-220-3, TO-220AB, PG-TO220-3), ensuring mechanical and thermal interface compatibility with existing PCB designs. Pin configuration remains consistent across all listed alternatives.

Frequently Asked Questions (FAQ)

Q1: Can IRFB7437PBF directly replace IXTP270N04T4 in all applications?

IRFB7437PBF shares identical Vdss (40V) and operating temperature range (-55°C to 175°C) with IXTP270N04T4. However, its continuous drain current rating (195A) is lower than the main part (270A). Direct substitution is valid only for applications where the maximum required current does not exceed 195A. Thermal design must account for the reduced power dissipation capability (230W vs. 375W).

Q2: What is the difference between TO-220-3 and TO-220AB packaging?

Both TO-220-3 and TO-220AB are through-hole packages with identical pin configurations and thermal interface characteristics. The designation difference reflects manufacturer-specific nomenclature. All listed parts are mechanically compatible with existing TO-220 footprints on PCBs.

Q3: Why does AOT2142L have lower on-state resistance than IXTP270N04T4 despite lower current rating?

On-state resistance (Rds On) is a material and design characteristic independent of current rating. AOT2142L exhibits 1.9 mOhm at 20A compared to IXTP270N04T4's 2.4 mOhm at 50A. Lower Rds On reduces conduction losses in switching applications. Selection depends on application current requirements and thermal budget rather than Rds On alone.

Q4: Are all substitute parts suitable for high-frequency switching applications?

Gate charge (Qg) directly impacts switching speed and losses. IXTP270N04T4 has Qg of 182 nC. IPP023N04NGXKSA1 (120 nC) and AOT2142L (100 nC) offer lower gate charge, reducing switching losses in high-frequency applications. IRFB7437PBF (225 nC) has higher gate charge and may require higher gate drive current for equivalent switching speed.

Q5: Can I use a lower-current substitute in a 270A application?

No. Substituting a lower-current device (90A, 120A, or 195A) in an application requiring 270A continuous current will result in device failure due to thermal runaway and junction temperature exceeding maximum ratings. Current rating must equal or exceed application requirements.

Q6: Do all substitute parts meet the same regulatory requirements as IXTP270N04T4?

Yes. All listed substitute parts are ROHS3 Compliant and REACH Unaffected, matching the regulatory compliance of the main part. ECCN and HTSUS classifications are identical across all parts.

Q7: What is the impact of different gate threshold voltages on circuit design?

Gate threshold voltage (Vgs(th)) determines the minimum gate-source voltage required for device turn-on. IXTP270N04T4 and IPP023N04NGXKSA1 both specify 4V, while AOT2142L specifies 2.3V and IRFB7437PBF/IRFB7440PBF specify 3.9V. Lower threshold voltages enable operation with lower gate drive voltages. Gate drive circuits must be verified for compatibility with the selected substitute's Vgs(th) specification.

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