IXFH46N65X2 N-Channel 650V 46A MOSFET Equivalent & Substitute Parts

Part Overview

The IXFH46N65X2 is an N-Channel MOSFET manufactured by IXYS, rated for 650V drain-to-source voltage with 46A continuous drain current at 25°C. This device operates in the HiPerFET™ Ultra X2 series and is housed in a TO-247 through-hole package. The part is Active status and RoHS3 compliant. Substitute parts are identified when equivalent voltage and current ratings, package compatibility, and thermal characteristics align with application requirements, enabling component interchangeability in circuit designs where the original part becomes unavailable or inventory constraints necessitate alternative sourcing.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	650	V
Continuous Drain Current (Id) @ 25°C	46	A (Tc)
On-State Resistance (Rds On Max) @ Id, Vgs	76	mOhm @ 23A, 10V
Gate Threshold Voltage (Vgs(th) Max) @ Id	5.5	V @ 4mA
Gate Charge (Qg Max) @ Vgs	75	nC @ 10V
Power Dissipation (Max)	660	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-247-3	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the IXFH46N65X2 are selected based on the following critical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): 650V or higher
Continuous Drain Current (Id): 46A or higher at 25°C
Package Type: TO-247-3 through-hole configuration
Operating Temperature Range: Minimum -55°C to 150°C
Mounting Type: Through Hole
RoHS3 Compliance: Required

Secondary Compatibility Factors:

Gate drive voltage compatibility at 10V
On-state resistance characteristics
Gate charge and input capacitance within acceptable operating margins
Moisture Sensitivity Level MSL 1 (Unlimited)

The four substitute parts listed below meet these criteria with varying performance characteristics. Each substitute maintains the TO-247-3 package footprint and electrical interface compatibility while offering alternative current ratings, voltage ratings, or thermal performance profiles suitable for specific application requirements.

Parameter Comparison

Parameter	IXFH46N65X2	IPW60R070CFD7XKSA1	IPW60R080P7XKSA1	IPW65R080CFDAFKSA1	SPW55N80C3FKSA1
Manufacturer	IXYS	Infineon Technologies	Infineon Technologies	Infineon Technologies	Infineon Technologies
Vdss (V)	650	650	600	650	800
Id @ 25°C (A Tc)	46	31	37	43.3	54.9
Rds On Max @ Id, Vgs (mOhm)	76 @ 23A, 10V	70 @ 15.1A, 10V	80 @ 11.8A, 10V	80 @ 17.6A, 10V	85 @ 32.6A, 10V
Vgs(th) Max @ Id (V)	5.5 @ 4mA	4.5 @ 760µA	4 @ 590µA	4.5 @ 1.76mA	3.9 @ 3.3mA
Qg Max @ Vgs (nC)	75 @ 10V	67 @ 10V	51 @ 10V	161 @ 10V	288 @ 10V
Power Dissipation Max (W Tc)	660	156	129	391	500
Operating Temperature (°C TJ)	-55 to 150	-55 to 150	-55 to 150	-40 to 150	-55 to 150
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Series	HiPerFET™ Ultra X2	CoolMOS™ CFD7	CoolMOS™ P7	CoolMOS™	CoolMOS™ C3

Engineering Selection Recommendations

IPW60R070CFD7XKSA1 (Infineon CoolMOS™ CFD7)

This substitute operates at 650V Vdss matching the original part specification. The 31A continuous drain current is lower than the IXFH46N65X2, making this option suitable for applications where current requirements do not exceed 31A. The device maintains RoHS3 compliance and operates across the full -55°C to 150°C temperature range. Gate charge is reduced to 67 nC, offering improved switching performance. Power dissipation is limited to 156W, requiring thermal management consideration in high-power applications.

IPW60R080P7XKSA1 (Infineon CoolMOS™ P7)

This substitute operates at 600V Vdss, which is 50V lower than the IXFH46N65X2. The 37A continuous drain current is below the original specification. This device is appropriate for applications with reduced voltage stress requirements and current demands below 37A. RoHS3 compliance is maintained with full temperature range operation. Gate charge of 51 nC provides efficient switching characteristics. Power dissipation capability is 129W.

IPW65R080CFDAFKSA1 (Infineon CoolMOS™)

This substitute matches the 650V Vdss rating and provides 43.3A continuous drain current, closely approaching the original 46A specification. Power dissipation reaches 391W, providing substantial thermal capacity. The device carries AEC-Q101 automotive qualification and is suitable for automotive-grade applications. Operating temperature range is -40°C to 150°C, with the lower limit at -40°C rather than -55°C. RoHS3 compliance is maintained. Gate charge is elevated to 161 nC.

SPW55N80C3FKSA1 (Infineon CoolMOS™ C3)

This substitute operates at 800V Vdss, providing 150V overvoltage margin above the original specification. The 54.9A continuous drain current exceeds the original 46A rating. Power dissipation capability is 500W. The device maintains RoHS3 compliance and operates across -55°C to 150°C. Gate charge is significantly elevated to 288 nC. This option is suitable for applications requiring higher voltage withstand capability and current capacity.

Frequently Asked Questions (FAQ)

Q: Can the IPW60R070CFD7XKSA1 directly replace the IXFH46N65X2 in all applications?

A: The IPW60R070CFD7XKSA1 shares the 650V Vdss rating and TO-247-3 package with the IXFH46N65X2. However, the continuous drain current is limited to 31A compared to 46A. Direct substitution is valid only in applications where the actual circuit current demand does not exceed 31A. Power dissipation is also reduced to 156W, requiring verification that thermal requirements are met.

Q: What is the voltage difference between the IXFH46N65X2 and IPW60R080P7XKSA1?

A: The IPW60R080P7XKSA1 operates at 600V Vdss while the IXFH46N65X2 is rated for 650V Vdss. This 50V difference means the Infineon device has reduced voltage withstand capability. Substitution is appropriate only in circuits where the maximum voltage stress does not exceed 600V.

Q: Is the IPW65R080CFDAFKSA1 suitable for automotive applications?

A: Yes. The IPW65R080CFDAFKSA1 carries AEC-Q101 automotive qualification and is designated as an automotive-grade device. It maintains 650V Vdss and provides 43.3A continuous drain current with 391W power dissipation. The operating temperature range is -40°C to 150°C. This device is appropriate for automotive circuit designs requiring qualified components.

Q: Why does the SPW55N80C3FKSA1 have higher gate charge than the original part?

A: The SPW55N80C3FKSA1 operates at 800V Vdss and provides 54.9A continuous drain current, both exceeding the original IXFH46N65X2 specifications. The higher gate charge of 288 nC reflects the larger die size and increased capacitance required to support these higher ratings. Gate drive circuits must be capable of supplying the additional charge within acceptable switching time parameters.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four substitute parts listed—IPW60R070CFD7XKSA1, IPW60R080P7XKSA1, IPW65R080CFDAFKSA1, and SPW55N80C3FKSA1—are RoHS3 compliant, matching the compliance status of the IXFH46N65X2.

Q: Can the SPW55N80C3FKSA1 be used in place of the IXFH46N65X2 without circuit modification?

A: The SPW55N80C3FKSA1 maintains the TO-247-3 package and through-hole mounting compatibility. However, the 800V Vdss rating is 150V higher than the original specification, and gate charge is significantly elevated to 288 nC. Circuit verification is required to confirm that gate drive capability and voltage stress margins are appropriate for the application. The higher voltage rating does not prevent substitution but requires design review.

Q: What is the minimum continuous drain current among the substitute parts?

A: The IPW60R070CFD7XKSA1 has the lowest continuous drain current rating at 31A, compared to the original IXFH46N65X2 at 46A. This device is suitable only for applications where circuit current does not exceed 31A.

Q: Do all substitute parts operate across the same temperature range as the IXFH46N65X2?

A: Three of the four substitutes—IPW60R070CFD7XKSA1, IPW60R080P7XKSA1, and SPW55N80C3FKSA1—operate across -55°C to 150°C, matching the original part. The IPW65R080CFDAFKSA1 has a lower temperature limit of -40°C, making it unsuitable for applications requiring operation below -40°C.

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