IXFP22N65X2 Equivalent & Substitute Parts

Part Overview

The IXFP22N65X2 is an N-Channel 650V 22A MOSFET manufactured by IXYS in the HiPerFET™ Ultra X2 series. This through-hole TO-220-3 package device is rated for 390W power dissipation and operates across a temperature range of -55°C to 150°C. The part is currently Active in product status and RoHS3 compliant.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining compatible mechanical packaging and thermal characteristics. The following substitute MOSFETs provide functional alternatives for applications requiring N-Channel 650V or 600V rated devices with comparable continuous drain current and on-resistance specifications.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	650	V
Continuous Drain Current (Id) @ 25°C	22	A
On-Resistance (Rds On) @ 11A, 10V	160	mOhm
Gate Threshold Voltage (Vgs(th)) @ 1.5mA	5.5	V
Gate Charge (Qg) @ 10V	38	nC
Power Dissipation (Max)	390	W
Operating Temperature Range	-55 to 150	°C
Package Type	TO-220-3	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution eligibility for the IXFP22N65X2 is determined by the following criteria:

Voltage Rating: Substitute parts must maintain a Drain to Source Voltage (Vdss) rating of 650V or higher to ensure equivalent or superior voltage withstand capability. Parts rated at 600V are acceptable for applications where the voltage margin is sufficient.

Continuous Drain Current: Substitute parts must provide a continuous drain current (Id) rating of 20A or greater at 25°C to support the primary application current requirements of the IXFP22N65X2.

On-Resistance (Rds On): Substitute parts must demonstrate on-resistance values within 160–200 mOhm at the specified gate voltage (10V) to maintain comparable conduction losses and thermal performance.

Package Compatibility: All substitute parts must utilize the TO-220-3 through-hole package format to ensure mechanical and thermal interface compatibility with existing PCB designs and heatsink assemblies.

Operating Temperature Range: Substitute parts must support the full operating temperature range of -55°C to 150°C to maintain functional equivalence across all environmental conditions.

Compliance Status: All substitute parts must maintain RoHS3 compliance and REACH unaffected status to satisfy regulatory and supply chain requirements.

Parameter Comparison

Parameter	IXFP22N65X2	IPP65R190C7FKSA1	SPP20N65C3XKSA1	STP25N60M2-EP	TK20E60W,S1VX
Manufacturer	IXYS	Infineon Technologies	Infineon Technologies	STMicroelectronics	Toshiba Semiconductor
Vdss (V)	650	650	650	600	600
Id @ 25°C (A)	22	13	20.7	18	20
Rds On @ 10V (mOhm)	160 @ 11A	190 @ 5.7A	190 @ 13.1A	188 @ 9A	155 @ 10A
Gate Charge Qg @ 10V (nC)	38	23	114	29	48
Power Dissipation (W)	390	72	208	150	165
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	TO-220-3	PG-TO220-3	PG-TO220-3	TO-220	TO-220
Product Status	Active	Active	Not For New Designs	Active	Active
RoHS3 Compliance	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Primary Substitute: SPP20N65C3XKSA1

The SPP20N65C3XKSA1 from Infineon Technologies provides the closest electrical equivalence to the IXFP22N65X2, with matching 650V voltage rating and 20.7A continuous drain current. On-resistance of 190 mOhm at 10V is within acceptable tolerance of the primary part. However, this part carries a "Not For New Designs" product status, limiting its suitability for new development projects. Existing designs currently utilizing this part may continue with supply from existing inventory (1283 pcs available).

Recommended Substitute: STP25N60M2-EP

The STP25N60M2-EP from STMicroelectronics is recommended for new designs requiring a direct substitute. This part maintains Active product status and provides 18A continuous drain current with 188 mOhm on-resistance at 10V. The voltage rating is reduced to 600V, which is acceptable for applications where the 50V margin reduction does not impact system design margins. The MDmesh™ M2-EP series offers proven reliability and full RoHS3 compliance. Inventory availability is 1448 pcs.

Alternative Substitute: TK20E60W,S1VX

The TK20E60W,S1VX from Toshiba Semiconductor provides 20A continuous drain current with superior on-resistance of 155 mOhm at 10V, resulting in lower conduction losses. This part is rated at 600V and carries Active product status. The lower on-resistance may provide thermal performance benefits in high-current applications. Inventory availability is 846 pcs.

Not Recommended: IPP65R190C7FKSA1

The IPP65R190C7FKSA1 from Infineon Technologies, while maintaining 650V rating and Active status, provides only 13A continuous drain current. This current rating is insufficient for applications requiring the full 22A capability of the IXFP22N65X2 and does not qualify as a functional substitute for this device.

Frequently Asked Questions (FAQ)

Q: Can the IPP65R190C7FKSA1 be used as a substitute for the IXFP22N65X2?

A: No. The IPP65R190C7FKSA1 is rated for 13A continuous drain current, which is below the 22A requirement of the IXFP22N65X2. This part cannot support the full current capacity of the primary device and is not a functional substitute.

Q: What is the significance of the "Not For New Designs" status on the SPP20N65C3XKSA1?

A: This designation indicates that while the part remains available from existing inventory and may be used in legacy or ongoing production, it is not recommended for incorporation into new product designs. New designs should prioritize parts with Active status such as STP25N60M2-EP or TK20E60W,S1VX.

Q: Why do some substitute parts have a 600V rating instead of 650V?

A: The IXFP22N65X2 is rated for 650V, while some substitutes are rated for 600V. A 50V reduction in voltage rating is acceptable when system design margins accommodate this change. The 600V-rated parts (STP25N60M2-EP and TK20E60W,S1VX) remain suitable for most applications where the primary device operates below 600V.

Q: Are all substitute parts compatible with the same PCB layout and heatsink?

A: All substitute parts utilize the TO-220-3 through-hole package format, ensuring mechanical and thermal interface compatibility with existing PCB designs and heatsink assemblies. No layout modifications are required for package substitution.

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

A: Gate charge affects the gate drive circuit requirements and switching speed. The IXFP22N65X2 has 38 nC gate charge. Substitutes range from 23 nC (IPP65R190C7FKSA1) to 114 nC (SPP20N65C3XKSA1). Lower gate charge reduces drive power requirements; higher gate charge may require increased drive current. Verify that the gate drive circuit can accommodate the substitute part's gate charge specification.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All substitute parts listed are RoHS3 compliant and REACH unaffected, matching the compliance status of the IXFP22N65X2. All parts carry EAR99 ECCN classification and identical HTSUS codes.

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

A: Tc (case temperature) and Ta (ambient temperature) are different measurement references. The IXFP22N65X2 specifies continuous drain current at Tc (case temperature), while the TK20E60W,S1VX specifies at Ta (ambient temperature). Both parts operate across the same -55°C to 150°C junction temperature range.

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