IXTP32N65XM N-Channel 650V 14A MOSFET Equivalent & Substitute Parts

Part Overview

The IXTP32N65XM is an N-Channel 650V 14A MOSFET manufactured by IXYS in the Ultra X series, housed in a TO-220-3 through-hole package. This device is rated for 78W power dissipation and operates across a temperature range of -55°C to 150°C. The part is currently designated as Last Time Buy, indicating that production is being discontinued. Identifying equivalent and substitute parts is necessary to ensure design continuity and support for applications requiring this device or similar electrical and mechanical characteristics.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	650	V
Continuous Drain Current (Id) @ 25°C	14	A
Rds On (Max) @ 16A, 10V	135	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	5.5	V
Gate Charge (Qg) @ 10V	54	nC
Power Dissipation (Max)	78	W
Operating Temperature Range	-55 to 150	°C
Package Type	TO-220-3	Through Hole
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)

Substitute Part Grouping Explanation

Substitution of the IXTP32N65XM is determined by the following critical parameters:

Voltage Rating (Vdss): The drain-to-source voltage must be equal to or greater than 650V to maintain electrical safety margins in the application circuit.

Current Rating (Id): The continuous drain current must be sufficient to handle the application's current demands. Parts with equal or higher current ratings are suitable substitutes.

Package Type: All substitute parts must use the TO-220-3 through-hole package to ensure mechanical and thermal compatibility with existing PCB layouts and heatsinking arrangements.

Operating Temperature Range: All candidates must support the full -55°C to 150°C operating range.

RoHS and Compliance Status: All substitute parts must maintain RoHS3 compliance and REACH unaffected status to meet regulatory requirements.

Substitute parts are grouped into two categories:

Manufacturer Recommended Substitute: IXTP24N65X2M from IXYS, representing an active product within the same manufacturer's portfolio with enhanced specifications.

Similar Substitutes: Parts from Alpha & Omega Semiconductor (AOT42S60L), Infineon Technologies (IPP60R099CPXKSA1, IPP60R099P7XKSA1, IPP60R120C7XKSA1, IPP60R120P7XKSA1), and STMicroelectronics (STP35N60DM2, STP40N65M2) that meet the core electrical and mechanical requirements.

Parameter Comparison

Parameter	IXTP32N65XM	IXTP24N65X2M	AOT42S60L	IPP60R099CPXKSA1	IPP60R099P7XKSA1	IPP60R120C7XKSA1	IPP60R120P7XKSA1	STP35N60DM2	STP40N65M2
Vdss (V)	650	650	600	650	600	600	600	600	650
Id @ 25°C (A)	14	24	37	31	31	19	26	28	32
Rds On (Max) (mOhm)	135	145	99	99	99	120	120	110	99
Vgs(th) (Max) (V)	5.5	5	3.8	3.5	4	4	4	5	4
Qg @ 10V (nC)	54	36	40	80	45	34	36	54	56.5
Power Dissipation (Max) (W)	78	37	417	255	117	92	95	210	250
Operating Temp Range (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	150
Package	TO-220-3	TO-220-3 Isolated Tab	TO-220	PG-TO220-3	PG-TO220-3	PG-TO220-3	PG-TO220-3	TO-220	TO-220
FET Type	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel
Technology	MOSFET	MOSFET	MOSFET	MOSFET	MOSFET	MOSFET	MOSFET	MOSFET	MOSFET
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Not For New Designs	Not For New Designs	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: IXTP24N65X2M

The IXTP24N65X2M is the manufacturer-recommended substitute from IXYS. This part maintains the same 650V voltage rating and TO-220-3 package configuration as the IXTP32N65XM. The IXTP24N65X2M is designated as Active product status, ensuring long-term availability and supply chain stability. It provides higher continuous drain current (24A versus 14A), making it suitable for applications requiring equal or greater current capacity. Both parts are ROHS3 compliant and REACH unaffected, meeting all regulatory requirements.

Secondary Recommendations for 650V Applications:

STP40N65M2 (STMicroelectronics): Maintains the 650V voltage rating with 32A continuous drain current. This part is Active status and ROHS3 compliant. The TO-220 package is mechanically compatible with TO-220-3 layouts. Higher current rating and lower Rds On (99mOhm) provide improved performance characteristics.

Alternative Recommendations for 600V Applications:

Applications that can operate at 600V instead of 650V have additional options:

IPP60R099P7XKSA1 (Infineon Technologies): Active status CoolMOS™ P7 series device with 31A continuous drain current and 650V equivalent performance margin at 600V rating. ROHS3 compliant.

IPP60R120P7XKSA1 (Infineon Technologies): Active status CoolMOS™ P7 series device with 26A continuous drain current at 600V rating. ROHS3 compliant.

STP35N60DM2 (STMicroelectronics): Active status MDmesh™ DM2 series device with 28A continuous drain current at 600V rating. ROHS3 compliant.

Parts Not Recommended for New Designs:

AOT42S60L and IPP60R099CPXKSA1 are designated as Not For New Designs. While these parts meet electrical and mechanical requirements, their product status restricts their use in new design initiatives.

Frequently Asked Questions (FAQ)

Q: Can the IXTP32N65XM be directly replaced with the IXTP24N65X2M?

A: Yes. Both parts share the same 650V voltage rating, TO-220-3 package type, and -55°C to 150°C operating temperature range. The IXTP24N65X2M provides higher current capacity (24A versus 14A), making it a direct electrical and mechanical substitute. The isolated tab variant of the IXTP24N65X2M package is compatible with standard TO-220-3 PCB layouts.

Q: What is the significance of the voltage rating difference between 650V and 600V substitutes?

A: The IXTP32N65XM is rated for 650V drain-to-source voltage. Substitutes rated at 600V have a lower voltage margin. Selection of 600V alternatives is appropriate only when the application circuit operates below 600V. For circuits designed to the full 650V specification, 650V-rated substitutes (IXTP24N65X2M or STP40N65M2) are required.

Q: Are all substitute parts available in the same package configuration?

A: All substitute parts use TO-220 or TO-220-3 through-hole packages. The IXTP24N65X2M uses a TO-220 Isolated Tab variant, which is mechanically compatible with standard TO-220-3 PCB footprints. Infineon CoolMOS™ parts use PG-TO220-3 package designation, which is electrically and mechanically equivalent to TO-220-3. STMicroelectronics parts use standard TO-220 packages, also compatible with TO-220-3 layouts.

Q: Why are some substitute parts marked as "Not For New Designs"?

A: Parts designated as Not For New Designs indicate that the manufacturer is phasing out production or has discontinued active development. While these parts may still be available in inventory, they are not recommended for new circuit designs due to uncertain long-term supply availability. Active status parts are preferred for new designs.

Q: What is the impact of different Rds On values on circuit performance?

A: Rds On (on-state resistance) directly affects power dissipation and heat generation. Lower Rds On values result in reduced power loss. The IXTP32N65XM has Rds On of 135mOhm. Substitutes with lower Rds On values (such as AOT42S60L, IPP60R099CPXKSA1, STP40N65M2 at 99mOhm) generate less heat and improve overall circuit efficiency. Higher Rds On values increase power dissipation and may require enhanced thermal management.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components in most jurisdictions.

Q: What considerations apply when selecting between higher current-rated substitutes?

A: Higher current-rated substitutes (such as 24A, 28A, 31A, or 37A devices) are electrically compatible with the 14A IXTP32N65XM application. Selection should be based on application requirements: if the circuit requires only 14A, any substitute with equal or higher current rating is suitable. Higher current-rated devices typically have lower Rds On values and higher power dissipation ratings, providing design margin and improved thermal performance. Verify that the application's gate drive circuit can properly control the selected device, as different parts may have different gate charge (Qg) and threshold voltage characteristics.

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