IXFP8N65X2 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IXFP8N65X2 is an N-Channel MOSFET manufactured by IXYS, rated for 650V drain-to-source voltage with 8A continuous drain current at 25°C. This device operates in the HiPerFET™ Ultra X2 series and is housed in a TO-220-3 through-hole package. The part is currently active in production with 967 units in stock.

Substitute parts are necessary when the IXFP8N65X2 becomes unavailable, when design requirements shift to alternative voltage or current ratings, or when supply chain constraints require sourcing from alternative manufacturers. The substitute parts listed maintain compatibility within the N-Channel MOSFET category while accommodating variations in voltage rating, current capacity, and thermal performance.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	IXFP8N65X2	—
Manufacturer	IXYS	—
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	650	V
Current - Continuous Drain (Id) @ 25°C	8	A
Rds On (Max) @ Id, Vgs	450	mOhm @ 4A, 10V
Power Dissipation (Max)	150	W
Operating Temperature Range	-55 to 150	°C
Package / Case	TO-220-3	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution of the IXFP8N65X2 is determined by the following critical parameters:

Voltage Rating Compatibility: The drain-to-source voltage (Vdss) must equal or exceed 650V to maintain circuit protection margins. Substitute parts with lower Vdss ratings (600V) operate at reduced voltage headroom and are suitable only for applications with lower operating voltages.

Current Rating Compatibility: The continuous drain current (Id) must meet or exceed 8A at 25°C to handle the same load conditions. Parts with lower current ratings (7A, 7.5A) are suitable for reduced current applications; parts with higher ratings (10A, 11A, 12A, 13A) provide additional margin.

On-Resistance (Rds On): The maximum on-resistance at specified gate and drain conditions affects power dissipation and thermal performance. Substitute parts with comparable or lower Rds On values maintain similar efficiency characteristics.

Power Dissipation: The maximum power dissipation rating (150W) determines thermal capability. Substitute parts with lower power ratings (70W, 83W, 85W, 110W) are suitable for applications with reduced thermal loads.

Package and Mounting: All substitute parts maintain the TO-220-3 through-hole package format, ensuring mechanical and electrical compatibility with existing PCB layouts.

Operating Temperature Range: All substitute parts operate across the -55°C to 150°C range, maintaining thermal compatibility.

Compliance and Status: RoHS3 compliance and product status (Active, Not For New Designs, or Obsolete) determine long-term availability and regulatory suitability.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Power Dissipation (W)	Package	Product Status
IXFP8N65X2	IXYS	650	8	450 @ 4A, 10V	150	TO-220-3	Active
FCP7N60	onsemi	600	7	600 @ 3.5A, 10V	83	TO-220-3	Not For New Designs
STP10N60M2	STMicroelectronics	600	7.5	600 @ 3A, 10V	85	TO-220-3	Active
STP10NM60N	STMicroelectronics	600	10	550 @ 4A, 10V	70	TO-220-3	Active
STP10NM60ND	STMicroelectronics	600	8	600 @ 4A, 10V	70	TO-220-3	Obsolete
STP11N60DM2	STMicroelectronics	600	10	420 @ 5A, 10V	110	TO-220-3	Active
STP11NM60FD	STMicroelectronics	600	11	450 @ 5.5A, 10V	160	TO-220-3	Active
STP12N65M5	STMicroelectronics	650	8.5	430 @ 4.3A, 10V	70	TO-220-3	Active
STP13N80K5	STMicroelectronics	800	12	450 @ 6A, 10V	190	TO-220-3	Active
STP13NK60Z	STMicroelectronics	600	13	550 @ 4.5A, 10V	150	TO-220-3	Active

Engineering Selection Recommendations

Direct Voltage and Current Match (650V, 8A):

The STP12N65M5 provides the closest electrical match to the IXFP8N65X2. Both devices operate at 650V Vdss and deliver 8.5A continuous drain current, maintaining voltage headroom and current capacity. The STP12N65M5 features lower on-resistance (430 mOhm vs. 450 mOhm) and is manufactured by STMicroelectronics with Active product status, ensuring long-term availability and RoHS3 compliance.

Higher Current Capacity at 650V:

The STP13N80K5 operates at 800V Vdss with 12A continuous drain current, providing increased voltage and current margins. This device is suitable for applications requiring enhanced overvoltage protection or higher current handling. Product status is Active with full RoHS3 compliance.

600V Voltage Rating Alternatives:

Multiple STMicroelectronics devices operate at 600V Vdss, representing a 50V reduction in voltage rating. These parts are suitable for applications with lower operating voltages:

STP11N60DM2: 10A, 110W, Active status, 420 mOhm on-resistance
STP13NK60Z: 13A, 150W, Active status, 550 mOhm on-resistance
STP10NM60N: 10A, 70W, Active status, 550 mOhm on-resistance
STP10N60M2: 7.5A, 85W, Active status, 600 mOhm on-resistance

Obsolete and Legacy Parts:

The STP10NM60ND carries Obsolete product status and should not be selected for new designs. The FCP7N60 from onsemi is marked Not For New Designs and carries lower current (7A) and power dissipation (83W) ratings, limiting its applicability.

Compliance and Availability:

All recommended substitute parts maintain RoHS3 compliance, REACH Unaffected status, and EAR99 ECCN classification, matching the regulatory profile of the IXFP8N65X2. Parts with Active product status ensure continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can I substitute the IXFP8N65X2 with a 600V rated MOSFET?

A: Yes, provided the application operates at voltages below 600V. The 600V rating provides 50V less headroom than the original 650V specification. Verify that circuit peak voltages, transient spikes, and safety margins remain within acceptable limits. Parts such as STP11N60DM2, STP13NK60Z, and STP10NM60N are suitable 600V alternatives with Active product status.

Q: What is the difference between the STP12N65M5 and IXFP8N65X2?

A: Both devices operate at 650V Vdss and deliver comparable continuous drain current (8.5A vs. 8A). The STP12N65M5 features lower on-resistance (430 mOhm vs. 450 mOhm), resulting in reduced power dissipation and improved efficiency. The STP12N65M5 is manufactured by STMicroelectronics and carries Active product status, ensuring long-term supply availability.

Q: Can I use a higher current rated MOSFET as a substitute?

A: Yes. MOSFETs rated for higher continuous drain current (10A, 11A, 12A, 13A) provide additional current margin and thermal headroom. These devices are electrically compatible and mechanically interchangeable in TO-220-3 packages. Higher current ratings do not degrade performance in applications requiring 8A or less.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 Compliant status and REACH Unaffected classification, matching the regulatory compliance of the IXFP8N65X2.

Q: Should I use parts marked as Obsolete or Not For New Designs?

A: No. Parts with Obsolete status (STP10NM60ND) or Not For New Designs status (FCP7N60) should not be selected for new circuit designs. These designations indicate discontinued manufacturing or limited future availability. Select only parts with Active product status for new applications.

Q: What is the significance of on-resistance (Rds On) in substitution?

A: On-resistance directly affects power dissipation and thermal performance. Lower on-resistance values reduce heat generation at the same current levels. The IXFP8N65X2 specifies 450 mOhm at 4A, 10V. Substitute parts with equal or lower on-resistance maintain or improve thermal characteristics. Parts with higher on-resistance (600 mOhm) generate more heat and require thermal management verification.

Q: Can I substitute the IXFP8N65X2 with the STP13NK60Z?

A: Yes, with voltage rating consideration. The STP13NK60Z operates at 600V Vdss (50V lower) but delivers 13A continuous drain current and 150W power dissipation, matching the thermal capability of the original part. This substitution is suitable for applications operating below 600V. The device carries Active product status and full RoHS3 compliance.

Q: What package compatibility should I verify?

A: All substitute parts maintain the TO-220-3 through-hole package format, ensuring mechanical and electrical compatibility with existing PCB layouts. Pin configuration and thermal pad dimensions are standardized across all listed alternatives. No PCB redesign is required for package compatibility.

Q: How do I select between multiple substitute options?

A: Prioritize parts with Active product status for long-term availability. Match or exceed the voltage rating (650V preferred, 600V acceptable for lower voltage applications). Select current ratings that meet or exceed 8A. Verify on-resistance and power dissipation ratings against thermal design requirements. Confirm RoHS3 compliance for regulatory requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message