IXFH80N65X2 Equivalent & Substitute Parts

Part Overview

The IXFH80N65X2 is an N-Channel 650V 80A MOSFET manufactured by IXYS in the HiPerFET™ Ultra X2 series. This device is housed in a TO-247 through-hole package and is designed for high-power switching applications requiring 650V drain-to-source voltage capability with 80A continuous drain current at 25°C. The part is currently Active in product status with 18,867 units in stock.

Equivalent and substitute parts are identified when applications require alternative sourcing due to inventory constraints, supply chain considerations, or when design specifications allow for relaxed electrical parameters within acceptable operating ranges. Substitute devices must maintain compatibility with the TO-247 through-hole mounting standard and operate within the same temperature range (-55°C to 150°C).

Key Parameters

Parameter	IXFH80N65X2 Value	Unit	Substitution Relevance
Drain to Source Voltage (Vdss)	650	V	Critical - Minimum voltage rating required
Continuous Drain Current (Id) @ 25°C	80	A	Critical - Minimum current capability required
Rds On (Max) @ 40A, 10V	40	mOhm	Important - Affects power dissipation and efficiency
Gate Charge (Qg) @ 10V	143	nC	Important - Affects switching speed and gate drive requirements
Power Dissipation (Max)	890	W	Important - Thermal management capability
Operating Temperature Range	-55 to 150	°C	Critical - Must match or exceed application requirements
Mounting Type	Through Hole	-	Critical - Physical compatibility
Package / Case	TO-247-3	-	Critical - Pin configuration and footprint compatibility
Vgs (Max)	±30	V	Important - Gate drive voltage compatibility

Substitute Part Grouping Explanation

Substitution logic for the IXFH80N65X2 is based on the following criteria:

Critical Parameters (Must Meet or Exceed):

Drain-to-Source Voltage (Vdss): Substitute must be rated ≥650V
Continuous Drain Current (Id): Substitute must be rated ≥80A at 25°C
Operating Temperature Range: Substitute must support -55°C to 150°C
Mounting Type and Package: Substitute must be Through Hole TO-247-3 compatible

Important Parameters (Should Match Closely):

Rds On (Max): Lower values preferred for reduced power dissipation
Gate Charge (Qg): Lower values preferred for faster switching
Power Dissipation (Max): Higher values provide thermal margin
Vgs (Max): Must accommodate gate drive circuit voltage levels

Acceptable Variations:

Drain current may be lower if application allows (minimum 80A requirement)
Voltage rating may be higher (provides safety margin)
Rds On may be slightly higher if thermal design accommodates
Gate charge may vary based on switching frequency requirements

Substitute parts are grouped into two categories: Direct Substitutes (meet or exceed all critical parameters) and Conditional Substitutes (meet voltage and current with trade-offs in other parameters).

Parameter Comparison

Parameter	IXFH80N65X2	APT77N60BC6	FCH041N60E	IPW60R040C7XKSA1	IPW60R045CPFKSA1	SCT3030ALGC11	Unit
Manufacturer	IXYS	Microchip Technology	onsemi	Infineon Technologies	Infineon Technologies	Rohm Semiconductor	-
FET Type	N-Channel MOSFET	N-Channel MOSFET	N-Channel MOSFET	N-Channel MOSFET	N-Channel MOSFET	N-Channel SiCFET	-
Vdss	650	600	600	600	650	650	V
Id @ 25°C	80	77	77	50	60	70	A
Rds On (Max)	40	41	41	40	45	39	mOhm
Gate Charge (Qg) @ 10V	143	260	380	107	190	104	nC
Vgs (Max)	±30	±20	±20	±20	±20	+22, -4	V
Power Dissipation (Max)	890	481	592	227	431	262	W
Operating Temperature	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 175	°C
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	-
Product Status	Active	Active	Not For New Designs	Active	Not For New Designs	Active	-
RoHS3 Compliant	Yes	Yes	Yes	Yes	Yes	Yes	-
Inventory (Pcs)	18867	1100	1709	2320	3415	1900	-

Engineering Selection Recommendations

Direct Substitutes (Recommended for New Designs):

IPW60R045CPFKSA1 (Infineon Technologies CoolMOS™): This device matches the 650V voltage rating and provides 60A continuous drain current. While the current rating is 20A lower than the IXFH80N65X2, the Rds On of 45mOhm is comparable. This substitute is suitable for applications where the 80A requirement can be relaxed to 60A. However, this part is marked "Not For New Designs," limiting its use to legacy system support.

SCT3030ALGC11 (Rohm Semiconductor SiCFET): This silicon carbide FET meets the 650V voltage requirement with 70A continuous drain current. The SiCFET technology offers superior switching characteristics with lower gate charge (104 nC) and lower input capacitance (1526 pF), resulting in improved efficiency. The device supports extended operating temperature to 175°C. This part is Active in product status and suitable for new designs requiring enhanced thermal performance.

Conditional Substitutes (Legacy or Reduced-Current Applications):

APT77N60BC6 (Microchip Technology CoolMOS™): Rated at 600V and 77A, this device falls short of the 650V requirement by 50V. Substitution is conditional on application voltage headroom analysis. The part is Active in product status with 1,100 units in stock.

FCH041N60E (onsemi SuperFET® II): Rated at 600V and 77A, this device also requires voltage margin verification. The part is marked "Not For New Designs," restricting use to existing system maintenance only.

IPW60R040C7XKSA1 (Infineon Technologies CoolMOS™ C7): Rated at 600V and 50A, this device is suitable only for applications with significantly reduced current requirements. The 50A rating represents a 37.5% reduction from the IXFH80N65X2 specification. This part is Active in product status.

Compliance and Certification Status: All listed substitutes maintain RoHS3 compliance and REACH unaffected status, matching the original part's regulatory standing. All devices are classified under ECCN EAR99 and HTSUS 8541.29.0095.

Frequently Asked Questions (FAQ)

Q: Can the APT77N60BC6 be used as a direct replacement for the IXFH80N65X2?

A: The APT77N60BC6 operates at 600V, which is 50V below the IXFH80N65X2 specification. Direct substitution requires verification that the application circuit provides adequate voltage margin. The 77A current rating is acceptable for the 80A requirement. Electrical compatibility is confirmed through matching TO-247-3 packaging and operating temperature range.

Q: What is the primary advantage of the SCT3030ALGC11 over the IXFH80N65X2?

A: The SCT3030ALGC11 employs silicon carbide (SiCFET) technology, delivering significantly lower gate charge (104 nC versus 143 nC) and substantially lower input capacitance (1526 pF versus 8245 pF). These characteristics enable faster switching transitions and reduced gate drive power consumption. The extended maximum junction temperature of 175°C provides additional thermal margin compared to the 150°C limit of the IXFH80N65X2.

Q: Why is the IPW60R040C7XKSA1 listed as a substitute if it only provides 50A?

A: The IPW60R040C7XKSA1 is included for applications where the design has been modified to operate at reduced current levels or where parallel device configurations are employed. The 600V rating requires voltage margin verification. This part is suitable for legacy system support or derivative designs with lower current specifications.

Q: Are there any gate drive voltage compatibility issues with these substitutes?

A: The IXFH80N65X2 specifies Vgs (Max) of ±30V. Substitute parts specify ±20V (APT77N60BC6, FCH041N60E, IPW60R040C7XKSA1, IPW60R045CPFKSA1) or +22V, -4V (SCT3030ALGC11). Gate drive circuits designed for ±30V operation must be verified for compatibility with the lower ±20V rating. The SCT3030ALGC11 asymmetric gate voltage specification requires specific attention to negative gate voltage application.

Q: Which substitute is recommended for new product designs?

A: The SCT3030ALGC11 is the recommended substitute for new designs. It maintains the 650V and 70A specifications, is marked Active in product status, and offers superior switching performance through SiCFET technology. All other substitutes either fall below the voltage specification (600V) or are marked "Not For New Designs."

Q: What is the impact of higher gate charge in the FCH041N60E compared to the IXFH80N65X2?

A: The FCH041N60E specifies 380 nC gate charge at 10V, compared to 143 nC for the IXFH80N65X2. Higher gate charge increases the time required to switch the device on and off, resulting in higher switching losses and reduced maximum switching frequency capability. Gate drive circuit current sourcing and sinking capability must be verified to accommodate the increased charge transfer requirement.

Q: Can multiple lower-current substitutes be paralleled to achieve 80A capability?

A: Paralleling MOSFETs requires careful circuit design to ensure balanced current distribution. The IPW60R040C7XKSA1 (50A) could theoretically be paralleled with another device to approach 80A capability, but this approach introduces complexity in gate drive design, thermal management, and reliability considerations. Paralleling is not recommended without detailed circuit analysis and thermal simulation.

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

A: Parts marked "Not For New Designs" indicate that the manufacturer has discontinued active development and support for these devices. While they remain available in inventory, they are intended for maintenance of existing systems only. New product designs should utilize Active status parts such as the SCT3030ALGC11, APT77N60BC6, or IPW60R040C7XKSA1.

Q: How does the TO-247-3 package ensure mechanical compatibility?

A: All listed substitutes employ the TO-247-3 package standard, ensuring identical pin configuration, lead spacing, and mounting hole alignment. This guarantees direct mechanical compatibility with existing PCB layouts and heat sink mounting arrangements designed for the IXFH80N65X2.

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