IXFH18N60P N-Channel 600V 18A MOSFET Equivalent & Substitute Parts

Part Overview

The IXFH18N60P is an N-Channel MOSFET manufactured by IXYS, rated for 600V drain-to-source voltage with 18A continuous drain current at 25°C. This device is packaged in TO-247AD through-hole configuration and is part of the HiPerFET™ series. The part is currently in active product status with 5530 units in stock.

Equivalent and substitute parts are identified based on matching or exceeding critical electrical parameters including drain-to-source voltage rating, continuous drain current capability, on-state resistance characteristics, and compatible through-hole packaging. Substitutes enable design flexibility when the primary part is unavailable or when application requirements allow for alternative specifications within acceptable operating ranges.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	600	V
Current - Continuous Drain (Id) @ 25°C	18	A (Tc)
Rds On (Max) @ Id, Vgs	400	mOhm @ 500mA, 10V
Vgs(th) (Max) @ Id	5.5	V @ 2.5mA
Gate Charge (Qg) (Max) @ Vgs	50	nC @ 10V
Power Dissipation (Max)	360	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Through Hole	TO-247AD
Package / Case	TO-247-3	-

Substitute Part Grouping Explanation

Substitute parts for the IXFH18N60P are selected based on the following critical parameters:

Voltage Rating Compatibility: All substitute parts maintain the 600V Vdss rating or higher, ensuring safe operation in circuits designed for the primary part.

Current Capability: Substitute parts are rated for continuous drain current of 16A or higher at 25°C, meeting or exceeding the 18A specification of the IXFH18N60P.

On-State Resistance: Rds(on) values are maintained at or below 400mOhm at 10V gate drive, ensuring comparable conduction losses and thermal performance.

Gate Threshold Voltage: Vgs(th) specifications remain within compatible ranges (4V to 5.5V) to ensure proper gate drive circuit compatibility.

Packaging: All substitutes utilize through-hole TO-247 family packaging (TO-247AD, TO-247AC, or TO-247-3), enabling direct mechanical and electrical compatibility.

Temperature Range: Operating temperature ranges of -55°C to 150°C or better ensure thermal compatibility with the primary part.

Compliance: All parts maintain RoHS3 compliance, MSL Level 1, and REACH unaffected status, matching the regulatory profile of the IXFH18N60P.

Parameter Comparison

Parameter	IXFH18N60P	AOK20N60L	IRFPC60PBF	STW11NM80	STW18N60DM2
Manufacturer	IXYS	Alpha & Omega Semiconductor Inc.	Vishay Siliconix	STMicroelectronics	STMicroelectronics
Vdss (V)	600	600	600	800	600
Id @ 25°C (A)	18	20	16	11	12
Rds On (Max) @ 10V (mOhm)	400 @ 500mA	370 @ 10A	400 @ 9.6A	400 @ 5.5A	295 @ 6A
Vgs(th) (Max) (V)	5.5 @ 2.5mA	4.5 @ 250µA	4 @ 250µA	5 @ 250µA	5 @ 250µA
Gate Charge Qg (Max) (nC)	50 @ 10V	74 @ 10V	210 @ 10V	43.6 @ 10V	20 @ 10V
Power Dissipation (Max) (W)	360	417	280	150	90
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-65 to 150	to 150
Package	TO-247AD	TO-247	TO-247AC	TO-247-3	TO-247-3
Product Status	Active	Obsolete	Active	Active	Active
RoHS3 Compliant	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Primary Substitutes (Preferred):

AOK20N60L provides the closest electrical match with 20A continuous drain current and 370mOhm on-state resistance, exceeding the IXFH18N60P specifications. However, this part carries obsolete product status, limiting long-term availability and future support. Use only when existing inventory is confirmed and end-of-life considerations are acceptable.

IRFPC60PBF from Vishay Siliconix maintains active product status with 600V rating and 400mOhm on-state resistance. The 16A continuous drain current is slightly below the primary part but remains suitable for applications where the full 18A capability is not required. This part is actively manufactured and supported.

Secondary Substitutes (Application-Dependent):

STW18N60DM2 from STMicroelectronics offers the lowest on-state resistance at 295mOhm and the lowest gate charge at 20nC, providing superior switching efficiency. However, the 12A continuous drain current rating is significantly reduced compared to the IXFH18N60P. This part is suitable only for applications where current requirements do not exceed 12A.

STW11NM80 features an elevated 800V drain-to-source voltage rating with active product status. The 11A continuous drain current and 150W power dissipation are substantially reduced. This part is appropriate only for high-voltage applications where the 600V rating of the primary part is insufficient and current requirements are lower.

Compliance and Regulatory Alignment:

All substitute parts maintain RoHS3 compliance, MSL Level 1 moisture sensitivity, and REACH unaffected status, ensuring regulatory equivalence with the IXFH18N60P. Parts with active product status (IRFPC60PBF, STW11NM80, STW18N60DM2) provide superior long-term supply chain stability compared to the obsolete AOK20N60L.

Frequently Asked Questions (FAQ)

Q: Can the AOK20N60L directly replace the IXFH18N60P in all applications?

A: The AOK20N60L provides superior electrical specifications with 20A current rating and lower on-state resistance. However, its obsolete product status presents supply chain risk. Direct replacement is electrically valid but requires confirmation of available inventory and acceptance of potential future unavailability.

Q: What is the primary limitation of the STW11NM80 as a substitute?

A: The STW11NM80 is rated for 800V drain-to-source voltage and only 11A continuous drain current. This part is suitable only for applications requiring higher voltage capability than 600V and where current requirements do not exceed 11A. It is not a general-purpose substitute for the IXFH18N60P.

Q: Is the IRFPC60PBF suitable for applications requiring the full 18A rating of the IXFH18N60P?

A: The IRFPC60PBF is rated for 16A continuous drain current, which is 2A below the IXFH18N60P specification. This part is suitable for applications where the actual operating current does not exceed 16A. Thermal analysis is required to confirm adequate margin in applications approaching this limit.

Q: How does the STW18N60DM2 compare in terms of switching performance?

A: The STW18N60DM2 exhibits superior switching characteristics with gate charge of only 20nC compared to 50nC for the IXFH18N60P, and lower on-state resistance of 295mOhm. However, the 12A current rating limits its use to lower-current applications. This part is optimal for high-frequency switching applications where current requirements remain below 12A.

Q: Are all substitute parts available in the same TO-247 package family?

A: All substitute parts use TO-247 family through-hole packaging (TO-247AD, TO-247AC, or TO-247-3). These packages are mechanically and electrically compatible, enabling direct board-level substitution without PCB redesign.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts maintain RoHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and REACH unaffected status, matching the regulatory profile of the IXFH18N60P. No additional compliance verification is required for regulatory equivalence.

Q: Which substitute part offers the best long-term supply chain stability?

A: IRFPC60PBF, STW11NM80, and STW18N60DM2 all carry active product status, ensuring ongoing manufacturing and support. The AOK20N60L is obsolete and should be avoided for new designs or applications requiring long-term availability.

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