IRFPS38N60LPBF N-Channel 600V 38A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFPS38N60LPBF is an N-Channel 600V 38A MOSFET manufactured by Vishay Siliconix in the SUPER-247™ (TO-274AA) package. This device is rated for 540W power dissipation and operates across a temperature range of -55°C to 150°C. The part is classified as obsolete, making equivalent and substitute components necessary for ongoing system support and new design alternatives. Substitute parts must maintain electrical compatibility across drain-source voltage, continuous drain current, on-resistance characteristics, and gate charge specifications while accommodating different package formats and manufacturer technologies.

Key Parameters

Parameter	Value	Specification Basis
Drain to Source Voltage (Vdss)	600 V	Maximum voltage rating
Continuous Drain Current (Id) @ 25°C	38A (Tc)	Maximum continuous current capability
Rds On (Max) @ Id, Vgs	150mOhm @ 23A, 10V	On-state resistance at specified conditions
Gate Charge (Qg) (Max) @ Vgs	320 nC @ 10V	Switching speed and drive requirements
Power Dissipation (Max)	540W (Tc)	Thermal management capability
Operating Temperature Range	-55°C ~ 150°C (TJ)	Junction temperature limits
Mounting Type	Through Hole	PCB assembly compatibility
Package / Case	TO-274AA / SUPER-247™	Physical form factor
Vgs (Max)	±30V	Gate-source voltage rating
Input Capacitance (Ciss) (Max) @ Vds	7990 pF @ 25V	Input impedance and switching characteristics

Substitute Part Grouping Explanation

Substitution of the IRFPS38N60LPBF is determined by strict adherence to the following electrical and mechanical criteria:

Primary Substitution Criteria:

Drain-Source Voltage (Vdss): Must equal or exceed 600V
Continuous Drain Current (Id): Must equal or exceed 38A at 25°C
On-Resistance (Rds On): Must not exceed 150mOhm at specified gate-source voltage
Gate Charge (Qg): Lower values acceptable; higher values require driver evaluation
Power Dissipation: Must support thermal requirements of the application
Operating Temperature: Must span -55°C to 150°C minimum
Mounting Type: Through-hole configuration required
Package Compatibility: Physical form factor must accommodate PCB layout

Substitution Categories:

Category 1 - Direct Electrical Equivalent (Same Manufacturer): SIHFPS38N60L-GE3 maintains identical electrical specifications and package format from Vishay Siliconix. This part is active and represents the direct replacement path.

Category 2 - Functional Equivalents (Higher Current Rating): IXFH42N60P3 and IXFX48N60Q3 exceed the 38A requirement with 42A and 48A ratings respectively, providing design margin while maintaining 600V Vdss and compatible on-resistance characteristics.

Category 3 - Functional Equivalents (Lower Current Rating with Acceptable Parameters): IXFH36N60P provides 36A continuous current, which approaches the 38A specification. This part is acceptable where application current demands do not exceed 36A.

Category 4 - Reduced Performance Substitutes: IPW60R099CPAFKSA1, IPW60R160C6FKSA1, and IPW60R190C6FKSA1 provide 600V Vdss but with reduced current ratings (31A, 23.8A, and 20.2A respectively). These are suitable only for applications where continuous drain current requirements are lower than the original specification.

Category 5 - Alternative Package Options: IXFR48N60Q3 (ISOPLUS247™) and IXFX48N60Q3 (PLUS247™-3) offer different package formats while maintaining electrical performance above the original specification.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Pd (W)	Tj Range (°C)	Package	Status
IRFPS38N60LPBF	Vishay Siliconix	600	38	150 @ 23A, 10V	320 @ 10V	540	-55 to 150	SUPER-247™	Obsolete
SIHFPS38N60L-GE3	Vishay Siliconix	600	38	150 @ 23A, 10V	320 @ 10V	540	-55 to 150	SUPER-247™	Active
IXFH42N60P3	IXYS	600	42	185 @ 500mA, 10V	78 @ 10V	830	-55 to 150	TO-247-3	Active
IXFX48N60Q3	IXYS	600	48	140 @ 24A, 10V	140 @ 10V	1000	-55 to 150	TO-247-3 Variant	Active
IXFH36N60P	IXYS	600	36	190 @ 18A, 10V	102 @ 10V	650	-55 to 150	TO-247-3	Active
IXFH50N60P3	IXYS	600	50	145 @ 500mA, 10V	94 @ 10V	1040	-55 to 150	TO-247-3	Active
IPW60R099CPAFKSA1	Infineon Technologies	600	31	105 @ 18A, 10V	80 @ 10V	255	-40 to 150	TO-247-3	Active
IPW60R160C6FKSA1	Infineon Technologies	600	23.8	160 @ 11.3A, 10V	75 @ 10V	176	-55 to 150	TO-247-3	Not For New Designs
IPW60R190C6FKSA1	Infineon Technologies	600	20.2	190 @ 9.5A, 10V	63 @ 10V	151	-55 to 150	TO-247-3	Not For New Designs
IXFR48N60Q3	IXYS	600	32	154 @ 24A, 10V	140 @ 10V	500	-55 to 150	ISOPLUS247™	Active
STW26NM60N	STMicroelectronics	600	20	165 @ 10A, 10V	60 @ 10V	140	-55 to 150	TO-247-3	Active

Engineering Selection Recommendations

Recommended Primary Substitute:

SIHFPS38N60L-GE3 is the recommended direct replacement for the obsolete IRFPS38N60LPBF. This Vishay Siliconix part maintains identical electrical specifications, gate charge characteristics, and power dissipation rating. The part is currently active with established supply availability. RoHS3 compliance and REACH unaffected status align with modern manufacturing standards. Packaging remains compatible with existing PCB layouts designed for SUPER-247™ format.

Recommended Secondary Substitutes (Higher Current Capability):

IXFH42N60P3 and IXFX48N60Q3 are suitable where design margins for current handling are desired. Both parts exceed the 38A specification with 42A and 48A ratings respectively. IXFH42N60P3 operates in the HiPerFET™ Polar3™ series with active product status and RoHS3 compliance. IXFX48N60Q3 provides the highest current rating (48A) and power dissipation (1000W) among active alternatives, with compatible operating temperature range and gate charge characteristics suitable for existing driver circuits.

Conditional Substitutes (Current-Limited Applications):

IPW60R099CPAFKSA1 is acceptable for applications where continuous drain current does not exceed 31A. This Infineon CoolMOS™ part offers superior on-resistance (105mOhm) and reduced gate charge (80nC), providing switching efficiency benefits. Automotive qualification (AEC-Q101) and active product status support long-term availability. Temperature range limitation (-40°C minimum) requires verification against application requirements.

Not Recommended for New Designs:

IPW60R160C6FKSA1 and IPW60R190C6FKSA1 carry "Not For New Designs" status from Infineon. While electrically functional, these parts present supply continuity risk and should be avoided in new development efforts.

Package Format Alternatives:

IXFR48N60Q3 (ISOPLUS247™) and IXFX48N60Q3 (PLUS247™-3) provide alternative package formats with improved thermal characteristics. These options require PCB layout modification but maintain electrical compatibility and exceed the original current specification.

Frequently Asked Questions (FAQ)

Q: Can SIHFPS38N60L-GE3 be used as a direct drop-in replacement for IRFPS38N60LPBF?

A: Yes. SIHFPS38N60L-GE3 maintains identical electrical specifications including 600V Vdss, 38A continuous drain current, 150mOhm on-resistance, and 320nC gate charge. The SUPER-247™ package format is compatible with existing PCB designs. The primary difference is product status: SIHFPS38N60L-GE3 is active with current supply availability.

Q: What is the significance of gate charge (Qg) differences between substitute parts?

A: Gate charge determines the energy required to switch the MOSFET and influences driver circuit design. Lower gate charge (such as 63-80nC in Infineon CoolMOS™ parts) reduces switching losses and driver power requirements. Higher gate charge (such as 320nC in the original part) requires proportionally more driver current. Existing driver circuits designed for 320nC can accommodate lower gate charge values without modification, but the reverse is not true.

Q: Are IXYS HiPerFET™ parts (IXFH42N60P3, IXFH50N60P3) compatible with the original circuit?

A: IXYS HiPerFET™ parts are electrically compatible where continuous drain current requirements do not exceed their rated values. IXFH42N60P3 (42A) and IXFH50N60P3 (50A) both exceed the 38A specification, providing design margin. On-resistance values (185mOhm and 145mOhm respectively) are comparable to the original 150mOhm specification. Gate charge is significantly lower (78nC and 94nC), which benefits switching performance. TO-247-3 package format is mechanically compatible with TO-274AA layouts.

Q: Why do some substitute parts have lower current ratings than the original IRFPS38N60LPBF?

A: Infineon CoolMOS™ parts (IPW60R099CPAFKSA1, IPW60R160C6FKSA1, IPW60R190C6FKSA1) prioritize on-resistance and gate charge optimization over maximum current rating. These parts are suitable for applications where continuous drain current is lower than 38A. Selection depends on actual application current requirements, not the original part's maximum rating.

Q: What is the impact of different package formats (SUPER-247™, TO-247-3, ISOPLUS247™, PLUS247™-3)?

A: All listed package formats are through-hole configurations with compatible mounting on standard PCB layouts. SUPER-247™ and TO-247-3 are mechanically similar with minor pin spacing variations. ISOPLUS247™ and PLUS247™-3 offer improved thermal performance through enhanced substrate design. Package selection depends on PCB layout constraints and thermal management requirements. Existing designs using SUPER-247™ can accommodate TO-247-3 variants with minor layout adjustment.

Q: Is RoHS3 compliance important for substitute part selection?

A: All recommended substitute parts carry RoHS3 compliance status, ensuring compatibility with modern manufacturing and environmental regulations. This compliance is standard for active production parts and should be verified during procurement to ensure supply chain consistency.

Q: Can IPW60R099CPAFKSA1 be used in applications requiring the full 38A specification?

A: No. IPW60R099CPAFKSA1 is rated for 31A continuous drain current, which is below the 38A requirement. Using this part in applications demanding 38A would exceed its continuous current rating and result in thermal stress and potential device failure. This part is suitable only for applications where actual continuous drain current does not exceed 31A.

Q: What is the significance of "Not For New Designs" status on IPW60R160C6FKSA1 and IPW60R190C6FKSA1?

A: "Not For New Designs" indicates that the manufacturer (Infineon) is not recommending these parts for new product development. While existing inventory may be available, long-term supply continuity is not guaranteed. New designs should prioritize parts with "Active" status to ensure sustained availability and manufacturer support.

Q: How does operating temperature range affect substitute part selection?

A: The original IRFPS38N60LPBF operates from -55°C to 150°C. Most substitute parts maintain this range. IPW60R099CPAFKSA1 has a minimum temperature of -40°C, which is acceptable for applications not requiring operation below -40°C. Verification of application temperature requirements is necessary before selecting this part.

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