IRFPS3815PBF N-Channel 150V 105A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFPS3815PBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 150V drain-to-source voltage and 105A continuous drain current in the SUPER-247™ (TO-274AA) package. This device is part of the HEXFET® series and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for new designs and ongoing production requirements. Substitute parts maintain the core electrical specifications while offering improved performance characteristics or alternative packaging options.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	150	V
Continuous Drain Current (Id) @ 25°C	105	A (Tc)
On-State Resistance (Rds On Max) @ Id, Vgs	15 mOhm @ 63A, 10V	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ Id	5	V @ 250µA
Gate Charge (Qg Max) @ Vgs	390	nC @ 10V
Power Dissipation (Max)	441	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	SUPER-247™ (TO-274AA)	Through Hole
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)

Substitute Part Grouping Explanation

Substitute parts for the IRFPS3815PBF are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Core Electrical Requirements:

Drain-to-Source Voltage (Vdss): 150V (exact match required)
FET Type: N-Channel (exact match required)
Technology: MOSFET Metal Oxide (exact match required)
Operating Temperature Range: -55°C to 175°C (exact match required)

Performance Parameters (allowable variation):

Continuous Drain Current (Id): Substitute parts rated at 100A or higher satisfy applications requiring 105A operation
On-State Resistance (Rds On): Lower values indicate improved performance; values between 11-15 mOhm are functionally equivalent
Gate Charge (Qg): Lower values reduce switching losses; range 150-390 nC is acceptable
Power Dissipation: Substitute parts with equal or higher ratings ensure thermal compatibility

Mechanical Compatibility:

Mounting Type: Through Hole (all substitutes maintain through-hole mounting)
Package variants: TO-247AC, TO-247AD, TO-264AA, ISOPLUS247™, PLUS247™-3, and TO-3P are mechanically compatible with appropriate PCB layout modifications

Compliance & Status:

RoHS3 Compliance: All substitutes maintain RoHS3 compliance
Product Status: Active substitutes are preferred over obsolete parts
Moisture Sensitivity Level: MSL 1 (Unlimited) maintained across all options

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On Max (mOhm)	Qg Max (nC)	Power Diss. (W)	Package	Status
IRFPS3815PBF	Infineon	150	105	15 @ 63A, 10V	390 @ 10V	441	SUPER-247™ (TO-274AA)	Obsolete
IRFP4568PBF	Infineon	150	171	5.9 @ 103A, 10V	227 @ 10V	517	TO-247AC	Active
IXFH110N15T2	IXYS	150	110	13 @ 500mA, 10V	150 @ 10V	480	TO-247AD (IXFH)	Active
IXFH150N15P	IXYS	150	150	13 @ 500mA, 10V	190 @ 10V	714	TO-247AD (IXFH)	Active
IXFK180N15P	IXYS	150	180	11 @ 90A, 10V	240 @ 10V	830	TO-264AA (IXFK)	Active
IXFR180N15P	IXYS	150	100	13 @ 90A, 10V	240 @ 10V	300	ISOPLUS247™	Active
IXFX180N15P	IXYS	150	180	11 @ 90A, 10V	240 @ 10V	830	PLUS247™-3	Active
IXTK150N15P	IXYS	150	150	13 @ 500mA, 10V	190 @ 10V	714	TO-264 (IXTK)	Active
IXTQ150N15P	IXYS	150	150	13 @ 500mA, 10V	190 @ 10V	714	TO-3P	Active

Engineering Selection Recommendations

Primary Substitute (Manufacturer Recommended): IRFP4568PBF is the manufacturer-recommended substitute from Infineon Technologies. This part maintains the same 150V Vdss rating and exceeds the 105A continuous drain current requirement with 171A capability. The active product status ensures long-term availability and supply chain continuity. The TO-247AC package is mechanically compatible with standard through-hole PCB layouts. Lower on-state resistance (5.9 mOhm) and reduced gate charge (227 nC) provide improved switching performance and reduced power dissipation compared to the obsolete IRFPS3815PBF.

Alternative Substitutes (IXYS HiPerFET™ Series): IXYS devices provide active alternatives with established supply availability. Selection depends on specific application requirements:

IXFH110N15T2: Rated at 110A continuous drain current with 13 mOhm on-state resistance. Suitable for applications requiring current capability near the original 105A specification. TO-247AD package provides standard through-hole mounting.
IXFH150N15P / IXTK150N15P / IXTQ150N15P: All rated at 150A continuous drain current with identical electrical specifications (13 mOhm Rds On, 190 nC gate charge, 714W power dissipation). These parts differ only in package type: TO-247AD, TO-264, and TO-3P respectively. Selection is determined by PCB layout requirements and thermal management strategy.
IXFK180N15P / IXFX180N15P: Both rated at 180A continuous drain current with 11 mOhm on-state resistance and 830W power dissipation. IXFK180N15P uses TO-264AA package; IXFX180N15P uses PLUS247™-3 package. These parts provide maximum current capability and lowest on-state resistance among available substitutes.
IXFR180N15P: Rated at 100A continuous drain current in ISOPLUS247™ package with 300W power dissipation. This part provides the closest current rating match to the original 105A specification with alternative packaging.

Compliance Verification: All substitute parts maintain RoHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and REACH unaffected status. Operating temperature range (-55°C to 175°C) is identical across all options. All parts are classified under ECCN EAR99 and HTSUS 8541.29.0095.

Frequently Asked Questions (FAQ)

Q: Can IRFP4568PBF directly replace IRFPS3815PBF without PCB modifications? A: IRFP4568PBF uses TO-247AC package while IRFPS3815PBF uses SUPER-247™ (TO-274AA). Both are through-hole packages with similar pin configurations, but PCB footprint verification is required. Pin spacing and lead diameter must be confirmed against your PCB design before substitution.

Q: What is the difference between IXFH150N15P, IXTK150N15P, and IXTQ150N15P? A: These three parts have identical electrical specifications (150V, 150A, 13 mOhm Rds On, 190 nC gate charge). The only difference is the package type: IXFH150N15P uses TO-247AD, IXTK150N15P uses TO-264, and IXTQ150N15P uses TO-3P. Selection depends on your PCB layout and thermal management requirements.

Q: Why do some substitutes have lower gate charge than the original IRFPS3815PBF? A: Gate charge (Qg) is provided in the specifications as a measured parameter. Lower gate charge values in substitute parts (such as IRFP4568PBF at 227 nC versus IRFPS3815PBF at 390 nC) indicate improved switching characteristics and reduced driver power requirements. This is a performance advantage, not a compatibility issue.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed maintain RoHS3 compliance status. The original IRFPS3815PBF also carries RoHS3 compliance, ensuring consistency across the substitution options.

Q: Can I use a 180A-rated part (IXFK180N15P or IXFX180N15P) in place of the 105A IRFPS3815PBF? A: Yes. The 180A rating indicates higher continuous drain current capability, which is a superset of the 105A requirement. The 150V Vdss rating, operating temperature range, and all other critical parameters match. The lower on-state resistance (11 mOhm) provides improved performance. PCB layout and thermal management must accommodate the different package type.

Q: What is the difference between IXFR180N15P and other IXYS 150V substitutes? A: IXFR180N15P is rated at 100A continuous drain current (closest to the original 105A) but has lower power dissipation (300W) compared to higher-current alternatives. It uses ISOPLUS247™ package. This part is suitable when current capability near 105A is prioritized and thermal dissipation is a design constraint.

Q: Do all substitute parts have the same gate threshold voltage? A: No. IRFPS3815PBF and most IXYS substitutes specify Vgs(th) at 5V. IXFH110N15T2 specifies 4.5V at 250µA. This minor difference does not affect substitution compatibility, as gate drive circuits typically operate at 10V or higher.

Q: What is the significance of the different Rds On measurement conditions? A: On-state resistance is measured at different current and voltage conditions depending on the manufacturer's test methodology. IRFPS3815PBF specifies Rds On at 63A, 10V (15 mOhm), while IXYS parts typically specify at 500mA or 90A, 10V (13 mOhm). These values are not directly comparable due to different measurement conditions, but all parts meet the 150V, 105A+ electrical requirements for substitution.

Q: Is the SUPER-247™ package interchangeable with TO-247AC? A: Both are through-hole packages with three leads, but they have different physical dimensions and pin spacing. SUPER-247™ (TO-274AA) and TO-247AC are not pin-for-pin compatible. PCB footprint redesign is required when substituting between these package types.

Q: Which substitute offers the best overall performance improvement? A: IRFP4568PBF (manufacturer-recommended) and IXFK180N15P / IXFX180N15P offer the best performance improvements. IRFP4568PBF provides 63% higher current rating (171A vs 105A) with 61% lower on-state resistance (5.9 mOhm vs 15 mOhm) and 42% lower gate charge (227 nC vs 390 nC). IXFK180N15P and IXFX180N15P provide 71% higher current rating with 27% lower on-state resistance. Selection depends on package compatibility with your PCB design.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message