IRFP264 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRFP264 is an N-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) manufactured by Vishay Siliconix, rated for 250V drain-to-source voltage and 38A continuous drain current. The device is packaged in a TO-247-3 through-hole configuration and is rated for 280W maximum power dissipation. The IRFP264 is classified as obsolete, necessitating identification of equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating modern RoHS compliance requirements.

Key Parameters

Parameter	IRFP264 (Main Part)
Manufacturer	Vishay Siliconix
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)
Drain-to-Source Voltage (Vdss)	250 V
Continuous Drain Current (Id) @ 25°C	38 A (Tc)
Drive Voltage (Max Rds On)	10 V
Rds On (Max) @ Id, Vgs	75 mOhm @ 23A, 10V
Gate Threshold Voltage Vgs(th) (Max) @ Id	4 V @ 250 µA
Gate Charge (Qg) (Max) @ Vgs	210 nC @ 10 V
Maximum Gate Voltage (Vgs)	±20 V
Input Capacitance (Ciss) (Max) @ Vds	5400 pF @ 25 V
Power Dissipation (Max)	280 W (Tc)
Operating Temperature Range	-55°C to 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-247-3
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the IRFP264 are selected based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Minimum 250V (equal or higher acceptable)
Continuous Drain Current (Id): Minimum 38A (equal or higher acceptable)
Package Type: TO-247-3 through-hole configuration
Gate Drive Voltage: 10V maximum Rds On specification
Operating Temperature Range: Minimum -55°C to 150°C (equal or wider acceptable)
Mounting Type: Through Hole

Secondary Compatibility Factors:

RoHS Compliance: Active product status with modern compliance preferred
Gate Charge (Qg): Lower values indicate improved switching performance
On-Resistance (Rds On): Lower values indicate reduced conduction losses
Power Dissipation Capability: Equal or higher ratings acceptable

Substitutes are grouped into two categories: direct equivalents (identical electrical ratings) and functional equivalents (higher ratings within the same package family).

Parameter Comparison

Parameter	IRFP264	IRFP264PBF	IRFP4229PBF	IXFH40N30	IXFH50N30Q3
Manufacturer	Vishay Siliconix	Vishay Siliconix	Infineon Technologies	IXYS	IXYS
Drain-to-Source Voltage (Vdss)	250 V	250 V	250 V	300 V	300 V
Continuous Drain Current (Id) @ 25°C	38 A (Tc)	38 A (Tc)	44 A (Tc)	40 A (Tc)	50 A (Tc)
Drive Voltage (Max Rds On)	10 V	10 V	10 V	10 V	10 V
Rds On (Max) @ Id, Vgs	75 mOhm @ 23A, 10V	75 mOhm @ 23A, 10V	46 mOhm @ 26A, 10V	85 mOhm @ 500mA, 10V	80 mOhm @ 25A, 10V
Gate Threshold Voltage Vgs(th) (Max) @ Id	4 V @ 250 µA	4 V @ 250 µA	5 V @ 250 µA	4 V @ 4 mA	6.5 V @ 4 mA
Gate Charge (Qg) (Max) @ Vgs	210 nC @ 10 V	210 nC @ 10 V	110 nC @ 10 V	200 nC @ 10 V	65 nC @ 10 V
Maximum Gate Voltage (Vgs)	±20 V	±20 V	±30 V	±20 V	±20 V
Input Capacitance (Ciss) (Max) @ Vds	5400 pF @ 25 V	5400 pF @ 25 V	4560 pF @ 25 V	4800 pF @ 25 V	3160 pF @ 25 V
Power Dissipation (Max)	280 W (Tc)	280 W (Tc)	310 W (Tc)	300 W (Tc)	690 W (Tc)
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	-40°C to 175°C (TJ)	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

IRFP264PBF (Direct Equivalent - Preferred for Pin-Compatible Replacement)

The IRFP264PBF is the direct successor to the IRFP264, manufactured by Vishay Siliconix. This part maintains identical electrical specifications including 250V Vdss, 38A continuous drain current, and 280W power dissipation. The IRFP264PBF is classified as Active product status with ROHS3 compliance, addressing the obsolescence of the original IRFP264. Inventory availability is substantial at 21,080 pieces. This part is the primary recommendation for direct replacement in existing designs without circuit modification.

IRFP4229PBF (Functional Equivalent - Enhanced Performance)

The IRFP4229PBF, manufactured by Infineon Technologies, provides enhanced electrical performance while maintaining 250V Vdss compatibility. This part offers 44A continuous drain current (6A higher than IRFP264), 310W power dissipation (30W higher), and significantly reduced gate charge of 110 nC compared to 210 nC. The IRFP4229PBF features an extended operating temperature range to 175°C and is ROHS3 compliant with Active product status. This part is suitable for applications requiring improved thermal performance and reduced switching losses. Inventory availability is 26,400 pieces.

IXFH40N30 (Functional Equivalent - Higher Voltage Rating)

The IXFH40N30, manufactured by IXYS, provides a 300V Vdss rating (50V higher than IRFP264) with 40A continuous drain current and 300W power dissipation. This part is suitable for applications where higher voltage margin is required. The IXFH40N30 is ROHS3 compliant with Active product status. Inventory availability is 1,108 pieces. This part is recommended for designs requiring enhanced voltage headroom.

IXFH50N30Q3 (Functional Equivalent - Maximum Performance)

The IXFH50N30Q3, manufactured by IXYS, provides the highest performance specifications with 300V Vdss, 50A continuous drain current, and 690W power dissipation. This part features the lowest gate charge of 65 nC and lowest input capacitance of 3,160 pF, resulting in superior switching performance and reduced driver requirements. The IXFH50N30Q3 is ROHS3 compliant with Active product status and Q3 Class designation. Inventory availability is 3,290 pieces. This part is recommended for high-efficiency applications where thermal performance and switching speed are critical.

Frequently Asked Questions (FAQ)

Q: Can IRFP264PBF be used as a direct replacement for IRFP264?

A: Yes. The IRFP264PBF is electrically and mechanically identical to the IRFP264, with identical Vdss (250V), Id (38A), Rds On (75 mOhm @ 23A, 10V), and power dissipation (280W). The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modifications are required.

Q: What are the key differences between IRFP264 and IRFP4229PBF?

A: The IRFP4229PBF maintains the same 250V Vdss rating but provides higher continuous drain current (44A vs. 38A), higher power dissipation (310W vs. 280W), and significantly lower gate charge (110 nC vs. 210 nC). The IRFP4229PBF also features an extended operating temperature range to 175°C and higher maximum gate voltage (±30V vs. ±20V). These enhancements result in improved thermal performance and reduced switching losses.

Q: Why do IXFH40N30 and IXFH50N30Q3 have higher Vdss ratings than IRFP264?

A: The IXYS parts are rated for 300V Vdss compared to 250V for the IRFP264. Higher voltage ratings provide additional safety margin in applications subject to voltage transients or overshoot conditions. These parts are functionally compatible with 250V applications and provide enhanced reliability through increased voltage headroom.

Q: Are all substitute parts available in the same TO-247-3 package?

A: Yes. All substitute parts listed are packaged in TO-247-3 through-hole configuration, ensuring mechanical compatibility with existing PCB layouts and socket designs. The TO-247AC and TO-247AD designations refer to internal pin configurations within the TO-247-3 family and do not affect external mounting or lead spacing.

Q: What is the significance of RoHS compliance for substitute part selection?

A: RoHS compliance indicates conformance to Restriction of Hazardous Substances regulations. The original IRFP264 is RoHS non-compliant, while all substitute parts are ROHS3 compliant. For new designs and production requiring regulatory compliance, ROHS3-compliant substitutes are mandatory. For legacy system maintenance, non-compliant parts may be acceptable depending on application and regional requirements.

Q: How does gate charge affect circuit design when substituting parts?

A: Gate charge (Qg) determines the total charge required to switch the MOSFET from off to on state. Lower gate charge reduces driver power requirements and enables faster switching. The IRFP4229PBF (110 nC) and IXFH50N30Q3 (65 nC) have significantly lower gate charge than IRFP264 (210 nC), allowing use of lower-power gate drivers and reducing switching losses. Existing gate driver circuits designed for 210 nC will operate with lower-charge parts without modification.

Q: What is the difference between continuous drain current (Id) and peak current capability?

A: Continuous drain current (Id) is the maximum current the device can conduct indefinitely at the specified temperature without exceeding maximum junction temperature. All substitute parts meet or exceed the 38A continuous drain current requirement of the IRFP264. Peak or pulsed current capability is higher but is not specified in the provided parameters and should not be used for continuous operation design.

Q: Can IXFH50N30Q3 be used in all applications where IRFP264 is specified?

A: Yes. The IXFH50N30Q3 meets all minimum electrical requirements of the IRFP264 (250V Vdss, 38A Id, 280W dissipation) with enhanced performance specifications. The higher ratings (300V, 50A, 690W) provide additional design margin. The identical TO-247-3 package ensures mechanical compatibility. No circuit modifications are required for substitution.

Q: What inventory considerations should guide substitute part selection?

A: IRFP264PBF has the highest inventory availability at 21,080 pieces, making it the most readily available direct equivalent. IRFP4229PBF has 26,400 pieces available. IXFH50N30Q3 has 3,290 pieces, and IXFH40N30 has 1,108 pieces. For applications requiring immediate availability, IRFP264PBF or IRFP4229PBF are preferred. For long-term supply chain planning, all parts have sufficient inventory for production requirements.

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