IRFP244 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRFP244 is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 250V drain-to-source voltage and 15A continuous drain current at 25°C. The device is housed in a TO-247-3 through-hole package and dissipates up to 150W at the case temperature. The IRFP244 is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and component procurement. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the through-hole TO-247AC package format.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	250	V
Continuous Drain Current (Id) @ 25°C	15	A (Tc)
Drive Voltage (Max Rds On)	10	V
Rds On (Max) @ Id, Vgs	280	mOhm @ 9A, 10V
Power Dissipation (Max)	150	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-247-3	Through Hole
Gate Charge (Qg) @ 10V	63	nC
Input Capacitance (Ciss) @ 25V	1400	pF

Substitute Part Grouping Explanation

Substitute parts for the IRFP244 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (Pin-Compatible Replacement): Parts that maintain identical electrical specifications and package format, enabling direct substitution without circuit modification.

Manufacturer-Recommended Upgrade (Enhanced Performance): Parts that exceed the IRFP244 specifications in current rating, power dissipation, and thermal performance while maintaining the same voltage class and package footprint. These parts are suitable for applications where the original specifications are met or exceeded.

Substitution eligibility is determined by the following criteria:

Drain-to-Source Voltage (Vdss) equal to or greater than 250V
Continuous Drain Current (Id) equal to or greater than 15A at 25°C
Package format: TO-247-3 through-hole configuration
Gate drive voltage compatibility at 10V
Operating temperature range encompassing -55°C to 150°C minimum
RoHS3 compliance for new designs

Parameter Comparison

Parameter	IRFP244	IRFP244PBF	IRFP4229PBF
Manufacturer	Vishay Siliconix	Vishay Siliconix	Infineon Technologies
Product Status	Obsolete	Active	Active
Drain to Source Voltage (Vdss)	250 V	250 V	250 V
Continuous Drain Current (Id) @ 25°C	15 A (Tc)	15 A (Tc)	44 A (Tc)
Drive Voltage (Max Rds On)	10 V	10 V	10 V
Rds On (Max) @ Id, Vgs	280 mOhm @ 9A, 10V	280 mOhm @ 9A, 10V	46 mOhm @ 26A, 10V
Power Dissipation (Max)	150 W (Tc)	150 W (Tc)	310 W (Tc)
Operating Temperature Range	-55 to 150 °C (TJ)	-55 to 150 °C (TJ)	-40 to 175 °C (TJ)
Package / Case	TO-247-3	TO-247-3	TO-247-3
Gate Charge (Qg) @ 10V	63 nC	63 nC	110 nC
Input Capacitance (Ciss) @ 25V	1400 pF	1400 pF	4560 pF
Vgs (Max)	±20 V	±20 V	±30 V
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	-	Tube	Tube

Engineering Selection Recommendations

IRFP244PBF (Direct Equivalent): This part is the active production equivalent of the IRFP244, manufactured by Vishay Siliconix with identical electrical specifications and package configuration. The IRFP244PBF is ROHS3 compliant and suitable for direct replacement in existing designs. This part maintains the same drain current rating (15A), power dissipation (150W), and on-resistance characteristics. Selection of IRFP244PBF is appropriate for applications requiring exact electrical and thermal performance matching.

IRFP4229PBF (Manufacturer-Recommended Upgrade): This Infineon Technologies HEXFET device provides enhanced performance specifications while maintaining the 250V voltage class and TO-247-3 package format. The IRFP4229PBF delivers 44A continuous drain current and 310W power dissipation, representing a significant increase over the IRFP244 baseline. The lower on-resistance (46 mOhm @ 26A, 10V) reduces conduction losses. The extended operating temperature range (-40°C to 175°C) and higher gate voltage rating (±30V) provide additional design margin. The IRFP4229PBF is ROHS3 compliant and actively produced. This part is suitable for applications where the original 15A specification is adequate but where improved thermal performance or lower losses are beneficial. Higher gate charge (110 nC) and input capacitance (4560 pF) require verification of gate drive circuit capability.

Both substitute parts are through-hole mounted in TO-247-3 packages and are compatible with existing PCB layouts designed for the IRFP244.

Frequently Asked Questions (FAQ)

Q: Can the IRFP244PBF be used as a direct replacement for the IRFP244?

A: Yes. The IRFP244PBF is electrically and mechanically identical to the IRFP244, with the same drain current (15A), voltage rating (250V), power dissipation (150W), and package format (TO-247-3). The primary difference is product status: IRFP244PBF is active production while IRFP244 is obsolete. IRFP244PBF is ROHS3 compliant, making it suitable for new designs and ongoing procurement.

Q: What are the advantages of using the IRFP4229PBF over the IRFP244PBF?

A: The IRFP4229PBF provides higher current capacity (44A versus 15A), greater power dissipation capability (310W versus 150W), and lower on-resistance (46 mOhm versus 280 mOhm). These characteristics reduce conduction losses and improve thermal performance in high-current applications. The extended operating temperature range (-40°C to 175°C) provides additional design margin. However, the IRFP4229PBF has higher gate charge (110 nC versus 63 nC) and input capacitance (4560 pF versus 1400 pF), which may require gate drive circuit evaluation.

Q: Are the IRFP244PBF and IRFP4229PBF pin-compatible with the IRFP244?

A: Yes. Both substitute parts use the TO-247-3 through-hole package with identical pin configuration and PCB footprint. No layout modifications are required for either substitute.

Q: Can the IRFP4229PBF be used in applications designed for the IRFP244?

A: Yes. The IRFP4229PBF meets or exceeds all electrical specifications of the IRFP244 (250V Vdss, 15A minimum Id, 150W minimum power dissipation). The higher performance characteristics do not create incompatibility. Gate drive circuit verification is necessary to confirm that the higher gate charge and input capacitance are accommodated by the existing drive circuit.

Q: What is the difference between IRFP244 and IRFP244PBF?

A: The IRFP244 is obsolete; IRFP244PBF is the active production equivalent. Both share identical electrical specifications and package format. IRFP244PBF is ROHS3 compliant. The "PBF" suffix indicates lead-free (Pb-free) construction and RoHS compliance.

Q: Are there any thermal considerations when substituting these parts?

A: The IRFP244 and IRFP244PBF have identical thermal specifications (150W max dissipation, -55°C to 150°C operating range). The IRFP4229PBF has higher power dissipation capability (310W) and extended temperature range (-40°C to 175°C), which may reduce thermal stress in high-power applications. Thermal design should be verified based on actual circuit operating conditions.

Q: What compliance certifications apply to these parts?

A: IRFP244 is RoHS non-compliant. IRFP244PBF and IRFP4229PBF are both ROHS3 compliant. All three parts are REACH unaffected and classified as EAR99 for export control purposes.

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