IRLR024NPBF N-Channel 55V 17A MOSFET Equivalent & Substitute Parts

Part Overview

The IRLR024NPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage and 17A continuous drain current in a surface mount DPAK package. This device is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement. The part operates across a temperature range of -55°C to 175°C and is RoHS3 compliant with unlimited moisture sensitivity rating.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	55	V
Continuous Drain Current @ 25°C (Id)	17	A (Tc)
On-Resistance @ 10A, 10V (Rds On)	65	mOhm
Gate Threshold Voltage @ 250µA (Vgs(th))	2	V
Gate Charge @ 5V (Qg)	15	nC
Power Dissipation (Tc)	45	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-252-3 DPAK	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the IRLR024NPBF is determined by the following critical parameters:

Voltage Rating Compatibility: Substitute parts must have Vdss ≥ 55V to maintain voltage margin. Parts rated at 60V satisfy this requirement.

Current Handling Capacity: Substitute parts must support continuous drain current ≥ 17A at 25°C (Tc rating) to handle the original design current without thermal derating.

On-Resistance (Rds On): Lower Rds On values reduce power dissipation and heat generation. Acceptable substitutes maintain Rds On ≤ 100mOhm at rated conditions to preserve thermal performance.

Package Compatibility: All substitutes must use TO-252-3 DPAK surface mount package to ensure PCB footprint compatibility without layout redesign.

Temperature Range: Operating temperature range must span -55°C to 175°C minimum to match the original specification.

Compliance Requirements: RoHS3 compliance is preferred for new designs; non-compliant parts are identified for legacy applications only.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Power Diss. (W)	Temp Range (°C)	RoHS Status	Product Status
IRLR024NPBF	Infineon	55	17 (Tc)	65 @ 10A, 10V	2	15 @ 5V	45 (Tc)	-55 to 175	ROHS3	Discontinued
AOD444	Alpha & Omega	60	12 (Tc)	60 @ 12A, 10V	3	10 @ 10V	20 (Tc)	-55 to 175	ROHS3	Active
DMN6068LK3-13	Diodes Inc.	60	6 (Ta)	68 @ 12A, 10V	3	10.3 @ 10V	2.12 (Ta)	-55 to 150	ROHS3	Active
IRLR024	Vishay	60	14 (Tc)	100 @ 8.4A, 5V	2	18 @ 5V	42 (Tc)	-55 to 150	Non-compliant	Active
IRLR024TR	Vishay	60	14 (Tc)	100 @ 8.4A, 5V	2	18 @ 5V	42 (Tc)	-55 to 150	Non-compliant	Active
IRLR024TRL	Vishay	60	14 (Tc)	100 @ 8.4A, 5V	2	18 @ 5V	42 (Tc)	-55 to 150	Non-compliant	Active
IRLR024TRR	Vishay	60	14 (Tc)	100 @ 8.4A, 5V	2	18 @ 5V	42 (Tc)	-55 to 150	Non-compliant	Active
STD16NF06LT4	STMicroelectronics	60	24 (Tc)	70 @ 8A, 10V	1	7.5 @ 5V	40 (Tc)	-55 to 175	ROHS3	Active
STD20NF06LT4	STMicroelectronics	60	24 (Tc)	40 @ 12A, 10V	2.5	13 @ 10V	60 (Tc)	-55 to 175	ROHS3	Active
STD20NF06T4	STMicroelectronics	60	24 (Tc)	40 @ 12A, 10V	4	31 @ 10V	60 (Tc)	-55 to 175	ROHS3	Active

Engineering Selection Recommendations

Primary Substitutes (RoHS3 Compliant, Active Status):

STD20NF06LT4 and STD20NF06T4 from STMicroelectronics are the preferred substitutes. Both devices exceed the original 17A continuous drain current specification with 24A (Tc) rating, provide superior on-resistance performance (40mOhm), and maintain the full -55°C to 175°C operating temperature range. These parts are RoHS3 compliant and actively manufactured, ensuring long-term availability.

STD16NF06LT4 provides an alternative with 24A continuous current capability, lower gate charge (7.5nC), and full temperature range support. This part is suitable for applications where gate drive optimization is critical.

Secondary Substitutes (Active Status, Compliance Considerations):

AOD444 from Alpha & Omega Semiconductor is RoHS3 compliant and active. However, the 12A (Tc) continuous current rating is below the original 17A specification. This part is suitable only for applications where actual circuit current demand is ≤ 12A.

IRLR024, IRLR024TR, IRLR024TRL, and IRLR024TRR from Vishay are active alternatives with 14A continuous current capability. These parts are not RoHS3 compliant and have reduced maximum operating temperature (150°C vs. 175°C). Use is restricted to legacy applications or where RoHS compliance is not required.

Not Recommended:

DMN6068LK3-13 from Diodes Incorporated has insufficient continuous current rating (6A Ta) and reduced maximum operating temperature (150°C). This part does not meet the original design current requirements.

Frequently Asked Questions (FAQ)

Q: Can AOD444 directly replace IRLR024NPBF in all applications?

A: AOD444 is suitable only if the actual circuit drain current does not exceed 12A (Tc). The original IRLR024NPBF is rated for 17A, so AOD444 cannot be used in designs requiring the full 17A capability. Verify actual circuit current before substitution.

Q: What is the difference between IRLR024, IRLR024TR, IRLR024TRL, and IRLR024TRR?

A: These are packaging variants of the same die with identical electrical specifications. The suffix designates different tape-and-reel configurations. All four variants have 14A continuous current and are not RoHS3 compliant. Electrical performance is identical across all variants.

Q: Why do STD20NF06LT4 and STD20NF06T4 have different gate threshold voltages?

A: STD20NF06LT4 has Vgs(th) of 2.5V, while STD20NF06T4 has 4V. This difference affects gate drive requirements. STD20NF06LT4 requires lower gate voltage for full conduction and is preferred for low-voltage gate drive circuits. STD20NF06T4 is suitable for standard 5V or 10V gate drive schemes.

Q: Is the DPAK package identical across all substitute parts?

A: All substitute parts use TO-252-3 DPAK (SC-63) package with identical pinout and footprint. Direct PCB substitution is possible without layout modification.

Q: Can I use STD16NF06LT4 instead of STD20NF06LT4?

A: Yes, both are RoHS3 compliant and active. STD16NF06LT4 has slightly higher on-resistance (70mOhm vs. 40mOhm) and lower power dissipation rating (40W vs. 60W). Choose STD16NF06LT4 if thermal dissipation is not critical; choose STD20NF06LT4 for higher power applications.

Q: What is the impact of higher gate charge on circuit design?

A: Higher gate charge (Qg) increases the energy required to switch the MOSFET and may require stronger gate drive circuits. STD20NF06T4 has 31nC gate charge compared to 15nC in the original IRLR024NPBF. Verify gate driver capability before substitution in high-frequency switching applications.

Q: Are all substitute parts available in the same packaging options?

A: Packaging availability varies by manufacturer. STMicroelectronics parts (STD series) are available in Cut Tape and Digi-Reel. AOD444 is available in Cut Tape and Digi-Reel. Vishay IRLR024 variants have limited packaging information. Confirm packaging availability with your supplier before design finalization.

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