IRLU024N N-Channel MOSFET 55V 17A Equivalent & Substitute Parts

Part Overview

The IRLU024N is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage and 17A continuous drain current in a Through Hole IPAK package. This device is classified as Obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The IRLU024N operates across a wide temperature range from -55°C to 175°C and is suitable for switching applications requiring moderate voltage and current ratings.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	17	A (Tc)
Rds On (Max) @ 10A, 10V	65	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2	V (Max)
Gate Charge (Qg) @ 5V	15	nC (Max)
Power Dissipation (Max)	45	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	—

Substitute Part Grouping Explanation

Substitution of the IRLU024N is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

FET Type: N-Channel (mandatory match)
Drain to Source Voltage (Vdss): Minimum 55V (equal or higher acceptable)
Continuous Drain Current (Id): Minimum 17A (equal or higher acceptable)
Rds On (Max): 65 mOhm @ 10A, 10V or lower (lower values acceptable)
Gate Threshold Voltage (Vgs(th)): 2V maximum @ 250µA
Operating Temperature Range: Minimum -55°C to 175°C (equal or wider acceptable)
Mounting Type: Through Hole (mandatory match)
Package / Case: TO-251-3 Short Leads, IPak, TO-251AA (mandatory match)

Substitute Parts Identified:

IRLU024NPBF (Infineon Technologies) — Parametric Equivalent: Identical electrical specifications with active product status and RoHS3 compliance. Tube packaging.
IRLU024 (Vishay Siliconix) — Manufacturer Recommended: Vdss rated 60V (exceeds 55V requirement), Id rated 14A (below 17A specification), Rds On 100 mOhm (higher than 65 mOhm), operating temperature -55°C to 150°C (narrower range). Active product status.
IRLU024PBF (Vishay Siliconix) — Manufacturer Recommended: Identical electrical specifications to IRLU024, active product status, RoHS3 compliant, tube packaging, REACH Affected designation.
STD12NF06L-1 (STMicroelectronics) — Manufacturer Recommended: Vdss rated 60V (exceeds requirement), Id rated 12A (below 17A specification), Rds On 100 mOhm (higher than 65 mOhm), operating temperature -55°C to 175°C (matches range). Active product status, RoHS3 compliant.

Parameter Comparison

Parameter	IRLU024N	IRLU024NPBF	IRLU024 (Vishay)	IRLU024PBF	STD12NF06L-1
Manufacturer	Infineon	Infineon	Vishay Siliconix	Vishay Siliconix	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active
Vdss (V)	55	55	60	60	60
Id @ 25°C (A)	17	17	14	14	12
Rds On Max @ 10A, 10V (mOhm)	65	65	100	100	100
Vgs(th) Max @ 250µA (V)	2	2	2	2	2
Gate Charge @ 5V (nC)	15	15	18	18	10
Power Dissipation Max (W)	45	45	42	42	42.8
Operating Temperature (°C)	-55 to 175	-55 to 175	-55 to 150	-55 to 150	-55 to 175
Package	TO-251AA	TO-251AA	TO-251AA	TO-251AA	TO-251AA
RoHS Status	Non-compliant	RoHS3 Compliant	Non-compliant	RoHS3 Compliant	RoHS3 Compliant
Moisture Sensitivity (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (Preferred):

IRLU024NPBF is the optimal substitute for IRLU024N. This part maintains identical electrical specifications (55V Vdss, 17A Id, 65 mOhm Rds On) and thermal characteristics (45W power dissipation, -55°C to 175°C operating range). The primary advantage is active product status with RoHS3 compliance, ensuring long-term availability and regulatory alignment. Tube packaging is standard for production quantities.

Alternative Substitutes (Design Trade-offs Required):

IRLU024PBF (Vishay Siliconix) provides identical electrical performance to IRLU024NPBF with active product status and RoHS3 compliance. REACH Affected designation requires compliance verification for specific applications. High inventory availability (15,426 pcs) supports production continuity.

IRLU024 (Vishay Siliconix) and STD12NF06L-1 (STMicroelectronics) represent partial substitutes with reduced current ratings (14A and 12A respectively, versus 17A specification). These parts are suitable only for applications where the 17A continuous drain current is not a hard requirement. Both maintain active product status and RoHS3 compliance. STD12NF06L-1 preserves the full -55°C to 175°C temperature range, while IRLU024 variants are limited to -55°C to 150°C.

Compliance Considerations:

The IRLU024N is RoHS non-compliant. All recommended substitutes (IRLU024NPBF, IRLU024PBF, STD12NF06L-1) are RoHS3 compliant, supporting modern regulatory requirements. IRLU024PBF carries REACH Affected status; applications subject to REACH restrictions require confirmation of applicability.

Frequently Asked Questions (FAQ)

Q: Can IRLU024NPBF directly replace IRLU024N without circuit modifications?

A: Yes. IRLU024NPBF is a parametric equivalent with identical Vdss (55V), Id (17A), Rds On (65 mOhm), gate charge (15 nC), and operating temperature range (-55°C to 175°C). Both use TO-251AA packaging. No circuit modifications are required.

Q: Why do IRLU024 and IRLU024PBF show lower drain current (14A) than the original IRLU024N (17A)?

A: These Vishay Siliconix parts are rated for 14A continuous drain current at 25°C, which is below the IRLU024N specification of 17A. These substitutes are suitable only for applications where peak current demand does not exceed 14A. For designs requiring the full 17A rating, IRLU024NPBF is the appropriate choice.

Q: What is the difference between IRLU024 and IRLU024PBF?

A: Both are Vishay Siliconix parts with identical electrical specifications (60V Vdss, 14A Id, 100 mOhm Rds On). The primary difference is packaging: IRLU024 is supplied in standard packaging, while IRLU024PBF is tube-packaged for production environments. IRLU024PBF carries RoHS3 compliance and REACH Affected designation.

Q: Is STD12NF06L-1 suitable for high-current applications?

A: STD12NF06L-1 is rated for 12A continuous drain current, making it the lowest-rated option among substitutes. It is suitable only for applications where current demand does not exceed 12A. For applications requiring 17A, this part is not recommended.

Q: What are the thermal performance differences between substitutes?

A: IRLU024N and IRLU024NPBF both dissipate 45W (Tc). IRLU024, IRLU024PBF, and STD12NF06L-1 dissipate 42W to 42.8W (Tc), representing a 6.7% reduction. For thermally constrained designs, this difference may be significant. Thermal modeling is recommended for high-power applications.

Q: Are all substitutes available in the same TO-251AA package?

A: Yes. All substitute parts use TO-251-3 Short Leads, IPak, TO-251AA packaging, ensuring mechanical and thermal compatibility with the original IRLU024N footprint.

Q: What is the inventory status of substitute parts?

A: IRLU024NPBF: 86,100 pcs. IRLU024PBF: 15,426 pcs. STD12NF06L-1: 17,195 pcs. IRLU024 (Vishay): 1,110 pcs. All substitutes maintain active production status with substantial inventory availability.

Q: Does RoHS3 compliance affect electrical performance?

A: No. RoHS3 compliance relates to material composition and environmental restrictions, not electrical characteristics. All RoHS3-compliant substitutes maintain identical or superior electrical specifications compared to the non-compliant IRLU024N.

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