IRLU024 N-Channel MOSFET 60V 14A TO-251AA Equivalent & Substitute Parts

Part Overview

The IRLU024 is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 60V drain-to-source voltage with 14A continuous drain current at 25°C. The device is housed in a TO-251AA package and is designed for through-hole mounting applications. The IRLU024 maintains Active product status with 1110 pieces currently in stock.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging or compliance certifications are required, or when design flexibility across multiple manufacturers is needed for supply chain resilience.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	14	A (Tc)
Rds(on) Max @ Id, Vgs	100 mOhm @ 8.4A, 5V	—
Gate Threshold Voltage (Vgs(th)) Max @ Id	2	V @ 250µA
Gate Charge (Qg) Max @ Vgs	18	nC @ 5V
Input Capacitance (Ciss) Max @ Vds	870	pF @ 25V
Power Dissipation Max (Ta/Tc)	2.5W / 42W	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the IRLU024 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss) must equal or exceed 60V
Continuous Drain Current (Id) must meet or exceed 14A at 25°C
Gate Threshold Voltage (Vgs(th)) must be compatible with 2V @ 250µA
On-state resistance (Rds(on)) must not exceed 100 mOhm @ specified conditions
Operating temperature range must encompass -55°C to 150°C minimum

Mechanical Compatibility Criteria:

Package must be TO-251AA or equivalent I-PAK form factor
Mounting type must be Through Hole
Pin configuration must be compatible with TO-251-3 Short Leads standard

Regulatory & Compliance Criteria:

RoHS compliance status (RoHS3 Compliant preferred for new designs)
REACH status documentation
Moisture Sensitivity Level (MSL) rating

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications from the same manufacturer) and Manufacturer Recommended Alternatives (functionally compatible parts from alternative manufacturers with minor parameter variations).

Parameter Comparison

Parameter	IRLU024	IRLU024PBF	SIHLU024-GE3	FQU13N06LTU	FQU13N06LTU-WS	RFD3055LE	STD12NF06L-1
Manufacturer	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	onsemi	onsemi	onsemi	STMicroelectronics
Vdss (V)	60	60	60	60	60	60	60
Id @ 25°C (A)	14	14	14	11	11	11	12
Rds(on) Max (mOhm)	100 @ 8.4A, 5V	100 @ 8.4A, 5V	100 @ 8.4A, 5V	115 @ 5.5A, 10V	115 @ 5.5A, 10V	107 @ 8A, 5V	100 @ 6A, 10V
Vgs(th) Max (V)	2 @ 250µA	2 @ 250µA	2 @ 250µA	2.5 @ 250µA	2.5 @ 250µA	3 @ 250µA	2 @ 250µA
Qg Max (nC)	18 @ 5V	18 @ 5V	18 @ 5V	6.4 @ 5V	6.4 @ 5V	11.3 @ 10V	10 @ 5V
Ciss Max (pF)	870 @ 25V	870 @ 25V	870 @ 25V	350 @ 25V	350 @ 25V	350 @ 25V	350 @ 25V
Power Dissipation (W)	2.5 (Ta) / 42 (Tc)	2.5 (Ta) / 42 (Tc)	2.5 (Ta) / 42 (Tc)	2.5 (Ta) / 28 (Tc)	2.5 (Ta) / 28 (Tc)	38 (Tc)	42.8 (Tc)
Operating Temp Range (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 175	-55 to 175
Package	TO-251AA	TO-251AA	TO-251AA	I-PAK	I-PAK	I-PAK	I-PAK
Product Status	Active	Active	Active	Obsolete	Obsolete	Obsolete	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Equivalent (Recommended for Direct Substitution):

IRLU024PBF is the direct parametric equivalent to IRLU024. Both parts are manufactured by Vishay Siliconix with identical electrical specifications, operating temperature range, and package configuration. IRLU024PBF carries ROHS3 compliance certification, making it suitable for applications requiring regulatory compliance. Inventory availability is significantly higher (15,426 pieces) compared to the base IRLU024 (1,110 pieces), providing supply chain advantages.

Secondary Equivalent (Same Manufacturer, Alternative Variant):

SIHLU024-GE3 is a Logic MOSFET variant from Vishay Siliconix with identical electrical parameters to IRLU024. This part is ROHS3 compliant and carries REACH Unaffected status. Inventory is available at 3,081 pieces. This part is suitable when the Logic MOSFET designation is required by design specifications.

Manufacturer Recommended Alternatives (Cross-Manufacturer Substitutes):

FQU13N06LTU and FQU13N06LTU-WS are onsemi QFET® series alternatives with 60V Vdss rating. These parts operate at 11A continuous drain current, which is lower than the IRLU024's 14A rating. Both parts are marked as Obsolete product status. Gate charge is significantly lower (6.4 nC versus 18 nC), and input capacitance is reduced (350 pF versus 870 pF). These characteristics may affect switching performance in applications sensitive to gate drive requirements. FQU13N06LTU-WS has higher inventory availability (35,321 pieces).

RFD3055LE is an onsemi alternative rated for 11A continuous drain current with 60V Vdss. This part features extended operating temperature range (-55°C to 175°C) and higher power dissipation capability (38W Tc). Product status is Obsolete. Rds(on) is 107 mOhm at 8A, 5V, which is comparable to IRLU024. Gate threshold voltage is elevated to 3V @ 250µA.

STD12NF06L-1 is an STMicroelectronics STripFET™ II series part rated for 12A continuous drain current at 60V Vdss. This part maintains Active product status and carries ROHS3 compliance. Operating temperature range extends to 175°C. Rds(on) is 100 mOhm @ 6A, 10V. Gate charge is 10 nC @ 5V, and input capacitance is 350 pF. Inventory availability is 17,195 pieces. This part is suitable for applications where higher temperature operation or active product status is required.

Compliance Considerations:

For new designs requiring RoHS3 compliance, IRLU024PBF, SIHLU024-GE3, or STD12NF06L-1 are appropriate selections. The base IRLU024 is RoHS non-compliant and should be reserved for legacy system maintenance or applications where compliance is not mandated.

Frequently Asked Questions (FAQ)

Q: Can IRLU024PBF be used as a direct replacement for IRLU024?

A: Yes. IRLU024PBF is a parametric equivalent with identical electrical specifications, operating temperature range, and TO-251AA package configuration. The primary difference is packaging format (Tube versus unspecified) and RoHS3 compliance certification. Pin-for-pin compatibility is confirmed.

Q: What is the difference between IRLU024 and SIHLU024-GE3?

A: Both parts are manufactured by Vishay Siliconix with identical electrical parameters and operating characteristics. SIHLU024-GE3 is designated as a Logic MOSFET variant. Both are rated for 60V, 14A, with 100 mOhm Rds(on). Selection between these parts depends on design documentation requirements specifying Logic MOSFET designation.

Q: Why do onsemi alternatives (FQU13N06LTU, FQU13N06LTU-WS) have lower drain current ratings?

A: The onsemi QFET® series alternatives are rated for 11A continuous drain current compared to IRLU024's 14A. These parts are suitable for applications where the required drain current does not exceed 11A. Applications requiring the full 14A capability must use IRLU024, IRLU024PBF, SIHLU024-GE3, or STD12NF06L-1.

Q: Are the onsemi alternatives (FQU13N06LTU, FQU13N06LTU-WS, RFD3055LE) still available for new designs?

A: These parts carry Obsolete product status. While inventory is currently available (19,870 and 35,321 pieces respectively), obsolete designation indicates these parts are no longer in active production. New designs should prioritize Active status parts: IRLU024PBF, SIHLU024-GE3, or STD12NF06L-1.

Q: What are the key differences between STD12NF06L-1 and IRLU024?

A: STD12NF06L-1 is rated for 12A continuous drain current (versus IRLU024's 14A), features extended operating temperature range to 175°C (versus 150°C), and maintains Active product status with ROHS3 compliance. Rds(on) is 100 mOhm @ 6A, 10V. Gate charge is lower at 10 nC @ 5V. This part is suitable for applications requiring higher temperature operation or active product availability.

Q: Can I use a substitute part with lower drain current rating in my application?

A: Substitution with lower drain current ratings is permissible only if the application's actual operating drain current does not exceed the substitute part's rating. Design margin analysis must confirm that peak and continuous drain currents remain within the substitute part's specifications. Thermal analysis must account for any differences in power dissipation ratings.

Q: What is the significance of gate charge (Qg) differences between parts?

A: Gate charge affects gate drive circuit requirements and switching speed. IRLU024 has 18 nC @ 5V, while onsemi alternatives have 6.4 nC @ 5V. Lower gate charge reduces gate drive power requirements and may increase switching frequency capability. Gate drive circuits designed for IRLU024's 18 nC specification will operate with onsemi alternatives but may not optimize switching performance. Verification of gate drive compatibility is necessary for high-frequency applications.

Q: Are all substitute parts compatible with the same PCB layout?

A: All listed substitute parts use TO-251AA or equivalent I-PAK package with TO-251-3 Short Leads configuration. Pin assignments are identical. PCB layouts designed for IRLU024 are mechanically and electrically compatible with all listed substitutes. No layout modifications are required for package compatibility.

Q: Which substitute part should I select for maximum supply chain availability?

A: FQU13N06LTU-WS offers the highest current inventory at 35,321 pieces. However, this part carries Obsolete status. For Active status parts with high availability, IRLU024PBF (15,426 pieces) and STD12NF06L-1 (17,195 pieces) are preferred selections.

Q: What is the impact of RoHS compliance on part selection?

A: IRLU024 is RoHS non-compliant. Applications subject to RoHS3 regulations must use IRLU024PBF, SIHLU024-GE3, or STD12NF06L-1. All onsemi alternatives (FQU13N06LTU, FQU13N06LTU-WS, RFD3055LE) are ROHS3 compliant. Compliance requirements should be verified against applicable regulations and customer specifications before part selection.

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