IRLU024ZPBF N-Channel MOSFET 55V 16A Equivalent & Substitute Parts

Part Overview

The IRLU024ZPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage and 16A continuous drain current in a Through Hole IPAK package. This device is classified as Obsolete, making substitute parts necessary for new designs and ongoing production requirements. The HEXFET® series device operates across a temperature range of -55°C to 175°C and dissipates up to 35W at the case temperature.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	16	A (Tc)
On-State Resistance (Rds On Max) @ 10V	58	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	3	V
Power Dissipation (Max)	35	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-251-3 Short Leads, IPAK	—
Mounting Type	Through Hole	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the IRLU024ZPBF is determined by compatibility across the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss) must equal or exceed 55V
Continuous Drain Current (Id) must meet or exceed 16A at 25°C
On-State Resistance (Rds On) must not significantly degrade circuit performance
Gate Threshold Voltage (Vgs(th)) must be compatible with existing drive circuitry
Operating temperature range must span -55°C to 175°C minimum

Mechanical Compatibility Criteria:

Package must be Through Hole IPAK (TO-251-3 Short Leads, TO-251AA)
Pin configuration must match TO-251AA standard

Substitute parts are grouped into two categories based on these parameters: Direct Equivalents (matching or exceeding all key specifications) and Functional Alternatives (meeting minimum electrical requirements with acceptable trade-offs in secondary parameters).

Parameter Comparison

Parameter	IRLU024ZPBF (Main)	IRLU024NPBF	IRFU024PBF	IRLU024	IRLU024PBF	STD12NF06L-1
Manufacturer	Infineon	Infineon	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	STMicroelectronics
Vdss (V)	55	55	60	60	60	60
Id @ 25°C (A)	16	17	14	14	14	12
Rds On Max @ 10V (mOhm)	58	65	100	100	100	100
Vgs(th) Max @ 250µA (V)	3	2	4	2	2	2
Power Dissipation Max (W)	35	45	42	42	42	42.8
Operating Temp Range (°C)	-55 to 175	-55 to 175	-55 to 150	-55 to 150	-55 to 150	-55 to 175
Package	TO-251-3, IPAK	TO-251-3, IPAK	TO-251AA	TO-251AA	TO-251AA	TO-251-3, IPAK
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: IRLU024NPBF

The IRLU024NPBF is the preferred substitute for the obsolete IRLU024ZPBF. This Infineon Technologies part maintains the same 55V Vdss rating and HEXFET® series lineage. It provides 17A continuous drain current, exceeding the original 16A specification, and delivers 45W power dissipation versus 35W in the original. The operating temperature range extends to 175°C, matching the main part. Product status is Active with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The TO-251AA package is mechanically compatible with the original IPAK footprint.

Secondary Recommendation: STD12NF06L-1

The STD12NF06L-1 from STMicroelectronics serves as a functional alternative where the 55V Vdss requirement can be relaxed to 60V. This STripFET™ II series device provides 12A continuous drain current and 42.8W power dissipation. The operating temperature range spans -55°C to 175°C, matching the original specification. Product status is Active with ROHS3 compliance. The TO-251-3 IPAK package provides direct mechanical compatibility. This option is suitable for applications where the lower current rating (12A versus 16A) is acceptable.

Alternative Options: IRFU024PBF and IRLU024PBF

The IRFU024PBF and IRLU024PBF both provide 14A continuous drain current at 60V Vdss. Both are packaged in TO-251AA and are Active products. IRFU024PBF is ROHS3 compliant with a maximum operating temperature of 150°C. IRLU024PBF is ROHS3 compliant with REACH Affected status. These options are suitable for applications where 14A current capacity is sufficient and the 150°C upper temperature limit is acceptable.

Not Recommended: IRLU024

The IRLU024 part number (without suffix) is RoHS non-compliant and should not be selected for new designs requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can IRLU024NPBF directly replace IRLU024ZPBF without circuit modifications?

A: Yes. The IRLU024NPBF maintains the same 55V Vdss rating, exceeds the 16A current requirement with 17A capability, and operates across the same -55°C to 175°C temperature range. The TO-251AA package is mechanically compatible with the original IPAK footprint. No circuit modifications are required.

Q: What is the primary reason for substituting the IRLU024ZPBF?

A: The IRLU024ZPBF is classified as Obsolete. Substitute parts are necessary to ensure continued availability for new production and design updates. Active product alternatives guarantee long-term supply chain stability and regulatory compliance.

Q: Are there current rating trade-offs when selecting substitute parts?

A: Yes. The IRLU024NPBF provides 17A (exceeding the original 16A), while IRFU024PBF, IRLU024PBF, and STD12NF06L-1 provide 14A, 14A, and 12A respectively. Applications requiring the full 16A continuous current should select IRLU024NPBF. Lower-current applications may use alternatives with reduced current ratings.

Q: What is the difference between IRFU024PBF and IRLU024PBF?

A: Both parts provide identical electrical specifications: 60V Vdss, 14A continuous drain current, and 100mOhm Rds On. The primary difference is REACH status: IRFU024PBF is REACH Unaffected, while IRLU024PBF is REACH Affected. Both are ROHS3 compliant and packaged in TO-251AA.

Q: Can STD12NF06L-1 be used in applications designed for 16A operation?

A: No. The STD12NF06L-1 provides only 12A continuous drain current, which is 4A below the original 16A specification. This part is suitable only for applications where the lower current rating is acceptable. For full 16A capability, select IRLU024NPBF.

Q: Does the 60V Vdss rating of substitute parts affect compatibility with 55V designs?

A: No. A higher Vdss rating (60V versus 55V) provides additional voltage margin and is fully compatible with circuits designed for 55V operation. The device will operate safely within the lower voltage specification.

Q: What is the operating temperature limitation of IRFU024PBF and IRLU024PBF?

A: Both parts have a maximum operating temperature of 150°C, compared to 175°C for the original IRLU024ZPBF and the recommended IRLU024NPBF. Applications requiring operation above 150°C must use IRLU024NPBF or STD12NF06L-1.

Q: Are all substitute parts available in Tube packaging?

A: IRLU024NPBF, IRFU024PBF, IRLU024PBF, and STD12NF06L-1 are all available in Tube packaging. The original IRLU024ZPBF packaging specification was not provided in the data.

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