IRLR024NTRR N-Channel 55V 17A MOSFET DPAK Equivalent & Substitute Parts

Part Overview

The IRLR024NTRR is an N-Channel MOSFET manufactured by Infineon Technologies in the HEXFET® series, rated for 55V drain-to-source voltage and 17A continuous drain current at 25°C in a Surface Mount TO-252AA (DPAK) package. This device is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. The part operates across a temperature range of -55°C to 175°C and dissipates up to 45W at the case temperature.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	17	A (Tc)
On-State Resistance (Rds On) @ 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)
Package Type	TO-252-3 (DPAK)	Surface Mount
RoHS Status	Non-compliant	—

Substitute Part Grouping Explanation

Substitution of the IRLR024NTRR is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Minimum 55V required
Continuous Drain Current (Id): Minimum 17A at 25°C
On-State Resistance (Rds On): Comparable performance at specified gate voltage
Package Type: TO-252-3 (DPAK) Surface Mount
FET Type: N-Channel MOSFET
Technology: Metal Oxide Semiconductor

Substitution Categories:

Category 1: Parametric Equivalent (Identical Electrical Specifications) Parts meeting all primary criteria with matching or superior electrical performance and identical package configuration.

Category 2: Manufacturer Recommended Substitutes (Functional Equivalents) Parts with higher voltage or current ratings, improved performance characteristics, or enhanced compliance status that function as direct replacements within the same package family.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Package	Status	RoHS
IRLR024NTRR	Infineon	55	17 (Tc)	65 @ 10A, 10V	15 @ 5V	TO-252-3 (DPAK)	Obsolete	Non-compliant
IRLR024NTRPBF	Infineon	55	17 (Tc)	65 @ 10A, 10V	15 @ 5V	TO-252-3 (DPAK)	Active	ROHS3 Compliant
AOD444	Alpha & Omega Semiconductor	60	12 (Tc)	60 @ 12A, 10V	10 @ 10V	TO-252 (DPAK)	Active	ROHS3 Compliant
IRLR024	Vishay Siliconix	60	14 (Tc)	100 @ 8.4A, 5V	18 @ 5V	TO-252-3 (DPAK)	Active	Non-compliant
IRLR024TR	Vishay Siliconix	60	14 (Tc)	100 @ 8.4A, 5V	18 @ 5V	TO-252-3 (DPAK)	Active	Non-compliant
IRLR024TRL	Vishay Siliconix	60	14 (Tc)	100 @ 8.4A, 5V	18 @ 5V	TO-252-3 (DPAK)	Active	Non-compliant
IRLR024TRR	Vishay Siliconix	60	14 (Tc)	100 @ 8.4A, 5V	18 @ 5V	TO-252-3 (DPAK)	Active	Non-compliant
NTD20N06LT4G	onsemi	60	20 (Ta)	48 @ 10A, 5V	32 @ 5V	TO-252-3 (DPAK)	Obsolete	ROHS3 Compliant
STD16NF06LT4	STMicroelectronics	60	24 (Tc)	70 @ 8A, 10V	7.5 @ 5V	TO-252-3 (DPAK)	Active	ROHS3 Compliant
STD20NF06LT4	STMicroelectronics	60	24 (Tc)	40 @ 12A, 10V	13 @ 10V	TO-252-3 (DPAK)	Active	ROHS3 Compliant
STD20NF06T4	STMicroelectronics	60	24 (Tc)	40 @ 12A, 10V	31 @ 10V	TO-252-3 (DPAK)	Active	ROHS3 Compliant

Engineering Selection Recommendations

First Priority: IRLR024NTRPBF

The IRLR024NTRPBF is the direct parametric equivalent to the IRLR024NTRR, offering identical electrical specifications across all critical parameters: 55V Vdss, 17A continuous drain current, 65mOhm Rds On, and 15nC gate charge. The primary distinction is product status and compliance: IRLR024NTRPBF is Active and ROHS3 Compliant, whereas the original part is Obsolete and RoHS non-compliant. This part is supplied in Cut Tape and Digi-Reel® packaging with 77,400 units in stock, providing superior availability and regulatory compliance for new designs and production continuity.

Second Priority: STD20NF06LT4

The STD20NF06LT4 from STMicroelectronics (STripFET™ II series) provides enhanced performance with 60V Vdss, 24A continuous drain current, and superior on-state resistance of 40mOhm at 12A/10V. Power dissipation reaches 60W at case temperature, exceeding the original 45W specification. This part is Active, ROHS3 Compliant, and available in high volume (2,220 units). The increased current rating and improved Rds On make this suitable for applications requiring higher performance margins.

Third Priority: STD16NF06LT4

The STD16NF06LT4 offers 60V Vdss and 24A continuous drain current with 70mOhm Rds On at 8A/10V. This part is Active, ROHS3 Compliant, and available in substantial quantity (17,100 units). The STripFET™ II technology provides lower gate charge (7.5nC) compared to the original part, reducing switching losses in high-frequency applications.

Alternative Consideration: AOD444

The AOD444 from Alpha & Omega Semiconductor provides 60V Vdss with 12A continuous drain current at case temperature and 60mOhm Rds On. This part is Active and ROHS3 Compliant with 120,100 units in stock. The lower current rating (12A vs. 17A) restricts its use to applications with reduced current demands.

Vishay Siliconix IRLR024 Variants (IRLR024, IRLR024TR, IRLR024TRL, IRLR024TRR)

These parts share the IRLR024 base product number but operate at 60V Vdss with 14A continuous drain current. All variants are Active but RoHS non-compliant. The higher on-state resistance (100mOhm at 8.4A/5V) and increased gate charge (18nC) represent performance degradation compared to the original IRLR024NTRR. These are suitable only when RoHS compliance is not required and higher voltage tolerance is acceptable.

Obsolete Status Consideration: NTD20N06LT4G

The NTD20N06LT4G from onsemi is classified as Obsolete despite being ROHS3 Compliant. Although it offers superior current rating (20A) and lower Rds On (48mOhm), its obsolete status limits long-term procurement viability. This part should be considered only when immediate availability from existing inventory is critical.

Frequently Asked Questions (FAQ)

Q1: Can IRLR024NTRPBF be used as a direct replacement for IRLR024NTRR?

Yes. IRLR024NTRPBF is the parametric equivalent with identical electrical specifications: 55V Vdss, 17A continuous drain current, 65mOhm Rds On, and 15nC gate charge. The only differences are packaging format (Cut Tape/Digi-Reel® vs. Tape & Reel) and compliance status (ROHS3 Compliant vs. RoHS non-compliant). Both use the TO-252-3 (DPAK) package. Electrical performance is identical.

Q2: Why do STMicroelectronics STD20NF06LT4 and STD16NF06LT4 have higher current ratings than the original IRLR024NTRR?

The STMicroelectronics parts operate at 60V Vdss compared to the original 55V specification. The higher voltage rating allows these devices to handle increased current (24A vs. 17A) while maintaining comparable or superior on-state resistance. These represent performance upgrades suitable for applications requiring higher current capacity or improved thermal performance.

Q3: What is the significance of on-state resistance (Rds On) differences between substitute parts?

On-state resistance directly affects power dissipation and thermal performance. Lower Rds On values reduce I²R losses during conduction. For example, STD20NF06LT4 at 40mOhm provides superior efficiency compared to IRLR024NTRR at 65mOhm. However, Rds On is measured at different gate voltages across parts (5V, 10V), requiring normalized comparison at equivalent operating conditions.

Q4: Are all substitute parts available in the same TO-252-3 (DPAK) package?

Yes. All listed substitute parts use the TO-252-3 (DPAK) Surface Mount package with identical pinout and mechanical dimensions. This ensures direct PCB compatibility without layout modifications. The package designation SC-63 is equivalent to TO-252-3 (DPAK).

Q5: Which substitute part offers the best RoHS compliance?

IRLR024NTRPBF, STD20NF06LT4, STD16NF06LT4, AOD444, and NTD20N06LT4G are all ROHS3 Compliant. The original IRLR024NTRR and Vishay Siliconix variants (IRLR024, IRLR024TR, IRLR024TRL, IRLR024TRR) are RoHS non-compliant. For new designs requiring regulatory compliance, select from the ROHS3 Compliant group.

Q6: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

Tape & Reel packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape and Digi-Reel® packaging provides components on cut tape segments, typically for lower-volume or mixed-component orders. Both formats contain identical components; packaging format selection depends on assembly process requirements and order volume.

Q7: Can Vishay Siliconix IRLR024 variants substitute for IRLR024NTRR in all applications?

Partial substitution only. Vishay IRLR024 variants operate at 60V Vdss (vs. 55V) and provide 14A continuous current (vs. 17A). The higher on-state resistance (100mOhm vs. 65mOhm) increases power dissipation. These parts are suitable only for applications with reduced current demands and where RoHS non-compliance is acceptable. Thermal design verification is required due to increased Rds On.

Q8: Why is NTD20N06LT4G listed as Obsolete despite superior specifications?

Product status reflects manufacturer discontinuation decisions independent of technical performance. Although NTD20N06LT4G offers 20A current rating and 48mOhm Rds On, onsemi has discontinued this part. Obsolete status creates long-term procurement risk. Use only when immediate inventory availability is confirmed and alternative parts cannot meet application requirements.

Q9: How should gate charge (Qg) differences affect component selection?

Gate charge determines switching speed and driver circuit requirements. Lower Qg values (e.g., STD16NF06LT4 at 7.5nC) reduce switching losses and allow faster switching frequencies. Higher Qg values (e.g., STD20NF06T4 at 31nC) require more driver current but may provide improved noise immunity. Selection depends on switching frequency and driver circuit capability.

Q10: What inventory considerations apply to substitute part selection?

IRLR024NTRPBF offers the highest inventory (77,400 units), ensuring long-term availability. STD20NF06T4 (27,055 units) and STD16NF06LT4 (17,100 units) provide substantial stock. IRLR024TRL and IRLR024TRR offer lower inventory (4,400 and 987 units respectively), creating potential supply constraints. For production continuity, prioritize parts with higher inventory levels.

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