AUIRLL024NTR N-Channel 55V 3.1A MOSFET Equivalent & Substitute Parts

Part Overview

The AUIRLL024NTR is an N-Channel MOSFET manufactured by Infineon Technologies, designed for surface mount applications in the SOT-223 package. This device operates at 55V drain-to-source voltage with a continuous drain current rating of 3.1A and maximum power dissipation of 1W. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	3.1	A (Ta)
On-State Resistance (Rds On Max) @ 3.1A, 10V	65	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 250µA	2	V
Gate Charge (Qg Max) @ 5V	15.6	nC
Maximum Gate Voltage (Vgs Max)	±16	V
Input Capacitance (Ciss Max) @ 25V	510	pF
Power Dissipation (Max)	1	W (Ta)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	SOT-223	Surface Mount
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the AUIRLL024NTR are classified based on electrical parameter compatibility and product availability status. The substitution logic is determined by the following critical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 55V
Continuous Drain Current (Id): Must equal or exceed 3.1A at 25°C
On-State Resistance (Rds On): Must not exceed 65mOhm at rated conditions
Gate Threshold Voltage (Vgs(th)): Must not exceed 2V at 250µA
Operating Temperature Range: Must support -55°C to 150°C
Package: SOT-223 surface mount configuration

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package Case: TO-261-4 or TO-261AA equivalent
Moisture Sensitivity Level: MSL 1 (Unlimited)

Compliance Criteria:

RoHS3 Compliance required
REACH Unaffected status required

Two substitute parts meet these criteria with varying degrees of parameter alignment and product status availability.

Parameter Comparison

Parameter	AUIRLL024NTR (Main)	IRLL024NTRPBF (Parametric Equivalent)	ZXMN6A11GTA (MFR Recommended)
Manufacturer	Infineon Technologies	Infineon Technologies	Diodes Incorporated
Drain to Source Voltage (Vdss)	55 V	55 V	60 V
Continuous Drain Current (Id) @ 25°C	3.1 A (Ta)	3.1 A (Ta)	3.1 A (Ta)
Rds On (Max) @ Id, Vgs	65 mOhm @ 3.1A, 10V	65 mOhm @ 3.1A, 10V	120 mOhm @ 2.5A, 10V
Vgs(th) (Max) @ Id	2 V @ 250µA	2 V @ 250µA	3 V @ 250µA
Gate Charge (Qg Max) @ Vgs	15.6 nC @ 5V	15.6 nC @ 5V	5.7 nC @ 10V
Vgs (Max)	±16 V	±16 V	±20 V
Input Capacitance (Ciss Max) @ Vds	510 pF @ 25V	510 pF @ 25V	330 pF @ 40V
Power Dissipation (Max)	1 W (Ta)	1 W (Ta)	2 W (Ta)
Operating Temperature	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Package	SOT-223	SOT-223	SOT-223-3
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

IRLL024NTRPBF (Parametric Equivalent - Primary Substitute)

The IRLL024NTRPBF is the direct parametric equivalent to the AUIRLL024NTR. Both parts are manufactured by Infineon Technologies and share identical electrical specifications across all critical parameters: 55V Vdss, 3.1A continuous drain current, 65mOhm Rds On, 2V Vgs(th), and 15.6nC gate charge. The primary distinction is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Obsolete). The IRLL024NTRPBF maintains full compliance with ROHS3 and REACH requirements. This part is recommended as the first-choice substitute due to electrical parameter equivalence and active product status with established supply chain availability (35,400 pcs in stock).

ZXMN6A11GTA (MFR Recommended - Secondary Substitute)

The ZXMN6A11GTA, manufactured by Diodes Incorporated, functions as an alternative substitute with enhanced electrical performance characteristics. This device exceeds the minimum voltage requirement (60V versus 55V Vdss) and provides doubled power dissipation capability (2W versus 1W). However, the ZXMN6A11GTA exhibits higher on-state resistance (120mOhm @ 2.5A, 10V versus 65mOhm @ 3.1A, 10V) and elevated gate threshold voltage (3V versus 2V). The device maintains compliance with ROHS3 and REACH standards. Selection of this part is appropriate for applications where increased voltage margin and thermal headroom are beneficial, provided that the higher Rds On and Vgs(th) do not conflict with circuit design requirements. Supply availability is confirmed (6,047 pcs in stock).

Both substitute parts maintain SOT-223 surface mount packaging, MSL 1 moisture sensitivity rating, and full operating temperature range compatibility (-55°C to 150°C).

Frequently Asked Questions (FAQ)

Q: Can IRLL024NTRPBF directly replace AUIRLL024NTR in existing designs?

A: Yes. The IRLL024NTRPBF is a parametric equivalent with identical electrical specifications. Both parts share the same Vdss (55V), Id (3.1A), Rds On (65mOhm), Vgs(th) (2V), and gate charge (15.6nC) values. The only differences are packaging format and product status. No circuit modifications are required.

Q: What are the key differences between IRLL024NTRPBF and ZXMN6A11GTA?

A: The IRLL024NTRPBF is a direct parametric match to the original part. The ZXMN6A11GTA offers higher voltage rating (60V versus 55V) and greater power dissipation (2W versus 1W), but exhibits higher on-state resistance (120mOhm versus 65mOhm) and higher gate threshold voltage (3V versus 2V). Selection depends on whether the application requires the enhanced voltage and thermal margins of the ZXMN6A11GTA or the matched electrical characteristics of the IRLL024NTRPBF.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both IRLL024NTRPBF and ZXMN6A11GTA are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the packaging difference between AUIRLL024NTR and IRLL024NTRPBF?

A: The AUIRLL024NTR is supplied in Tape & Reel (TR) format, while IRLL024NTRPBF is supplied in Cut Tape (CT) & Digi-Reel® format. Both are surface mount SOT-223 packages with identical pinout and mechanical dimensions. The packaging difference affects procurement and handling but does not impact electrical performance or circuit compatibility.

Q: Can ZXMN6A11GTA be used in applications requiring the exact 65mOhm Rds On specification?

A: No. The ZXMN6A11GTA has a maximum Rds On of 120mOhm at 2.5A and 10V, which exceeds the original specification of 65mOhm. Applications with strict on-state resistance requirements must use IRLL024NTRPBF to maintain the original electrical characteristics.

Q: What is the operating temperature range for all three parts?

A: All three parts—AUIRLL024NTR, IRLL024NTRPBF, and ZXMN6A11GTA—support an operating temperature range of -55°C to 150°C (TJ), ensuring compatibility across thermal environments.

Q: Are there any gate voltage limitations when substituting these parts?

A: The AUIRLL024NTR and IRLL024NTRPBF both support ±16V maximum gate voltage. The ZXMN6A11GTA supports ±20V maximum gate voltage, providing additional margin. All three parts are compatible with standard gate drive circuits operating within ±16V.

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