IRLL024ZPBF N-Channel MOSFET 55V 5A SOT-223 Equivalent & Substitute Parts

Part Overview

The IRLL024ZPBF 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 5A at 25°C. The part is currently discontinued at DiGi Electronics, making equivalent substitute components necessary for ongoing design requirements and production continuity. Substitute parts must maintain functional compatibility across voltage ratings, current handling, thermal characteristics, and package form factors while meeting RoHS3 compliance and operating temperature specifications.

Substiute Parts

IRLL024ZPBF

Infineon TechnologiesIn Stock: 1338IRLL024ZPBF Datasheet

Current PartRFQ

STN3NF06L

STMicroelectronicsIn Stock: 72493STN3NF06L Datasheet

MFR RecommendedRFQ

ZXMN6A09GTA

Diodes IncorporatedIn Stock: 1513ZXMN6A09GTA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRLL024ZPBF is determined by the following critical parameters:

Voltage Rating Compatibility: Substitute parts must have a Vdss rating equal to or greater than 55V. Both substitute candidates (STN3NF06L and ZXMN6A09GTA) feature 60V Vdss ratings, providing adequate voltage margin.

Current Rating Compatibility: The continuous drain current (Id) must meet or exceed the 5A requirement at the specified temperature condition. STN3NF06L provides 4A at Tc, while ZXMN6A09GTA provides 5.4A at Ta. Current ratings are evaluated against their respective temperature measurement conditions.

Package and Mounting: All candidates use SOT-223 surface mount packaging (TO-261-4, TO-261AA), ensuring mechanical and electrical compatibility with existing PCB layouts.

Thermal Characteristics: Power dissipation ratings and operating temperature ranges (-55°C to 150°C TJ) are maintained across all candidates.

Regulatory Compliance: All substitute parts maintain RoHS3 compliance, MSL Level 1 (Unlimited), and EAR99 ECCN classification, matching the original part's compliance profile.

On-State Resistance: Rds On values vary across candidates but remain within acceptable ranges for switching applications. Lower Rds On values indicate improved efficiency characteristics.

Parameter Comparison

Engineering Selection Recommendations

STN3NF06L (STMicroelectronics): This substitute is active in production with high inventory availability (72,446 pcs). It meets voltage and temperature specifications with 60V Vdss and -55°C to 150°C operating range. The continuous drain current rating of 4A at Tc is 1A below the original specification. This part is suitable for applications where the 4A current rating is sufficient or where thermal management allows operation within this limit. RoHS3 compliance and MSL Level 1 certification match the original part.

ZXMN6A09GTA (Diodes Incorporated): This substitute is active in production with moderate inventory (1,426 pcs). It exceeds the original current specification with 5.4A at Ta and provides superior on-state resistance (40 mOhm at 8.2A, 10V). The 60V Vdss rating and -55°C to 150°C operating range provide full compatibility. Higher gate charge (24.2 nC) and input capacitance (1407 pF @ 40V) may affect switching speed in high-frequency applications. RoHS3 compliance and MSL Level 1 certification are maintained.

Product Status Consideration: Both substitute parts are active products with established supply chains, addressing the discontinuation status of the IRLL024ZPBF. Selection between STN3NF06L and ZXMN6A09GTA depends on application-specific requirements for current handling, switching frequency, and thermal dissipation characteristics.

Frequently Asked Questions (FAQ)

Q: Can STN3NF06L replace IRLL024ZPBF in all applications?

A: STN3NF06L is compatible for applications where the 4A continuous drain current rating meets system requirements. The 60V Vdss rating provides voltage margin above the original 55V specification. Thermal management and current distribution must be evaluated for designs originally specified at 5A.

Q: What is the primary difference between STN3NF06L and ZXMN6A09GTA?

A: STN3NF06L provides 4A continuous current with 100 mOhm Rds On, while ZXMN6A09GTA provides 5.4A continuous current with 40 mOhm Rds On. ZXMN6A09GTA exhibits higher gate charge (24.2 nC vs. 9 nC) and significantly higher input capacitance (1407 pF vs. 340 pF), affecting switching characteristics in high-frequency circuits.

Q: Are the SOT-223 packages physically identical?

A: Both substitute parts use SOT-223 packaging (TO-261-4, TO-261AA), ensuring mechanical compatibility with existing PCB layouts. Pin configurations and lead spacing are equivalent for direct board-level substitution.

Q: Do substitute parts maintain RoHS3 compliance?

A: Both STN3NF06L and ZXMN6A09GTA are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity ratings, matching the original IRLL024ZPBF compliance profile.

Q: Which substitute is recommended for high-frequency switching applications?

A: STN3NF06L is preferable for high-frequency applications due to lower gate charge (9 nC vs. 24.2 nC) and lower input capacitance (340 pF vs. 1407 pF), resulting in faster switching transitions and reduced drive circuit stress.

Q: Which substitute provides better thermal performance?

A: ZXMN6A09GTA offers superior thermal characteristics with 2W power dissipation rating and lower on-state resistance (40 mOhm), reducing heat generation during continuous operation. STN3NF06L provides 3.3W power dissipation but at higher Rds On values.

Q: Can both substitutes operate across the full -55°C to 150°C temperature range?

A: Both STN3NF06L and ZXMN6A09GTA maintain the -55°C to 150°C operating temperature range (TJ), providing full thermal compatibility with the original IRLL024ZPBF specification.