IRLL024NPBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRLL024NPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage with 3.1A continuous drain current in a surface mount SOT-223 package. This device is discontinued at DiGi Electronics, necessitating identification of functionally equivalent substitute components. Equivalent parts must maintain compatibility with existing PCB layouts, electrical performance requirements, and thermal management specifications while meeting current product availability and compliance standards.

Substiute Parts

IRLL024NPBF

Infineon TechnologiesIn Stock: 1199IRLL024NPBF Datasheet

Current PartRFQ

DMN6068SE-13

Diodes IncorporatedIn Stock: 44721DMN6068SE-13 Datasheet

MFR RecommendedRFQ

NTF3055-100T1G

onsemiIn Stock: 30765NTF3055-100T1G Datasheet

MFR RecommendedRFQ

STN3NF06L

STMicroelectronicsIn Stock: 72493STN3NF06L Datasheet

MFR RecommendedRFQ

ZXMN6A11GTA

Diodes IncorporatedIn Stock: 6147ZXMN6A11GTA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRLL024NPBF are selected based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• FET Type: N-Channel (required match)
• Package: SOT-223 surface mount (required match for PCB compatibility)
• Drain-to-Source Voltage (Vdss): Equal to or greater than 55V
• Continuous Drain Current (Id): Equal to or greater than 3.1A at 25°C
• On-Resistance (Rds On): Lower or equivalent values preferred for thermal performance
• Gate Threshold Voltage (Vgs(th)): Within compatible range for gate drive circuits
• Operating Temperature: Minimum -55°C to 150°C (or extended range)
• Compliance: ROHS3 compliant, MSL 1 rating

Identified Substitute Parts:

All four substitute parts meet the core substitution criteria. They are grouped by voltage rating and current capacity:

• 60V Rated Devices (higher voltage margin): DMN6068SE-13, NTF3055-100T1G, STN3NF06L, ZXMN6A11GTA
• All devices maintain SOT-223 package compatibility
• All devices are active products with current inventory availability
• All devices meet ROHS3 compliance and MSL 1 requirements

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: DMN6068SE-13 (Diodes Incorporated)

The DMN6068SE-13 provides the closest electrical match to the IRLL024NPBF with active product status and highest inventory availability (44,681 pcs). It exceeds the original specifications in drain current (4.1A vs. 3.1A) and power dissipation (2W vs. 1W), providing design margin. The 60V Vdss rating offers improved voltage headroom over the original 55V specification. ROHS3 compliance and MSL 1 rating ensure supply chain compatibility.

Secondary Recommendation: STN3NF06L (STMicroelectronics)

The STN3NF06L offers the lowest gate charge (9 nC) and input capacitance (340 pF), beneficial for high-frequency switching applications. It provides 4A continuous drain current and 3.3W power dissipation. The STripFET™ II series designation indicates optimized switching performance. Product is active with substantial inventory (72,446 pcs).

Tertiary Recommendation: ZXMN6A11GTA (Diodes Incorporated)

The ZXMN6A11GTA matches the original 3.1A drain current specification exactly, minimizing design changes. It features the lowest gate charge among all substitutes (5.7 nC @ 10V) and reduced input capacitance (330 pF). Suitable for applications where current matching is critical. Lower inventory availability (6,047 pcs) compared to primary options.

Alternative for Extended Temperature: NTF3055-100T1G (onsemi)

The NTF3055-100T1G extends operating temperature to 175°C (vs. 150°C maximum for others), suitable for high-temperature environments. Drain current of 3A closely matches the original 3.1A specification. Higher gate charge (22 nC) and on-resistance (110 mOhm) may impact switching efficiency in high-frequency applications.

Selection Criteria Summary:

• All substitutes are active products with ROHS3 compliance and MSL 1 rating
• All maintain SOT-223 package compatibility for direct PCB substitution
• Voltage ratings (60V) exceed original specification, providing design margin
• Current ratings meet or exceed 3.1A requirement
• Choose based on thermal requirements, switching frequency, and gate drive circuit compatibility

Frequently Asked Questions (FAQ)

Q: Can the IRLL024NPBF be directly replaced with any of these substitute parts on the PCB?

A: Yes, all substitute parts use the SOT-223 package (TO-261-4, TO-261AA) with identical pinout compatibility. Direct PCB substitution is possible without layout modifications. Verify gate drive voltage compatibility with your circuit design, as threshold voltages vary between 2V and 4V.

Q: What is the main difference between the 55V original and the 60V substitutes?

A: The 60V rating provides 5V additional voltage margin over the original 55V specification. This is beneficial for circuit reliability and does not negatively impact performance in 55V-rated applications. All substitutes are backward compatible with 55V system designs.

Q: Which substitute has the lowest on-resistance?

A: The DMN6068SE-13 has the lowest on-resistance at 68 mOhm (measured at 12A, 10V), compared to the original 65 mOhm (at 3.1A, 10V). Lower on-resistance reduces power dissipation and heat generation during switching.

Q: Are there thermal considerations when selecting a substitute?

A: Yes. The STN3NF06L offers the highest power dissipation rating (3.3W), suitable for high-current or high-frequency applications. The DMN6068SE-13 and ZXMN6A11GTA provide 2W dissipation. The NTF3055-100T1G provides 1.3W, closest to the original 1W rating. Select based on your circuit's thermal environment and switching frequency.

Q: Do all substitutes meet the same compliance standards as the original?

A: Yes, all substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original IRLL024NPBF specifications. All are suitable for commercial and industrial applications with equivalent supply chain handling requirements.

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

A: The STN3NF06L and ZXMN6A11GTA have the lowest gate charge values (9 nC and 5.7 nC respectively), reducing switching losses and enabling higher frequency operation. The STN3NF06L also features the lowest input capacitance (340 pF), further optimizing high-frequency performance.

Q: What is the difference between SOT-223 and SOT-223-3 package designations?

A: Both designations refer to the same physical SOT-223 package with identical pinout and PCB footprint. The "-3" suffix indicates a 3-pin variant. All parts listed are compatible with standard SOT-223 PCB layouts.

Q: Can I use the NTF3055-100T1G in applications requiring extended temperature operation?

A: Yes, the NTF3055-100T1G operates to 175°C junction temperature, compared to 150°C for other substitutes. This makes it suitable for high-temperature environments. However, verify that your PCB and surrounding components support this temperature range.

Q: Which substitute has the best inventory availability?

A: The STN3NF06L has the highest inventory (72,446 pcs), followed by DMN6068SE-13 (44,681 pcs) and NTF3055-100T1G (30,700 pcs). The ZXMN6A11GTA has lower availability (6,047 pcs). For supply chain continuity, prioritize the STN3NF06L or DMN6068SE-13.