IRLL014NTR N-Channel MOSFET 55V 2A SOT-223 Equivalent & Substitute Parts

Part Overview

The IRLL014NTR is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage with 2A continuous drain current in a surface mount SOT-223 package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -55°C to 150°C and is suitable for general-purpose switching applications requiring moderate current handling in compact form factors.

Substiute Parts

IRLL014NTR

Infineon TechnologiesIn Stock: 3692IRLL014NTR Datasheet

Current PartRFQ

IRLL014NTRPBF

Infineon TechnologiesIn Stock: 50408IRLL014NTRPBF Datasheet

Parametric EquivalentRFQ

BUK78150-55A/CUF

Nexperia USA Inc.In Stock: 4708BUK78150-55A/CUF Datasheet

MFR RecommendedRFQ

BUK78150-55A/CUX

Nexperia USA Inc.In Stock: 3388BUK78150-55A/CUX Datasheet

MFR RecommendedRFQ

BUK98150-55A/CUF

Nexperia USA Inc.In Stock: 85131BUK98150-55A/CUF Datasheet

MFR RecommendedRFQ

IRLL014TRPBF

Vishay SiliconixIn Stock: 15548IRLL014TRPBF Datasheet

MFR RecommendedRFQ

STN3NF06L

STMicroelectronicsIn Stock: 72493STN3NF06L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRLL014NTR are categorized based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Minimum 55V
• Package Type: SOT-223 surface mount
• FET Type: N-Channel MOSFET
• Operating Temperature Range: -55°C to 150°C
• Mounting: Surface Mount

Substitution Categories:

Category 1: Parametric Equivalents (Identical Electrical Specifications) Parts that maintain the same voltage rating, current rating, and on-resistance characteristics as the IRLL014NTR. These provide direct functional replacement with identical performance envelopes.

Category 2: Higher Current Rated Substitutes (Enhanced Performance) Parts rated for higher continuous drain current (5.5A) while maintaining the 55V voltage rating. These provide superior current handling capability and lower on-resistance, suitable for applications where the original 2A rating is marginal or where design margin is required.

Category 3: Elevated Voltage Rated Substitutes (Increased Voltage Margin) Parts rated for 60V drain-to-source voltage with comparable or higher current ratings. These provide additional voltage headroom while maintaining or exceeding current capacity.

All substitute parts are available in active product status with RoHS3 compliance, addressing the obsolescence of the original IRLL014NTR.

Parameter Comparison

Engineering Selection Recommendations

Direct Parametric Equivalent: IRLL014NTRPBF (Infineon Technologies) provides identical electrical specifications to the obsolete IRLL014NTR with the primary advantage of active product status and RoHS3 compliance. This part is the preferred choice for direct replacement in existing designs without circuit modification.

Higher Current Capacity Substitutes (55V Rating): BUK98150-55A/CUF (Nexperia USA Inc.) offers superior performance within the same 55V voltage class, providing 5.5A continuous drain current versus 2A, with lower on-resistance (137 mOhm versus 140 mOhm) and enhanced power dissipation capability (8W versus 1W). This part includes AEC-Q100 automotive qualification and is suitable for applications requiring design margin or higher current demands.

BUK78150-55A/CUF and BUK78150-55A/CUX (Nexperia USA Inc.) provide equivalent 55V, 5.5A performance with AEC-Q100 and AEC-Q101 automotive qualifications respectively. These parts are suitable for automotive-grade applications requiring enhanced reliability certification.

Elevated Voltage Rated Substitutes (60V Rating): IRLL014TRPBF (Vishay Siliconix) provides 60V voltage rating with 2.7A current capacity, offering increased voltage headroom for applications subject to transient overvoltage conditions. This part maintains compatibility with the original gate threshold voltage specification.

STN3NF06L (STMicroelectronics) offers 60V voltage rating with 4A continuous drain current and superior on-resistance performance (100 mOhm), providing both voltage and current margin over the original specification. This part is suitable for applications requiring enhanced performance headroom.

All recommended substitutes maintain SOT-223 package compatibility, surface mount mounting type, and -55°C to 150°C operating temperature range. Selection should be based on specific application requirements for voltage margin, current capacity, and automotive qualification status.

Frequently Asked Questions (FAQ)

Q: Can IRLL014NTRPBF be used as a direct replacement for IRLL014NTR? A: Yes. IRLL014NTRPBF is a parametric equivalent with identical electrical specifications (55V, 2A, 140 mOhm Rds On). The primary differences are active product status and RoHS3 compliance. Both parts use SOT-223 packaging and are pin-compatible.

Q: What is the difference between the Nexperia BUK78150-55A/CUF and BUK78150-55A/CUX variants? A: Both parts are electrically identical with 55V, 5.5A ratings and 150 mOhm on-resistance. The primary difference is automotive qualification: BUK78150-55A/CUF carries AEC-Q100 qualification, while BUK78150-55A/CUX carries AEC-Q101 qualification. Selection depends on automotive-grade requirements for the application.

Q: Why do the Nexperia BUK98150-55A/CUF specifications differ from BUK78150 parts despite similar part numbers? A: BUK98150-55A/CUF is a distinct product line within the TrenchMOS™ series with optimized characteristics: lower on-resistance (137 mOhm versus 150 mOhm), lower gate threshold voltage (2V versus 4V), and lower gate charge (5.3 nC versus unspecified). These differences reflect different silicon technology optimization within the same voltage and current class.

Q: Can I use a 60V rated part (IRLL014TRPBF or STN3NF06L) in place of the 55V IRLL014NTR? A: Yes. Both 60V parts are electrically compatible and provide additional voltage margin. IRLL014TRPBF maintains the 2A current class with 2.7A capability. STN3NF06L provides 4A capability with superior on-resistance (100 mOhm). Both are suitable for applications where the original 55V rating is adequate and additional voltage headroom is beneficial.

Q: Are all substitute parts available in the same packaging as IRLL014NTR? A: Yes. All substitute parts use SOT-223 surface mount packaging (TO-261-4, TO-261AA case designation). Pin configuration and footprint compatibility are maintained across all listed substitutes.

Q: What is the significance of the different current measurement conditions (Ta versus Tc)? A: Ta indicates ambient temperature measurement condition, while Tc indicates case temperature measurement condition. IRLL014NTR specifies 2A at Ta (ambient), while higher-current substitutes specify ratings at Tc (case temperature). This reflects different thermal measurement methodologies but does not affect functional compatibility in typical applications.

Q: Which substitute part provides the best on-resistance performance? A: STN3NF06L provides the lowest on-resistance at 100 mOhm (measured at 1.5A, 10V), followed by BUK98150-55A/CUF at 137 mOhm (measured at 5A, 10V). Lower on-resistance reduces power dissipation and heat generation in switching applications.

Q: Are all substitute parts RoHS compliant? A: Yes. All active substitute parts listed carry RoHS3 compliance. The original IRLL014NTR is RoHS non-compliant, making RoHS3-compliant substitutes necessary for applications subject to RoHS requirements.