IRLL014NPBF N-Channel MOSFET 55V 2A SOT-223 Equivalent & Substitute Parts

Part Overview

The IRLL014NPBF is an N-Channel MOSFET manufactured by Infineon Technologies in the HEXFET® series, rated for 55V drain-source voltage and 2A continuous drain current in a surface mount SOT-223 package. This device is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain compatibility with the original electrical specifications and mechanical form factor while meeting current availability and compliance requirements.

Key Parameters

Parameter	IRLL014NPBF	Unit
Drain-Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	2	A
On-Resistance (Rds On) @ 2A, 10V	140	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2	V
Gate Charge (Qg) @ 10V	14	nC
Power Dissipation (Max)	1	W
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-223
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the IRLL014NPBF are grouped based on the following critical parameters that determine functional equivalence:

Primary Compatibility Criteria:

Drain-Source Voltage (Vdss): Minimum 55V required
Continuous Drain Current (Id): Minimum 2A required
Package Type: SOT-223 (TO-261-4, TO-261AA)
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum
Technology: N-Channel MOSFET (Metal Oxide)

Secondary Electrical Parameters:

On-Resistance (Rds On): Lower values indicate improved performance
Gate Threshold Voltage (Vgs(th)): Compatibility with existing gate drive circuits
Gate Charge (Qg): Affects switching speed and drive requirements
Power Dissipation: Thermal management capability

Substitutes are classified into two categories: Direct Equivalents (matching or exceeding all primary parameters with minimal electrical variation) and Enhanced Alternatives (exceeding specifications with improved performance characteristics).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Power Diss. (W)	Status
IRLL014NPBF	Infineon	55	2	140 @ 2A, 10V	2 @ 250µA	14 @ 10V	1	Discontinued
IRLL014TRPBF	Vishay Siliconix	60	2.7	200 @ 1.6A, 5V	2 @ 250µA	8.4 @ 5V	2 / 3.1	Active
ZVN4306GTA	Diodes Incorporated	60	2.1	330 @ 3A, 10V	3 @ 1mA	—	3	Active
ZXMN6A11GTA	Diodes Incorporated	60	3.1	120 @ 2.5A, 10V	3 @ 250µA	5.7 @ 10V	2	Active
NTF3055-100T1G	onsemi	60	3	110 @ 1.5A, 10V	4 @ 250µA	22 @ 10V	1.3	Active
STN3NF06	STMicroelectronics	60	4	100 @ 1.5A, 10V	4 @ 250µA	13 @ 10V	3.3	Active
STN3NF06L	STMicroelectronics	60	4	100 @ 1.5A, 10V	2.8 @ 250µA	9 @ 5V	3.3	Active
PJW4N06A_R2_00001	Panjit International Inc.	60	4	100 @ 3A, 10V	2.5 @ 250µA	5.1 @ 4.5V	3.1	Active
BUK98150-55A/CUF	Nexperia USA Inc.	55	5.5	137 @ 5A, 10V	2 @ 1mA	5.3 @ 5V	8	Active
BUK78150-55A/CUF	Nexperia USA Inc.	55	5.5	150 @ 5A, 10V	4 @ 1mA	—	8	Active
BUK78150-55A/CUX	Nexperia USA Inc.	55	5.5	150 @ 5A, 10V	4 @ 1mA	—	8	Active

Engineering Selection Recommendations

Tier 1: Direct Equivalents (Recommended Primary Substitutes)

IRLL014TRPBF (Vishay Siliconix) — Active product with identical gate threshold voltage (2V @ 250µA) and same manufacturer series heritage. Vdss rating increased to 60V provides additional design margin. Drain current rating of 2.7A exceeds original specification. Power dissipation increased to 2W (Ta) / 3.1W (Tc) supports higher thermal loads. Gate charge reduced to 8.4nC @ 5V improves switching performance. RoHS3 compliant, MSL 1, suitable for direct PCB replacement.

ZXMN6A11GTA (Diodes Incorporated) — Active product with 60V Vdss and 3.1A continuous drain current. On-resistance of 120mOhm @ 2.5A, 10V is superior to original 140mOhm specification. Gate threshold voltage of 3V @ 250µA represents minor variation. Power dissipation of 2W matches original rating. Gate charge of 5.7nC @ 10V indicates faster switching. RoHS3 compliant, MSL 1, high inventory availability (6047 pcs).

Tier 2: Enhanced Performance Alternatives

STN3NF06L (STMicroelectronics) — Active STripFET™ II series product with 60V Vdss and 4A continuous drain current. Gate threshold voltage of 2.8V @ 250µA closely matches original 2V specification. On-resistance of 100mOhm @ 1.5A, 10V provides significant improvement. Gate charge of 9nC @ 5V supports efficient switching. Power dissipation of 3.3W (Tc) enables higher power applications. RoHS3 compliant, MSL 1, highest inventory availability (72446 pcs).

PJW4N06A_R2_00001 (Panjit International Inc.) — Active product with 60V Vdss and 4A continuous drain current. Gate threshold voltage of 2.5V @ 250µA is compatible with existing gate drive circuits. On-resistance of 100mOhm @ 3A, 10V matches STN3NF06L performance. Gate charge of 5.1nC @ 4.5V indicates excellent switching characteristics. Power dissipation of 3.1W (Ta) supports thermal requirements. RoHS3 compliant, MSL 1.

Tier 3: Automotive-Grade Alternatives (AEC-Q100/Q101 Qualified)

BUK98150-55A/CUF (Nexperia USA Inc.) — Active TrenchMOS™ series product with exact 55V Vdss match and 5.5A continuous drain current. On-resistance of 137mOhm @ 5A, 10V is equivalent to original specification. Gate threshold voltage of 2V @ 1mA matches original design. Gate charge of 5.3nC @ 5V provides superior switching performance. Power dissipation of 8W (Tc) supports high-power applications. AEC-Q100 qualified for automotive applications. RoHS3 compliant, MSL 1, highest inventory availability (85100 pcs).

BUK78150-55A/CUF and BUK78150-55A/CUX (Nexperia USA Inc.) — Active TrenchMOS™ series products with exact 55V Vdss match and 5.5A continuous drain current. On-resistance of 150mOhm @ 5A, 10V is within acceptable tolerance of original specification. Power dissipation of 8W (Tc) supports high-power applications. AEC-Q100 (CUF) and AEC-Q101 (CUX) qualified for automotive applications. RoHS3 compliant, MSL 1.

Selection Criteria Summary:

For direct replacement with minimal circuit redesign: IRLL014TRPBF or ZXMN6A11GTA
For improved performance and highest availability: STN3NF06L
For automotive applications with AEC qualification: BUK98150-55A/CUF
For cost-optimized solutions with enhanced current rating: PJW4N06A_R2_00001

All recommended substitutes maintain SOT-223 package compatibility, surface mount configuration, -55°C to 150°C operating temperature range, RoHS3 compliance, and MSL 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q1: Can IRLL014TRPBF directly replace IRLL014NPBF without circuit modifications?

A: Yes. IRLL014TRPBF maintains identical gate threshold voltage (2V @ 250µA), same SOT-223 package, and compatible electrical characteristics. The increased Vdss (60V vs. 55V) and drain current (2.7A vs. 2A) provide design margin without requiring circuit changes. Pin configuration and thermal characteristics are compatible.

Q2: What is the primary difference between STN3NF06 and STN3NF06L?

A: Both devices share identical Vdss (60V), drain current (4A), on-resistance (100mOhm @ 1.5A, 10V), and power dissipation (3.3W). The key difference is gate threshold voltage: STN3NF06 is 4V @ 250µA, while STN3NF06L is 2.8V @ 250µA. STN3NF06L provides closer compatibility with the original IRLL014NPBF gate drive requirements (2V threshold). Gate charge is also lower in STN3NF06L (9nC @ 5V vs. 13nC @ 10V).

Q3: Why do some substitutes have higher drain current ratings than the original IRLL014NPBF?

A: Higher drain current ratings (e.g., 5.5A in BUK98150-55A/CUF vs. 2A in IRLL014NPBF) indicate improved silicon technology and thermal design. These devices can handle the original 2A requirement with lower junction temperatures and reduced on-resistance, extending component life and improving reliability. Higher ratings do not require circuit modifications if the original application only requires 2A.

Q4: Are all substitute parts RoHS3 compliant and MSL 1 rated?

A: Yes. All recommended substitute parts listed in this document are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original IRLL014NPBF specifications. This ensures compatibility with standard PCB assembly processes and storage requirements.

Q5: What is the significance of AEC-Q100 and AEC-Q101 qualifications on BUK98150-55A/CUF and BUK78150 variants?

A: AEC-Q100 and AEC-Q101 are automotive industry reliability qualifications. AEC-Q100 covers discrete semiconductors for automotive applications, while AEC-Q101 covers optoelectronic components. These qualifications indicate enhanced testing for temperature cycling, electrostatic discharge, and long-term reliability. Use these variants if the application requires automotive-grade components or operates in harsh thermal environments.

Q6: Can I use ZVN4306GTA as a substitute if my circuit operates at lower gate drive voltages?

A: ZVN4306GTA has a gate threshold voltage of 3V @ 1mA, which is higher than the original IRLL014NPBF (2V @ 250µA). If your gate drive circuit provides only 3V to 5V, verify that the higher threshold voltage does not prevent adequate device turn-on. The on-resistance of 330mOhm @ 3A, 10V is also significantly higher than the original 140mOhm, which may increase power dissipation in high-current applications.

Q7: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape (CT) packaging is supplied as individual components cut from tape, suitable for small-quantity orders and manual assembly. Tape & Reel (TR) packaging supplies components on continuous tape in reels, optimized for automated pick-and-place assembly. Both formats use identical SOT-223 component packages. Selection depends on assembly process requirements and order quantity.

Q8: Why is the on-resistance specification measured at different current levels across substitute parts?

A: On-resistance (Rds On) varies with gate voltage and drain current due to semiconductor physics. Manufacturers specify Rds On at conditions representative of typical application use. For example, IRLL014NPBF specifies 140mOhm @ 2A, 10V, while NTF3055-100T1G specifies 110mOhm @ 1.5A, 10V. When comparing substitutes, normalize specifications to the same measurement conditions or consult detailed datasheets for Rds On vs. current curves.

Q9: Is ZXMN6A11GTA suitable for applications requiring low gate charge?

A: Yes. ZXMN6A11GTA has gate charge of 5.7nC @ 10V, which is significantly lower than the original IRLL014NPBF (14nC @ 10V). Lower gate charge reduces switching losses and simplifies gate driver design, particularly in high-frequency switching applications. This makes ZXMN6A11GTA suitable for PWM and switching power supply circuits.

Q10: Can I use BUK98150-55A/CUF in applications where the original IRLL014NPBF was thermally limited?

A: Yes. BUK98150-55A/CUF has power dissipation of 8W (Tc) compared to 1W (Ta) for the original IRLL014NPBF. The significantly higher power dissipation capability, combined with on-resistance of 137mOhm (comparable to original 140mOhm), allows operation at higher currents or with reduced thermal management requirements. This makes BUK98150-55A/CUF suitable for applications where thermal performance was a limiting factor.

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