IRF3415STRR Equivalent & Substitute Parts Reference

Part Overview

The IRF3415STRR is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 150V drain-to-source voltage with 43A continuous drain current in a D2PAK surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The part belongs to the HEXFET® series and is suitable for applications requiring moderate current switching at 150V operating levels.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	150	V
Continuous Drain Current (Id) @ 25°C	43	A (Tc)
On-Resistance (Rds On) @ 22A, 10V	42	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	200	nC
Input Capacitance (Ciss) @ 25V	2400	pF
Power Dissipation (Max)	3.8 (Ta), 200 (Tc)	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	D2PAK (TO-263-3)	Surface Mount
FET Type	N-Channel	MOSFET

Substitute Part Grouping Explanation

Substitution of the IRF3415STRR is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a minimum Vdss rating of 150V. Parts with higher voltage ratings (such as 200V) are acceptable for direct substitution in 150V applications.

Current Capacity: Substitute parts must support the required continuous drain current. The IRF3415STRR operates at 43A (Tc). Substitutes with equal or greater current ratings are functionally compatible.

On-Resistance (Rds On): The on-resistance at specified gate voltage and current determines switching losses and thermal performance. Parts with Rds On values within ±10% of the original specification maintain equivalent electrical characteristics.

Package Compatibility: All listed substitutes use the D2PAK (TO-263-3) surface mount package, ensuring mechanical and thermal interface compatibility.

Gate Charge and Input Capacitance: These parameters affect gate drive requirements and switching speed. Substitutes with similar or lower values ensure compatibility with existing gate drive circuits.

Operating Temperature Range: The IRF3415STRR operates from -55°C to 175°C. Substitutes must support this full range or a compatible subset.

Product Status and Compliance: Active status parts with RoHS3 compliance are preferred for new designs and ongoing production.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Ciss (pF)	Temp Range (°C)	Status	RoHS
IRF3415STRR	Infineon	150	43	42 @ 22A	4 @ 250µA	200 @ 10V	2400 @ 25V	-55 to 175	Obsolete	Non-compliant
IRF3415STRLPBF	Infineon	150	43	42 @ 22A	4 @ 250µA	200 @ 10V	2400 @ 25V	-55 to 175	Active	RoHS3
IRFS4228PBF	Infineon	150	83	15 @ 33A	5 @ 250µA	107 @ 10V	4530 @ 25V	-40 to 175	Obsolete	RoHS3
AOB254L	Alpha & Omega	150	32	46 @ 20A	2.7 @ 250µA	40 @ 10V	2150 @ 75V	-55 to 175	Active	RoHS3
FDB390N15A	onsemi	150	27	39 @ 27A	4 @ 250µA	18.6 @ 10V	1285 @ 75V	-55 to 175	Active	RoHS3
PHB45NQ15T,118	Nexperia	150	45.1	42 @ 20A	4 @ 1mA	32 @ 10V	1770 @ 25V	-55 to 175	Active	RoHS3
STB75NF20	STMicroelectronics	200	75	34 @ 37A	4 @ 250µA	84 @ 10V	3260 @ 25V	-50 to 150	Active	RoHS3

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): IRF3415STRLPBF is the parametric equivalent of IRF3415STRR. This part maintains identical electrical specifications including 150V Vdss, 43A continuous drain current, 42mOhm on-resistance, and -55°C to 175°C operating temperature range. The primary distinction is product status: IRF3415STRLPBF is active and RoHS3 compliant, whereas IRF3415STRR is obsolete and RoHS non-compliant. This part is suitable for direct substitution in all applications without circuit modification.

Higher Current Capability Substitutes: PHB45NQ15T,118 (Nexperia) provides 45.1A continuous drain current with matching 150V Vdss rating and equivalent on-resistance of 42mOhm at 20A. This part is active and RoHS3 compliant. The slightly higher current rating and lower gate charge (32nC versus 200nC) provide improved performance margins. Operating temperature range matches the original specification (-55°C to 175°C).

Lower Current Substitutes: AOB254L (Alpha & Omega) and FDB390N15A (onsemi) provide reduced current ratings of 32A and 27A respectively. These parts are suitable only for applications where the required drain current does not exceed their rated values. Both maintain 150V Vdss rating and full operating temperature range compatibility. FDB390N15A features significantly lower gate charge (18.6nC) and input capacitance (1285pF), which may reduce gate drive power requirements.

Higher Voltage Rating Substitute: STB75NF20 (STMicroelectronics) operates at 200V Vdss with 75A continuous drain current. This part is suitable for 150V applications as the higher voltage rating provides additional design margin. However, the operating temperature range is reduced to -50°C to 150°C, which may not be acceptable for applications requiring the full -55°C to 175°C range of the original part.

Obsolete Status Consideration: IRFS4228PBF (Infineon) is listed as obsolete despite RoHS3 compliance. This part provides 83A continuous drain current at 150V but features significantly different electrical characteristics (15mOhm on-resistance, 107nC gate charge). Use of this part should be limited to applications where the higher current capability and lower on-resistance provide specific design advantages, and only when supply availability is confirmed.

Frequently Asked Questions (FAQ)

Q: Can IRF3415STRLPBF be used as a direct replacement for IRF3415STRR?

A: Yes. IRF3415STRLPBF is the parametric equivalent with identical electrical specifications. The primary differences are product status (active versus obsolete) and RoHS compliance (RoHS3 versus non-compliant). No circuit modifications are required.

Q: What is the difference between the IRF3415STRR and IRFS4228PBF?

A: Both parts operate at 150V Vdss, but IRFS4228PBF provides double the continuous drain current (83A versus 43A) with significantly lower on-resistance (15mOhm versus 42mOhm). IRFS4228PBF also features lower gate charge (107nC versus 200nC) and higher input capacitance (4530pF versus 2400pF). IRFS4228PBF is suitable only for applications requiring higher current capability.

Q: Is STB75NF20 compatible with circuits designed for IRF3415STRR?

A: STB75NF20 is mechanically and electrically compatible for 150V applications due to its 200V Vdss rating. However, the reduced operating temperature range (-50°C to 150°C versus -55°C to 175°C) may not be acceptable for all applications. Verify temperature requirements before substitution.

Q: What does the D2PAK package designation mean?

A: D2PAK is a surface mount package designation equivalent to TO-263-3. It contains three leads: two signal leads plus a thermal tab. All listed substitute parts use this identical package, ensuring mechanical and thermal interface compatibility without PCB redesign.

Q: Why is gate charge (Qg) important for substitution?

A: Gate charge determines the energy required to switch the MOSFET on and off. Parts with significantly different gate charge values may require gate drive circuit adjustments. IRF3415STRLPBF maintains identical gate charge (200nC), while PHB45NQ15T,118 features lower gate charge (32nC), potentially reducing gate drive power consumption.

Q: Can AOB254L be used in applications requiring 43A continuous current?

A: No. AOB254L is rated for 32A continuous drain current, which is below the 43A requirement of the original IRF3415STRR. Use of this part in 43A applications would result in thermal stress and potential device failure.

Q: What is the significance of RoHS3 compliance?

A: RoHS3 compliance indicates the part meets current environmental and hazardous substance restrictions. IRF3415STRLPBF and other active substitutes carry RoHS3 compliance, making them suitable for new designs and production environments with RoHS requirements. The original IRF3415STRR is RoHS non-compliant.

Q: How do input capacitance differences affect circuit performance?

A: Input capacitance (Ciss) affects gate drive circuit bandwidth and switching speed. Parts with lower Ciss values (such as FDB390N15A at 1285pF) require less gate charge and may switch faster. Higher Ciss values (such as IRFS4228PBF at 4530pF) require more gate drive energy but may provide better noise immunity.

Q: Is PHB45NQ15T,118 a suitable upgrade for IRF3415STRR?

A: Yes. PHB45NQ15T,118 provides 45.1A continuous current versus 43A, matching on-resistance (42mOhm), identical voltage rating (150V), and full temperature range compatibility (-55°C to 175°C). The part is active and RoHS3 compliant, making it suitable for both replacement and new designs.

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