IRLR2905TRL N-Channel 55V 42A MOSFET Equivalent & Substitute Parts

Part Overview

The IRLR2905TRL is an N-Channel MOSFET manufactured by Infineon Technologies in the HEXFET® series, rated for 55V drain-to-source voltage and 42A continuous drain current in a TO-252AA (DPAK) surface mount package. This device is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	42	A (Tc)
On-Resistance (Rds On) @ 25A, 10V	27	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2	V
Gate Charge (Qg) @ 5V	48	nC
Power Dissipation (Max)	110	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 (DPAK)	Surface Mount
Product Status	Obsolete	N/A

Substitute Part Grouping Explanation

Substitution of the IRLR2905TRL is determined by the following critical parameters: drain-to-source voltage rating (Vdss), continuous drain current capability (Id), on-resistance (Rds On), package type (TO-252-3 DPAK), and product status (active vs. obsolete). Substitute parts are grouped into two categories:

Parametric Equivalent: Parts with identical or near-identical electrical specifications and the same package footprint, enabling direct replacement without circuit modification.

Manufacturer Recommended Substitutes: Parts with higher voltage ratings or modified current ratings that operate within the same package family, suitable for applications where the original specifications exceed circuit requirements.

The key parameters determining substitution eligibility are:

Vdss rating equal to or greater than 55V
Id rating equal to or greater than 42A
Rds On performance compatible with circuit requirements
TO-252-3 (DPAK) package compatibility
Active product status for long-term availability

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Power Dissipation (W)	Product Status	RoHS Compliance
IRLR2905TRL	Infineon	55	42 (Tc)	27 @ 25A, 10V	48 @ 5V	110	Obsolete	Non-compliant
IRLR2905TRPBF	Infineon	55	42 (Tc)	27 @ 25A, 10V	48 @ 5V	110	Active	ROHS3 Compliant
IPD30N10S3L34ATMA1	Infineon	100	30 (Tc)	31 @ 30A, 10V	31 @ 10V	57	Active	ROHS3 Compliant
IPD35N10S3L26ATMA1	Infineon	100	35 (Tc)	24 @ 35A, 10V	39 @ 10V	71	Active	ROHS3 Compliant
FDD13AN06A0	onsemi	60	50 (Tc)	13.5 @ 50A, 10V	29 @ 10V	115	Active	ROHS3 Compliant
FDD13AN06A0-F085	onsemi	60	50 (Tc)	13.5 @ 50A, 10V	29 @ 10V	115	Active	ROHS3 Compliant
STD15NF10T4	STMicroelectronics	100	23 (Tc)	65 @ 12A, 10V	40 @ 10V	70	Active	ROHS3 Compliant
STD20NF06LT4	STMicroelectronics	60	24 (Tc)	40 @ 12A, 10V	13 @ 10V	60	Active	ROHS3 Compliant
STD25NF10LT4	STMicroelectronics	100	25 (Tc)	35 @ 12.5A, 10V	52 @ 5V	100	Active	ROHS3 Compliant
STD25NF10T4	STMicroelectronics	100	25 (Tc)	38 @ 12.5A, 10V	55 @ 10V	100	Active	ROHS3 Compliant
STD26NF10	STMicroelectronics	100	25 (Tc)	38 @ 12.5A, 10V	55 @ 10V	100	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalent:

IRLR2905TRPBF is the direct parametric equivalent of IRLR2905TRL. Both devices share identical electrical specifications (55V, 42A, 27mOhm Rds On) and package configuration. IRLR2905TRPBF is classified as active product status with ROHS3 compliance, providing immediate substitution capability for obsolete IRLR2905TRL applications without circuit redesign.

Manufacturer Recommended Substitutes (Infineon OptiMOS™ Series):

IPD30N10S3L34ATMA1 and IPD35N10S3L26ATMA1 are active Infineon OptiMOS™ devices with 100V ratings and reduced current specifications (30A and 35A respectively). These substitutes are suitable for applications where the 55V rating of the original part exceeds circuit voltage requirements. Both devices maintain TO-252-3 package compatibility and ROHS3 compliance. IPD35N10S3L26ATMA1 offers superior on-resistance performance (24mOhm) compared to the original specification.

Manufacturer Recommended Substitutes (onsemi PowerTrench® Series):

FDD13AN06A0 and FDD13AN06A0-F085 are onsemi PowerTrench® devices rated for 60V with 50A continuous drain current capability. These parts exceed the original current specification and provide lower on-resistance (13.5mOhm). FDD13AN06A0-F085 includes automotive qualification (AEC-Q101) and is supplied in Tape & Reel packaging. Both variants maintain TO-252-3 package compatibility and ROHS3 compliance.

Manufacturer Recommended Substitutes (STMicroelectronics STripFET™ II Series):

STD20NF06LT4, STD25NF10LT4, STD25NF10T4, STD15NF10T4, and STD26NF10 are STMicroelectronics STripFET™ II devices with voltage ratings from 60V to 100V and current ratings from 23A to 25A. These parts are suitable for applications where the original 42A specification exceeds circuit requirements. All variants maintain TO-252-3 package compatibility and ROHS3 compliance. STD25NF10LT4 and STD25NF10T4 provide 100W power dissipation matching the original specification.

All recommended substitutes are active products with ROHS3 compliance, ensuring long-term availability and regulatory compliance for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Can IRLR2905TRPBF be used as a direct replacement for IRLR2905TRL?

A: Yes. IRLR2905TRPBF is a parametric equivalent with identical electrical specifications and package configuration. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modification is required.

Q: What is the difference between the Infineon OptiMOS™ substitutes and the original IRLR2905TRL?

A: IPD30N10S3L34ATMA1 and IPD35N10S3L26ATMA1 have higher voltage ratings (100V vs. 55V) and lower current ratings (30A and 35A vs. 42A). These devices are suitable for applications where the original voltage specification exceeds circuit requirements. The 100V rating provides additional design margin for voltage transients.

Q: Are the onsemi FDD13AN06A0 variants suitable for the IRLR2905TRL application?

A: FDD13AN06A0 and FDD13AN06A0-F085 have a 60V rating (higher than the original 55V) and 50A current capability (higher than the original 42A). These devices provide superior on-resistance performance (13.5mOhm vs. 27mOhm). Substitution is valid for applications where the circuit voltage does not exceed 60V and where improved efficiency from lower on-resistance is beneficial.

Q: What is the significance of the AEC-Q101 qualification on FDD13AN06A0-F085?

A: AEC-Q101 qualification indicates the device meets automotive industry reliability and quality standards. FDD13AN06A0-F085 is suitable for automotive applications requiring this certification. The standard FDD13AN06A0 variant without automotive qualification is suitable for industrial and consumer applications.

Q: Can STMicroelectronics STripFET™ II devices replace the IRLR2905TRL in all applications?

A: STMicroelectronics STripFET™ II devices have lower current ratings (23A to 25A) compared to the original 42A specification. These substitutes are suitable only for applications where the circuit current requirement does not exceed the device rating. Voltage ratings range from 60V to 100V, providing flexibility for different circuit voltage requirements.

Q: What packaging considerations apply to these substitute parts?

A: All recommended substitute parts maintain TO-252-3 (DPAK) package compatibility with the original IRLR2905TRL. PCB footprint and thermal characteristics remain consistent. Packaging variants (Cut Tape, Digi-Reel, Tape & Reel) affect supply and handling but do not impact electrical performance or physical compatibility.

Q: How do on-resistance specifications affect device selection?

A: On-resistance (Rds On) directly impacts power dissipation and thermal performance. Lower Rds On values reduce heat generation at equivalent current levels. The original IRLR2905TRL specifies 27mOhm at 25A, 10V. Substitute devices with lower Rds On (such as FDD13AN06A0 at 13.5mOhm) improve efficiency but may have different current measurement conditions. Circuit thermal analysis determines whether improved Rds On performance is necessary.

Q: What is the importance of RoHS compliance in substitute selection?

A: ROHS3 compliance is mandatory for products sold in regulated markets. The original IRLR2905TRL is RoHS non-compliant. All recommended active substitutes are ROHS3 compliant, ensuring regulatory compliance for new designs and production continuity. This compliance status is a primary factor in selecting active products over obsolete alternatives.

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