IRFR2407TR N-Channel 75V 42A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFR2407TR is an N-Channel MOSFET manufactured by Infineon Technologies, designed for surface mount applications in the TO-252AA (DPAK) package. This device features a 75V drain-to-source voltage rating with 42A continuous drain current capability and 110W maximum power dissipation. The IRFR2407TR is classified as obsolete, making identification of functionally equivalent and substitute components essential for ongoing design support and production continuity. Substitute parts must maintain compatibility across electrical performance parameters, thermal characteristics, and mechanical packaging specifications.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	75	V
Continuous Drain Current (Id) @ 25°C	42	A
On-State Resistance (Rds On) @ 25A, 10V	26	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	110	nC
Input Capacitance (Ciss) @ 25V	2400	pF
Power Dissipation (Max)	110	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-252-3 (DPAK)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the IRFR2407TR are categorized based on the following substitution criteria:

Primary Substitution Parameters:

Drain-to-Source Voltage (Vdss): Equal to or greater than 75V
Continuous Drain Current (Id): Equal to or greater than 42A
Package Type: TO-252-3 (DPAK) surface mount
Operating Temperature Range: -55°C to 175°C minimum
On-State Resistance (Rds On): Lower or equivalent values preferred for thermal performance
Gate Threshold Voltage (Vgs(th)): Compatible gate drive voltage requirements

Parametric Equivalent: Parts with identical electrical specifications and package type but different product status or compliance certifications.

Manufacturer Recommended Substitutes: Parts with equal or superior electrical performance that maintain functional compatibility while offering improved availability or compliance status.

Application-Specific Considerations: Substitutes with higher voltage ratings (100V) or different current ratings are listed where thermal and electrical margins support direct replacement in typical applications.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Vgs(th) (V)	Qg @ 10V (nC)	Power Diss. (W)	Package	Status	RoHS
IRFR2407TR	Infineon	75	42	26 @ 25A	4 @ 250µA	110	110	TO-252-3	Obsolete	Non-compliant
IRFR2407TRPBF	Infineon	75	42	26 @ 25A	4 @ 250µA	110	110	TO-252-3	Active	ROHS3 Compliant
STD45NF75T4	STMicroelectronics	75	40	24 @ 20A	4 @ 250µA	80	125	TO-252-3	Active	ROHS3 Compliant
BUK9226-75A,118	Nexperia	75	45	24.6 @ 25A	2 @ 1mA	N/A	114	TO-252-3	Obsolete	ROHS3 Compliant
IPD35N10S3L26ATMA1	Infineon	100	35	24 @ 35A	2.4 @ 39µA	39	71	TO-252-3	Active	ROHS3 Compliant
IPD30N10S3L34ATMA1	Infineon	100	30	31 @ 30A	2.4 @ 29µA	31	57	TO-252-3	Active	ROHS3 Compliant
STD25NF10LT4	STMicroelectronics	100	25	35 @ 12.5A	2.5 @ 250µA	52	100	TO-252-3	Active	ROHS3 Compliant
STD25NF10T4	STMicroelectronics	100	25	38 @ 12.5A	4 @ 250µA	55	100	TO-252-3	Active	ROHS3 Compliant
STD26NF10	STMicroelectronics	100	25	38 @ 12.5A	4 @ 250µA	55	100	TO-252-3	Active	ROHS3 Compliant
STD30NF06LT4	STMicroelectronics	60	35	28 @ 18A	2.5 @ 250µA	31	70	TO-252-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalent:

IRFR2407TRPBF is the direct parametric equivalent to IRFR2407TR. Both devices share identical electrical specifications (75V, 42A, 26mOhm Rds On, 110W power dissipation) and package configuration. The primary distinction is product status and RoHS compliance: IRFR2407TRPBF is active and ROHS3 compliant, whereas IRFR2407TR is obsolete and non-compliant. IRFR2407TRPBF is the recommended replacement for new designs and production continuity.

Same Voltage Class (75V) Substitutes:

STD45NF75T4 (STMicroelectronics) maintains the 75V voltage rating with 40A continuous drain current, representing a 95% current capability match. This device offers superior thermal performance (125W vs. 110W) and lower gate charge (80nC vs. 110nC), resulting in reduced switching losses. STD45NF75T4 is active and ROHS3 compliant.

BUK9226-75A,118 (Nexperia) provides 75V rating with 45A continuous drain current, exceeding the original specification. However, this part is classified as obsolete, limiting its suitability for new production despite superior electrical performance.

Higher Voltage Class (100V) Substitutes:

IPD35N10S3L26ATMA1 and IPD30N10S3L34ATMA1 (Infineon OptiMOS™ series) operate at 100V, providing increased voltage margin. IPD35N10S3L26ATMA1 delivers 35A continuous current with 24mOhm Rds On, suitable for applications where the 42A specification can be reduced. IPD30N10S3L34ATMA1 provides 30A continuous current. Both are active and ROHS3 compliant.

STD25NF10LT4, STD25NF10T4, and STD26NF10 (STMicroelectronics STripFET™ series) operate at 100V with 25A continuous current ratings. These parts are suitable only for applications where current requirements do not exceed 25A. All three are active and ROHS3 compliant.

Lower Voltage Class (60V) Substitute:

STD30NF06LT4 (STMicroelectronics) operates at 60V with 35A continuous current. This part is applicable only in applications where the maximum operating voltage does not exceed 60V. The device is active and ROHS3 compliant.

Selection Criteria Summary:

For direct replacement in existing designs: IRFR2407TRPBF
For improved thermal performance at 75V: STD45NF75T4
For increased voltage margin with reduced current: IPD35N10S3L26ATMA1
For applications with lower current requirements: STD25NF10LT4, STD25NF10T4, or STD26NF10
For applications with lower voltage requirements: STD30NF06LT4

All recommended active substitutes are ROHS3 compliant and available in TO-252-3 (DPAK) surface mount packaging.

Frequently Asked Questions (FAQ)

Q1: Can IRFR2407TRPBF be used as a direct replacement for IRFR2407TR?

A: Yes. IRFR2407TRPBF is the parametric equivalent with identical electrical specifications and package type. The primary difference is that IRFR2407TRPBF is active and ROHS3 compliant, whereas IRFR2407TR is obsolete and non-compliant. IRFR2407TRPBF is the recommended replacement for production continuity.

Q2: What is the minimum current rating required for a substitute part?

A: The substitute must support a continuous drain current of at least 42A at 25°C to maintain functional equivalence. Parts with lower current ratings (such as 25A or 30A devices) are applicable only in applications where the actual operating current does not exceed the substitute's rating.

Q3: Can I use a 100V-rated MOSFET in place of the 75V IRFR2407TR?

A: Yes, provided all other electrical parameters are compatible. A 100V-rated device provides increased voltage margin and is suitable for applications where the maximum operating voltage does not exceed 100V. However, the substitute must maintain adequate current capability (minimum 42A) and acceptable on-state resistance for thermal performance.

Q4: What is the significance of gate threshold voltage (Vgs(th)) differences between substitutes?

A: Gate threshold voltage determines the gate drive voltage required for device operation. The IRFR2407TR requires 4V at 250µA. Substitutes with lower Vgs(th) values (such as 2.4V or 2.5V) may require different gate drive circuit design. Substitutes with equal or higher Vgs(th) values are directly compatible with existing gate drive circuits.

Q5: How does on-state resistance (Rds On) affect substitute selection?

A: Lower Rds On values reduce conduction losses and heat generation. The IRFR2407TR specifies 26mOhm at 25A and 10V. Substitutes with equal or lower Rds On values provide equivalent or improved thermal performance. Higher Rds On values increase power dissipation and may require thermal design review.

Q6: Are all substitute parts available in the same TO-252-3 (DPAK) package?

A: Yes. All substitute parts listed are available in TO-252-3 (DPAK) surface mount packaging, ensuring mechanical and thermal compatibility with existing PCB layouts and thermal management designs.

Q7: What is the difference between ROHS3 compliant and non-compliant parts?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. IRFR2407TR is non-compliant (obsolete), while IRFR2407TRPBF and all active substitutes are ROHS3 compliant. ROHS3 compliance is required for most commercial and industrial applications.

Q8: Can STD30NF06LT4 (60V) be used in a 75V application?

A: No. STD30NF06LT4 is rated for maximum 60V drain-to-source voltage. Using this device in a 75V application exceeds its voltage rating and risks device failure. Voltage-rated substitutes must equal or exceed the original specification.

Q9: What is the impact of gate charge (Qg) differences on circuit performance?

A: Gate charge affects switching speed and gate drive power requirements. The IRFR2407TR specifies 110nC at 10V. Substitutes with lower gate charge (such as 31nC, 39nC, or 80nC) reduce switching losses and may improve efficiency. Higher gate charge values increase switching losses and gate drive circuit power consumption.

Q10: Is BUK9226-75A,118 suitable for new production designs?

A: BUK9226-75A,118 is classified as obsolete, making it unsuitable for new production designs requiring long-term availability and supply chain stability. Although this device offers superior electrical performance (45A, 24.6mOhm), active alternatives such as STD45NF75T4 are preferred for new designs.

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