IRFR3504TRLPBF Equivalent & Substitute Parts

Part Overview

The IRFR3504TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 40V drain-to-source voltage and 30A continuous drain current in a Surface Mount TO-252AA (DPAK) package. This device is part of the HEXFET® series and is classified as Obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active product lines are necessary for new designs and ongoing production requirements. Substitute parts maintain functional compatibility through equivalent electrical characteristics and identical mechanical packaging.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	40	V
Continuous Drain Current (Id) @ 25°C	30	A (Tc)
On-State Resistance (Rds On) @ 30A, 10V	9.2	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	71	nC
Power Dissipation (Max)	140	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 (DPAK)	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)	MSL

Substitute Part Grouping Explanation

Substitution logic for the IRFR3504TRLPBF is based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): 40V nominal rating
Continuous Drain Current (Id): Minimum 30A at 25°C
On-State Resistance (Rds On): Performance within acceptable operating range
Package Type: TO-252-3 (DPAK) Surface Mount identical mechanical footprint
Operating Temperature Range: -55°C to 175°C (TJ)
Gate Drive Voltage: 10V maximum Rds On specification

Substitute Parts Identified:

Group 1 - Direct Voltage/Current Match (40V, ≥30A):

STD95N4F3: 40V, 80A, 6.5mOhm @ 40A, 10V
STD95N4LF3: 40V, 80A, 6mOhm @ 40A, 10V
STD64N4F6AG: 40V, 54A, 8.2mOhm @ 27A, 10V

Group 2 - Lower Voltage Rating (30V, ≥30A):

IPD50N03S2L06ATMA1: 30V, 50A, 6.4mOhm @ 50A, 10V
STD100N3LF3: 30V, 80A, 5.5mOhm @ 40A, 10V

Group 3 - Higher Voltage Rating (55V, ≥30A):

STD65N55F3: 55V, 80A, 8.5mOhm @ 32A, 10V

All substitute parts maintain identical TO-252-3 (DPAK) packaging, MSL 1 rating, and -55°C to 175°C operating temperature range.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg @ 10V (nC)	Power Diss. (W)	Product Status	Package
IRFR3504TRLPBF	Infineon	40	30	9.2 @ 30A, 10V	71	140	Obsolete	TO-252-3 (DPAK)
STD95N4F3	STMicroelectronics	40	80	6.5 @ 40A, 10V	54	110	Active	TO-252-3 (DPAK)
STD95N4LF3	STMicroelectronics	40	80	6 @ 40A, 10V	70	110	Active	TO-252-3 (DPAK)
STD64N4F6AG	STMicroelectronics	40	54	8.2 @ 27A, 10V	44	60	Active	TO-252-3 (DPAK)
IPD50N03S2L06ATMA1	Infineon	30	50	6.4 @ 50A, 10V	68	136	Active	TO-252-3 (DPAK)
STD100N3LF3	STMicroelectronics	30	80	5.5 @ 40A, 10V	27	110	Obsolete	TO-252-3 (DPAK)
STD65N55F3	STMicroelectronics	55	80	8.5 @ 32A, 10V	45	110	Active	TO-252-3 (DPAK)

Engineering Selection Recommendations

For Direct Replacement (40V Rating):

STD95N4F3 and STD95N4LF3 are the primary substitutes for the IRFR3504TRLPBF. Both parts maintain the 40V Vdss rating and exceed the 30A continuous drain current requirement with 80A capability. Both are Active product status from STMicroelectronics with RoHS3 compliance and AEC-Q101 automotive qualification (STD95N4F3). The STD95N4LF3 offers lower gate threshold voltage (2.5V vs. 4V) and improved on-state resistance (6mOhm vs. 9.2mOhm), providing superior switching performance.

STD64N4F6AG provides an alternative 40V solution with 54A continuous drain current and Active product status. This part includes AEC-Q101 automotive qualification and RoHS3 compliance. The lower power dissipation rating (60W vs. 140W) indicates reduced thermal performance compared to the original part.

For Lower Voltage Applications (30V Rating):

IPD50N03S2L06ATMA1 (Infineon OptiMOS™ series) and STD100N3LF3 (STMicroelectronics STripFET™ II series) are suitable when circuit voltage requirements are 30V or lower. IPD50N03S2L06ATMA1 is Active product status with AEC-Q101 automotive qualification. STD100N3LF3 is Obsolete but offers 80A continuous drain current with superior on-state resistance (5.5mOhm).

For Higher Voltage Applications (55V Rating):

STD65N55F3 accommodates applications requiring voltage ratings above 40V, with 55V Vdss and 80A continuous drain current. This part is Active product status with RoHS3 compliance and superior on-state resistance (8.5mOhm @ 32A, 10V).

Compliance Considerations:

All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity rating and -55°C to 175°C operating temperature range. Parts with Active product status (STD95N4F3, STD95N4LF3, STD64N4F6AG, IPD50N03S2L06ATMA1, STD65N55F3) are recommended for new designs. RoHS3 compliance is confirmed for all active substitutes.

Frequently Asked Questions (FAQ)

Q: Can STD95N4F3 or STD95N4LF3 directly replace IRFR3504TRLPBF in existing designs?

A: Yes. Both parts maintain identical 40V Vdss rating, exceed the 30A continuous drain current requirement, use the same TO-252-3 (DPAK) package, and operate across the same temperature range (-55°C to 175°C). Both are Active product status. STD95N4LF3 offers improved electrical performance with lower on-state resistance (6mOhm vs. 9.2mOhm) and lower gate threshold voltage (2.5V vs. 4V).

Q: What is the difference between STD95N4F3 and STD95N4LF3?

A: Both parts are 40V, 80A MOSFETs in TO-252-3 (DPAK) packaging. STD95N4LF3 has lower gate threshold voltage (2.5V vs. 4V), lower on-state resistance (6mOhm vs. 6.5mOhm @ 40A, 10V), and supports lower drive voltage (5V, 10V vs. 10V only). STD95N4LF3 has maximum Vgs of ±16V compared to ±20V for STD95N4F3.

Q: Can I use IPD50N03S2L06ATMA1 if my circuit operates at 30V or lower?

A: Yes. IPD50N03S2L06ATMA1 is rated for 30V Vdss with 50A continuous drain current, exceeding the 30A requirement. It uses identical TO-252-3 (DPAK) packaging and maintains the same operating temperature range. This part is Active product status with AEC-Q101 automotive qualification.

Q: Why does STD64N4F6AG have lower power dissipation (60W vs. 140W)?

A: Power dissipation rating reflects thermal performance under specific test conditions. STD64N4F6AG's 60W rating indicates different thermal characteristics compared to the original 140W rating. This part remains suitable for applications where the 30A continuous drain current requirement is met, but thermal design must account for the lower power dissipation specification.

Q: Are all substitute parts RoHS3 compliant?

A: All Active product status substitutes (STD95N4F3, STD95N4LF3, STD64N4F6AG, IPD50N03S2L06ATMA1, STD65N55F3) are RoHS3 compliant. STD100N3LF3 is Obsolete product status but also RoHS3 compliant.

Q: What is the advantage of STD65N55F3 over the original IRFR3504TRLPBF?

A: STD65N55F3 provides higher voltage rating (55V vs. 40V Vdss), allowing use in higher voltage applications. It maintains 80A continuous drain current, identical TO-252-3 (DPAK) packaging, and Active product status. The higher voltage rating provides design margin for circuits with voltage transients or higher nominal operating voltages.

Q: Can I use these substitutes in automotive applications?

A: STD95N4F3, STD64N4F6AG, and IPD50N03S2L06ATMA1 carry AEC-Q101 automotive qualification. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating suitable for automotive environments. Verify specific application requirements with design documentation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message