IRFR3412TRLPBF N-Channel 100V 48A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFR3412TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage with 48A continuous drain current at 25°C. This device is housed in a TO-252AA (DPAK) surface mount package and is part of the HEXFET® series. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility with the 100V voltage rating, surface mount DPAK packaging, and operational temperature range of -55°C to 175°C.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	48	A (Tc)
On-Resistance (Rds On) @ 29A, 10V	25	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	5.5	V
Power Dissipation (Max)	140	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 (DPAK)	Surface Mount
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—

Substitute Part Grouping Explanation

Substitution of the IRFR3412TRLPBF is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Drain-to-Source Voltage (Vdss): 100V minimum
Package Type: TO-252-3 (DPAK) surface mount
FET Type: N-Channel
Technology: MOSFET (Metal Oxide)
Operating Temperature Range: -55°C to 175°C minimum

Performance Matching Criteria:

Continuous Drain Current (Id): 40A or greater at 25°C
On-Resistance (Rds On): 38 mOhm or lower at 10V gate drive
Power Dissipation: 100W or greater at case temperature

Substitute parts are grouped into two categories:

Direct Equivalents (Matched Current Rating): Parts with 40A to 55A continuous drain current ratings that maintain the 100V voltage class and DPAK package. These include IRFR3710ZTRLPBF (42A), DMNH10H028SK3-13 (55A), and SQD40N10-25_GE3 (40A).

Functional Alternatives (Reduced Current Rating): Parts with lower continuous drain current ratings (25A to 34A) that maintain voltage and package compatibility but operate at reduced current capacity. These include STD25NF10LT4 (25A), STD25NF10T4 (25A), and FDD3670 (34A). These are suitable for applications where the full 48A rating is not required.

Higher Current Alternatives: Parts with current ratings exceeding 48A, such as STD70N10F4 (60A), provide additional current margin and are suitable for designs requiring enhanced current capacity within the same voltage and package class.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Pd Max (W)	Package	Status
IRFR3412TRLPBF	Infineon	100	48 (Tc)	25 @ 29A, 10V	5.5 @ 250µA	140 (Tc)	TO-252-3 (DPAK)	Obsolete
IRFR3710ZTRLPBF	Infineon	100	42 (Tc)	18 @ 33A, 10V	4 @ 250µA	140 (Tc)	TO-252-3 (DPAK)	Active
BUK7227-100B,118	Nexperia	100	48 (Tc)	27 @ 25A, 10V	4 @ 1mA	167 (Tc)	TO-252-3 (DPAK)	Obsolete
DMNH10H028SK3-13	Diodes Inc.	100	55 (Tc)	28 @ 20A, 10V	3.3 @ 250µA	2 (Ta)	TO-252-3 (DPAK)	Active
FDD3670	onsemi	100	34 (Ta)	32 @ 7.3A, 10V	4 @ 250µA	83 (Tc)	TO-252-3 (DPAK)	Active
SQD40N10-25_GE3	Vishay	100	40 (Tc)	25 @ 40A, 10V	2.5 @ 250µA	136 (Tc)	TO-252-3 (DPAK)	Active
STD25NF10LT4	STMicroelectronics	100	25 (Tc)	35 @ 12.5A, 10V	2.5 @ 250µA	100 (Tc)	TO-252-3 (DPAK)	Active
STD25NF10T4	STMicroelectronics	100	25 (Tc)	38 @ 12.5A, 10V	4 @ 250µA	100 (Tc)	TO-252-3 (DPAK)	Active
STD70N10F4	STMicroelectronics	100	60 (Tc)	19.5 @ 30A, 10V	4 @ 250µA	125 (Tc)	TO-252-3 (DPAK)	Active
SUD35N10-26P-T4GE3	Vishay	100	35 (Tc)	26 @ 12A, 10V	4.4 @ 250µA	83 (Tc)	TO-252-3 (DPAK)	Active
AOD2910	Alpha & Omega	100	31 (Tc)	24 @ 20A, 10V	2.7 @ 250µA	53.5 (Tc)	TO-252-3 (DPAK)	Active

Engineering Selection Recommendations

For Direct Current Replacement (48A Equivalent):

IRFR3710ZTRLPBF is the primary active substitute. Although rated at 42A continuous drain current, it is manufactured by Infineon (same as the original part) and maintains the 100V voltage class, DPAK package, and 140W power dissipation. The part is in active production status with extensive inventory availability (25,300 pcs). The lower on-resistance (18 mOhm vs. 25 mOhm) provides improved thermal performance.

BUK7227-100B,118 from Nexperia matches the 48A current rating and 100V voltage class with identical DPAK packaging. However, this part is listed as obsolete, limiting its long-term availability. It is AEC-Q101 qualified for automotive applications and offers higher power dissipation (167W).

For Active Production with Matched Specifications:

DMNH10H028SK3-13 (Diodes Incorporated) provides 55A continuous drain current, exceeding the original 48A rating, with active production status and 12,700 pcs inventory. This part is suitable for applications requiring current margin above the original specification.

STD70N10F4 (STMicroelectronics) offers 60A continuous drain current with active status and 15,326 pcs inventory. The improved on-resistance (19.5 mOhm) and higher power dissipation (125W) make this suitable for high-current applications.

For Reduced Current Applications:

STD25NF10LT4 and STD25NF10T4 (both STMicroelectronics) are rated at 25A continuous drain current. These parts are suitable only for applications where the full 48A rating is not required. Both are in active production with high inventory levels (688,200 and 1,000,100 pcs respectively).

Compliance and Certification:

All recommended active substitutes carry RoHS3 compliance and REACH unaffected status. BUK7227-100B,118 includes AEC-Q101 automotive qualification. All parts operate within the -55°C to 175°C temperature range specified for the original device.

Frequently Asked Questions (FAQ)

Q: Can IRFR3710ZTRLPBF replace IRFR3412TRLPBF in all applications?

A: IRFR3710ZTRLPBF is rated at 42A continuous drain current compared to the original 48A. It is suitable for applications where the design current requirement does not exceed 42A. The improved on-resistance (18 mOhm vs. 25 mOhm) provides better thermal performance. Both parts share the same 100V voltage rating, DPAK package, and operating temperature range.

Q: What is the difference between parts rated at 25A (STD25NF10LT4, STD25NF10T4) and the original 48A part?

A: These parts are functional alternatives with reduced current capacity. They are suitable only for circuit designs where the maximum drain current does not exceed 25A. All three parts maintain the 100V voltage class and DPAK package compatibility. The lower current rating results in lower power dissipation and reduced thermal requirements.

Q: Why is DMNH10H028SK3-13 rated at 55A when the original is 48A?

A: DMNH10H028SK3-13 provides additional current margin above the original specification. This part is suitable for designs requiring enhanced current capacity or for applications where future current scaling is anticipated. The 100V voltage rating and DPAK package remain identical to the original part.

Q: Are all substitute parts available in the same DPAK package?

A: Yes. All substitute parts listed are housed in TO-252-3 (DPAK) surface mount packages with identical pinout and mechanical dimensions. Direct PCB substitution is possible without layout modifications.

Q: What is the significance of on-resistance (Rds On) differences between parts?

A: On-resistance directly affects power dissipation and thermal performance. Lower on-resistance values (such as IRFR3710ZTRLPBF at 18 mOhm) result in reduced heat generation at the same current level. Higher on-resistance values (such as STD25NF10T4 at 38 mOhm) require more careful thermal management in high-current applications.

Q: Which substitute parts are in active production status?

A: IRFR3710ZTRLPBF, DMNH10H028SK3-13, FDD3670, SQD40N10-25_GE3, STD25NF10LT4, STD25NF10T4, STD70N10F4, SUD35N10-26P-T4GE3, and AOD2910 are all listed as active production parts. BUK7227-100B,118 and the original IRFR3412TRLPBF are obsolete.

Q: Can I use a higher current-rated part (60A) in place of the 48A original?

A: Yes. STD70N10F4 (60A) is a direct functional replacement with enhanced current capacity. The 100V voltage rating, DPAK package, and operating temperature range are maintained. The improved on-resistance (19.5 mOhm) provides better thermal performance than the original part.

Q: What packaging options are available for these substitutes?

A: All substitute parts are available in TO-252-3 (DPAK) surface mount packaging. Packaging variants include Cut Tape (CT), Digi-Reel®, and Tape & Reel (TR) options depending on the specific part number and manufacturer. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts.

Q: Are there automotive-qualified alternatives?

A: BUK7227-100B,118 from Nexperia carries AEC-Q101 automotive qualification. However, this part is obsolete. For active production automotive-qualified alternatives, consult the specific manufacturer datasheets for AEC-Q101 certification status of other listed parts.

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