IRFU3710ZPBF N-Channel MOSFET 100V 42A Equivalent & Substitute Parts

Part Overview

The IRFU3710ZPBF is an N-Channel MOSFET manufactured by Infineon Technologies, part of the HEXFET® series. This device is rated for 100V drain-to-source voltage with a continuous drain current of 42A at 25°C and maximum power dissipation of 140W. The component features a through-hole IPAK (TO-251AA) package configuration.

The IRFU3710ZPBF is classified as an obsolete product. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and redesign activities where this component is specified in existing designs or where inventory depletion requires alternative sourcing.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	42	A
On-State Resistance (Rds On Max) @ Id, Vgs	18 mOhm @ 33A, 10V	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ Id	4	V @ 250µA
Gate Charge (Qg Max) @ Vgs	100	nC @ 10V
Input Capacitance (Ciss Max) @ Vds	2930	pF @ 25V
Power Dissipation (Max)	140	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-251-3 Short Leads, IPak, TO-251AA	Through Hole
Vgs (Max)	±20	V

Substitute Part Grouping Explanation

Substitution of the IRFU3710ZPBF is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

Drain to Source Voltage (Vdss): Must equal or exceed 100V
Package Type: Must be TO-251-3 Short Leads, IPak, TO-251AA (through-hole IPAK)
Gate Drive Voltage: Must support 10V drive voltage specification
Operating Temperature Range: Must encompass -55°C to 175°C (TJ)
Maximum Gate Voltage (Vgs): Must support ±20V

Performance Characteristics:

Continuous Drain Current (Id): Substitute must meet or exceed 42A @ 25°C
On-State Resistance (Rds On): Lower or equal values indicate improved performance
Gate Charge (Qg): Lower values indicate faster switching characteristics
Input Capacitance (Ciss): Values within the specified range ensure compatible gate drive requirements

The IRFU4510PBF qualifies as a direct substitute based on matching electrical ratings, identical package configuration, and compatible thermal and voltage specifications.

Parameter Comparison

Parameter	IRFU3710ZPBF	IRFU4510PBF	Unit
Manufacturer	Infineon Technologies	Infineon Technologies	—
Series	HEXFET®	HEXFET®	—
FET Type	N-Channel	N-Channel	—
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	100	100	V
Continuous Drain Current (Id) @ 25°C	42	56	A
Drive Voltage (Max Rds On)	10	10	V
Rds On (Max) @ Id, Vgs	18 mOhm @ 33A, 10V	13.9 mOhm @ 38A, 10V	mOhm
Vgs(th) (Max) @ Id	4 @ 250µA	4 @ 100µA	V
Gate Charge (Qg Max) @ Vgs	100 @ 10V	81 @ 10V	nC
Vgs (Max)	±20	±20	V
Input Capacitance (Ciss Max) @ Vds	2930 @ 25V	3031 @ 50V	pF
Power Dissipation (Max)	140	143	W
Operating Temperature	-55 to 175	-55 to 175	°C (TJ)
Mounting Type	Through Hole	Through Hole	—
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	—
REACH Status	REACH Unaffected	REACH Unaffected	—
ECCN	EAR99	EAR99	—
HTSUS	8541.29.0095	8541.29.0095	—
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

IRFU4510PBF as Primary Substitute:

The IRFU4510PBF is the manufacturer-recommended substitute for the IRFU3710ZPBF. Both devices share identical electrical ratings for drain-to-source voltage (100V), gate voltage specifications (±20V), and operating temperature range (-55°C to 175°C). Both employ the same through-hole IPAK (TO-251AA) package configuration, ensuring direct mechanical and electrical compatibility in existing PCB layouts.

The IRFU4510PBF provides enhanced performance characteristics relative to the IRFU3710ZPBF:

Higher continuous drain current rating (56A versus 42A)
Lower on-state resistance (13.9 mOhm versus 18 mOhm)
Reduced gate charge (81 nC versus 100 nC)
Equivalent power dissipation capability (143W versus 140W)

Compliance and Availability:

The IRFU4510PBF holds Active product status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. The IRFU3710ZPBF is classified as Obsolete, making the IRFU4510PBF the appropriate selection for new designs and ongoing production support.

Both devices maintain identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8541.29.0095), confirming regulatory equivalence.

Frequently Asked Questions (FAQ)

Q: Can the IRFU4510PBF directly replace the IRFU3710ZPBF in existing designs?

A: Yes. Both devices share identical drain-to-source voltage (100V), gate voltage specifications (±20V), operating temperature range (-55°C to 175°C), and package configuration (TO-251-3 Short Leads, IPak, TO-251AA). The IRFU4510PBF provides equal or superior electrical performance across all specified parameters.

Q: What are the key differences between these two devices?

A: The IRFU4510PBF offers higher continuous drain current (56A versus 42A), lower on-state resistance (13.9 mOhm versus 18 mOhm), and reduced gate charge (81 nC versus 100 nC). These differences represent performance improvements rather than incompatibilities. The IRFU3710ZPBF is obsolete; the IRFU4510PBF is active and widely available.

Q: Are there any package or pinout differences?

A: No. Both devices use the TO-251-3 Short Leads, IPak, TO-251AA through-hole package with identical pinout and mechanical dimensions. No PCB layout modifications are required.

Q: What is the significance of the lower gate charge in the IRFU4510PBF?

A: Lower gate charge (81 nC versus 100 nC) indicates faster switching response and reduced gate drive power requirements. This represents an improvement in switching performance and is not a limitation for applications designed for the IRFU3710ZPBF.

Q: Are both devices RoHS compliant?

A: The IRFU4510PBF is ROHS3 compliant. The IRFU3710ZPBF compliance status is not specified in the provided data. Both devices maintain identical REACH status (REACH Unaffected) and ECCN classification (EAR99).

Q: What is the moisture sensitivity level for both devices?

A: Both devices are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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