IRF3707ZPBF Equivalent & Substitute Parts

Part Overview

The IRF3707ZPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage with 59A continuous drain current at 25°C. This device features the HEXFET® series technology and is packaged in a Through Hole TO-220AB configuration. The IRF3707ZPBF is classified as Obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across electrical ratings, thermal characteristics, and mechanical packaging to ensure direct replacement capability.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	59	A (Tc)
On-State Resistance (Rds On Max) @ 10V	9.5	mOhm @ 21A
Gate Threshold Voltage (Vgs(th) Max)	2.25	V @ 25µA
Power Dissipation (Max)	57	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-220-3	Through Hole
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)

Substitute Part Grouping Explanation

Substitute parts for the IRF3707ZPBF are selected based on strict electrical and mechanical parameter compatibility. The substitution criteria are defined by the following parameters:

Primary Compatibility Parameters:

Drain to Source Voltage (Vdss): Must equal 30V
Package Type: Must be TO-220-3 (Through Hole TO-220AB)
FET Type: Must be N-Channel
Technology: Must be MOSFET (Metal Oxide)
Operating Temperature Range: Must support -55°C to 175°C (TJ)
Mounting Type: Must be Through Hole

Secondary Compatibility Parameters:

Continuous Drain Current (Id): Substitute must meet or exceed 59A @ 25°C
On-State Resistance (Rds On): Lower values indicate improved performance
Gate Threshold Voltage (Vgs(th)): Must be within ±20V maximum gate voltage specification
Power Dissipation: Higher ratings provide thermal margin

The identified substitute parts meet all primary compatibility parameters and maintain electrical performance within acceptable engineering tolerances for direct replacement applications.

Parameter Comparison

Parameter	IRF3707ZPBF	IRLB8721PBF	PSMN2R0-30PL,127	PSMN4R3-30PL,127
Manufacturer	Infineon Technologies	Infineon Technologies	Nexperia USA Inc.	Nexperia USA Inc.
Vdss (V)	30	30	30	30
Id @ 25°C (A)	59	62	100	100
Rds On (Max) @ 10V (mOhm)	9.5 @ 21A	8.7 @ 31A	2.1 @ 15A	4.3 @ 15A
Vgs(th) Max (V)	2.25 @ 25µA	2.35 @ 25µA	2.15 @ 1mA	2.15 @ 1mA
Gate Charge (Qg) Max (nC)	15 @ 4.5V	13 @ 4.5V	117 @ 10V	41.5 @ 10V
Power Dissipation Max (W)	57	65	211	103
Operating Temperature (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Package	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Product Status	Obsolete	Active	Obsolete	Obsolete
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

IRLB8721PBF (Infineon Technologies) - Primary Substitute

The IRLB8721PBF is the recommended primary substitute for the IRF3707ZPBF. This device maintains identical voltage and temperature specifications while providing improved electrical performance. The IRLB8721PBF delivers 62A continuous drain current compared to the IRF3707ZPBF's 59A, with lower on-state resistance (8.7mOhm vs. 9.5mOhm) and reduced gate charge (13nC vs. 15nC). The IRLB8721PBF holds Active product status and carries ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. Packaging remains identical TO-220-3 Through Hole configuration.

PSMN4R3-30PL,127 (Nexperia USA Inc.) - Secondary Substitute

The PSMN4R3-30PL,127 provides an alternative substitute with enhanced current handling capability (100A vs. 59A) and significantly improved power dissipation rating (103W vs. 57W). This device is suitable for applications requiring thermal margin or higher current capacity within the same 30V voltage class. The PSMN4R3-30PL,127 features lower on-state resistance (4.3mOhm) and maintains TO-220-3 packaging. ROHS3 compliance is confirmed. Gate charge is moderately elevated (41.5nC) compared to the primary substitute.

PSMN2R0-30PL,127 (Nexperia USA Inc.) - High-Performance Alternative

The PSMN2R0-30PL,127 represents a high-performance option with maximum current rating of 100A and exceptional power dissipation capability (211W). This device exhibits the lowest on-state resistance (2.1mOhm) among substitute options, making it suitable for applications prioritizing efficiency and thermal performance. Gate charge is significantly elevated (117nC @ 10V), which may impact switching frequency performance in high-speed applications. ROHS3 compliance and TO-220-3 packaging are maintained.

Frequently Asked Questions (FAQ)

Q: Can the IRLB8721PBF directly replace the IRF3707ZPBF without circuit modification?

A: Yes. The IRLB8721PBF maintains identical Vdss (30V), operating temperature range (-55°C to 175°C), and TO-220-3 packaging. Electrical performance is improved across all key parameters. No circuit modification is required for direct substitution.

Q: What is the primary difference between PSMN4R3-30PL,127 and PSMN2R0-30PL,127?

A: Both devices share identical voltage (30V) and current (100A) ratings with TO-220-3 packaging. The PSMN2R0-30PL,127 provides superior on-state resistance (2.1mOhm vs. 4.3mOhm) and power dissipation (211W vs. 103W), but exhibits higher gate charge (117nC vs. 41.5nC). Selection depends on application requirements for switching speed versus thermal performance.

Q: Why is the IRF3707ZPBF classified as Obsolete?

A: The IRF3707ZPBF is listed as Obsolete by the manufacturer. The IRLB8721PBF (Active status) is the recommended replacement for new designs and ongoing procurement. Existing inventory of IRF3707ZPBF remains available but future availability cannot be guaranteed.

Q: Are all substitute parts RoHS compliant?

A: The IRLB8721PBF, PSMN4R3-30PL,127, and PSMN2R0-30PL,127 all carry ROHS3 compliance certification. All devices are REACH Unaffected and classified under ECCN EAR99.

Q: What is the significance of gate charge (Qg) differences among substitutes?

A: Gate charge affects switching speed and driver circuit requirements. The IRF3707ZPBF and IRLB8721PBF have lower gate charge (15nC and 13nC respectively), suitable for standard gate driver circuits. The PSMN2R0-30PL,127 (117nC) requires higher gate charge delivery and may necessitate driver circuit evaluation for high-frequency switching applications.

Q: Can PSMN series devices be used in applications originally designed for HEXFET® series?

A: Yes. Both HEXFET® (Infineon) and PSMN series (Nexperia) are N-Channel MOSFETs with identical voltage and temperature specifications. Mechanical packaging (TO-220-3) and electrical compatibility are maintained. Verify gate charge and on-state resistance compatibility with existing gate driver circuits.

Q: What inventory status should be considered for procurement?

A: The IRLB8721PBF has the highest inventory availability (15,465 Pcs), followed by PSMN2R0-30PL,127 (10,198 Pcs) and PSMN4R3-30PL,127 (5,596 Pcs). The IRF3707ZPBF shows 4,100 Pcs in stock but is Obsolete. For new designs, prioritize Active status parts (IRLB8721PBF).

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