IRF3709ZSPBF N-Channel 30V 87A MOSFET Equivalent & Substitute Parts

Part Overview

The IRF3709ZSPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage with 87A continuous drain current at 25°C. The device is housed in a D2PAK surface mount package and features a maximum power dissipation of 79W. The IRF3709ZSPBF is classified as Obsolete, making identification of equivalent and substitute parts necessary for ongoing production support and design continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the D2PAK package form factor.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	87	A (Tc)
On-State Resistance (Rds On Max) @ 21A, 10V	6.3	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 250µA	2.25	V
Gate Charge (Qg Max) @ 4.5V	26	nC
Maximum Gate Voltage (Vgs Max)	±20	V
Input Capacitance (Ciss Max) @ 15V	2130	pF
Power Dissipation (Max)	79	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	D2PAK (TO-263-3)	Surface Mount
Moisture Sensitivity Level	1	Unlimited

Substitute Part Grouping Explanation

Substitute parts for the IRF3709ZSPBF are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
Package Type: Must be D2PAK (TO-263-3) surface mount
FET Type: Must be N-Channel MOSFET
Operating Temperature Range: Must support -55°C to 175°C
Mounting Type: Must be Surface Mount

Performance Consideration Parameters:

Continuous Drain Current (Id): Substitute must support minimum 87A at 25°C for direct replacement; higher ratings provide design margin
On-State Resistance (Rds On): Lower values indicate improved performance; higher values may require thermal management review
Gate Charge (Qg): Affects switching speed and driver requirements
Power Dissipation: Must support thermal load in application

The IRF3709ZSTRRPBF is an exact electrical equivalent with identical specifications, differentiated only by packaging format (Tape & Reel). The PSMN4R3-30BL,118 and PSMN017-30BL,118 from Nexperia USA Inc. are manufacturer-recommended alternatives with compatible voltage and package specifications but different current and thermal ratings.

Parameter Comparison

Parameter	IRF3709ZSPBF	IRF3709ZSTRRPBF	PSMN4R3-30BL,118	PSMN017-30BL,118
Manufacturer	Infineon Technologies	Infineon Technologies	Nexperia USA Inc.	Nexperia USA Inc.
Vdss (V)	30	30	30	30
Id @ 25°C (A Tc)	87	87	100	32
Rds On Max @ 10V (mOhm)	6.3 @ 21A	6.3 @ 21A	4.1 @ 15A	17 @ 10A
Vgs(th) Max (V)	2.25 @ 250µA	2.25 @ 250µA	2.15 @ 1mA	2.15 @ 1mA
Qg Max (nC)	26 @ 4.5V	26 @ 4.5V	41.5 @ 10V	10.7 @ 10V
Ciss Max (pF)	2130 @ 15V	2130 @ 15V	2400 @ 15V	552 @ 15V
Power Dissipation Max (W Tc)	79	79	103	47
Operating Temperature (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Package	D2PAK	D2PAK	D2PAK	D2PAK
Product Status	Obsolete	Not For New Designs	Active	Obsolete
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

IRF3709ZSTRRPBF (Infineon Technologies)

This part is an exact electrical equivalent to the IRF3709ZSPBF with identical electrical specifications. The sole difference is packaging format: IRF3709ZSTRRPBF is supplied in Tape & Reel format, while IRF3709ZSPBF is supplied in standard packaging. This part is classified as "Not For New Designs," indicating limited future availability. Current inventory is 3121 pieces. Use this substitute when existing designs require the exact electrical performance of the original part and Tape & Reel packaging is acceptable.

PSMN4R3-30BL,118 (Nexperia USA Inc.)

This part exceeds the current rating of the IRF3709ZSPBF (100A versus 87A) while maintaining the same 30V voltage rating and D2PAK package. The on-state resistance is lower (4.1 mOhm versus 6.3 mOhm), resulting in reduced power dissipation and improved thermal performance. Gate charge is higher (41.5 nC versus 26 nC), requiring consideration of driver capabilities. This part is classified as Active with 10750 pieces in inventory and is ROHS3 Compliant. Use this substitute for new designs or when improved current handling and thermal performance are beneficial.

PSMN017-30BL,118 (Nexperia USA Inc.)

This part has a lower continuous drain current rating (32A versus 87A) and higher on-state resistance (17 mOhm versus 6.3 mOhm) compared to the IRF3709ZSPBF. Gate charge is significantly lower (10.7 nC versus 26 nC), reducing driver requirements. This part is classified as Obsolete. Use this substitute only when application current requirements are below 32A and lower gate charge is advantageous. Not recommended for direct replacement in designs requiring full 87A capability.

Frequently Asked Questions (FAQ)

Q: Can IRF3709ZSTRRPBF be used as a direct replacement for IRF3709ZSPBF?

A: Yes. The IRF3709ZSTRRPBF is electrically identical to the IRF3709ZSPBF. Both devices have identical Vdss (30V), Id (87A), Rds On (6.3 mOhm), and all other electrical parameters. The only difference is packaging format: IRF3709ZSTRRPBF is supplied in Tape & Reel, while IRF3709ZSPBF is supplied in standard packaging. Both use the D2PAK package form factor and are compatible with the same PCB footprint.

Q: When should PSMN4R3-30BL,118 be selected over IRF3709ZSPBF?

A: PSMN4R3-30BL,118 should be selected when higher current capacity (100A versus 87A) or lower on-state resistance (4.1 mOhm versus 6.3 mOhm) provides design benefits. The higher gate charge (41.5 nC) must be accommodated by the gate driver circuit. PSMN4R3-30BL,118 is Active status with strong inventory availability, making it suitable for new designs. The improved thermal performance reduces power dissipation from 79W to 103W maximum capability.

Q: Is PSMN017-30BL,118 suitable for applications requiring 87A continuous current?

A: No. PSMN017-30BL,118 is rated for only 32A continuous drain current, which is insufficient for applications requiring 87A. This part is suitable only for applications with current requirements below 32A. Attempting to use this part in a 87A application will result in device failure due to exceeding maximum current rating.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All listed substitute parts use the D2PAK (TO-263-3) surface mount package. The physical footprint and pin configuration are identical across IRF3709ZSPBF, IRF3709ZSTRRPBF, PSMN4R3-30BL,118, and PSMN017-30BL,118. PCB layout modifications are not required for package compatibility.

Q: What is the impact of different gate charge values on circuit design?

A: Gate charge (Qg) affects the speed and power requirements of the gate driver circuit. IRF3709ZSPBF and IRF3709ZSTRRPBF have Qg of 26 nC. PSMN4R3-30BL,118 has higher Qg of 41.5 nC, requiring a more capable driver to achieve the same switching speed. PSMN017-30BL,118 has lower Qg of 10.7 nC, reducing driver requirements. Verify gate driver specifications support the selected device's gate charge before substitution.

Q: Which substitute part is recommended for new designs?

A: PSMN4R3-30BL,118 is recommended for new designs. It is classified as Active status, ensuring long-term availability. It is ROHS3 Compliant and has the highest inventory level (10750 pieces). The device exceeds the original specifications in current capacity and thermal performance while maintaining 30V voltage rating and D2PAK package compatibility.

Q: What compliance certifications apply to these parts?

A: All listed parts have REACH Unaffected status and ECCN classification EAR99. PSMN4R3-30BL,118 and PSMN017-30BL,118 are ROHS3 Compliant. IRF3709ZSTRRPBF is ROHS3 Compliant. IRF3709ZSPBF RoHS status is not specified in available documentation. Verify compliance requirements for your specific application and region before final part selection.

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