IRF3709ZCSTRR N-Channel 30V 87A MOSFET Equivalent & Substitute Parts

Part Overview

The IRF3709ZCSTRR 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 packaged in D2PAK (TO-263-3) surface mount configuration and is part of the HEXFET® series. The IRF3709ZCSTRR is classified as Obsolete, making identification of equivalent and substitute parts essential for ongoing production support and design continuity. Equivalent parts must maintain electrical compatibility across voltage ratings, current handling, on-resistance characteristics, and thermal performance while accommodating packaging and compliance requirements.

Substiute Parts

IRF3709ZCSTRR

Infineon TechnologiesIn Stock: 913IRF3709ZCSTRR Datasheet

Current PartRFQ

IRF3709ZSTRRPBF

Infineon TechnologiesIn Stock: 3231IRF3709ZSTRRPBF Datasheet

Parametric EquivalentRFQ

PSMN017-30BL,118

Nexperia USA Inc.In Stock: 2850PSMN017-30BL,118 Datasheet

MFR RecommendedRFQ

PSMN4R3-30BL,118

Nexperia USA Inc.In Stock: 10797PSMN4R3-30BL,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF3709ZCSTRR is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

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

Secondary Compatibility Criteria:

• Continuous Drain Current (Id): Substitute must meet or exceed 87A at 25°C
• On-Resistance (Rds On): Lower or equal values are acceptable
• Gate Charge (Qg): Values within the specified range maintain switching characteristics
• Power Dissipation: Must support minimum 79W (Tc)
• Gate Threshold Voltage (Vgs(th)): Must be within ±20V maximum gate voltage specification

Substitutes are grouped into two categories: Parametric Equivalents (identical electrical specifications) and Manufacturer Recommended Alternatives (meeting or exceeding performance requirements with different current ratings).

Parameter Comparison

Engineering Selection Recommendations

IRF3709ZSTRRPBF (Infineon Technologies)

This part is a parametric equivalent to the IRF3709ZCSTRR, maintaining identical electrical specifications including 87A continuous drain current, 6.3mOhm on-resistance, and 79W power dissipation. The IRF3709ZSTRRPBF is classified as "Not For New Designs" but remains available with 3121 pieces in stock. This substitute is ROHS3 compliant, addressing environmental and regulatory requirements that the original obsolete part does not meet. Selection of this part is appropriate for legacy system support and production continuity where electrical performance must remain unchanged.

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

This part exceeds the performance requirements of the IRF3709ZCSTRR with 100A continuous drain current (versus 87A) and superior on-resistance of 4.1mOhm at 15A, 10V (versus 6.3mOhm at 21A, 10V). Power dissipation capability is 103W (Tc), exceeding the 79V requirement. The PSMN4R3-30BL,118 is classified as Active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance and 10,750 pieces in stock provide regulatory alignment and procurement security. This substitute is suitable for new designs and applications requiring enhanced thermal performance and current handling capacity within the 30V voltage class.

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

This part is a lower-current alternative rated for 32A continuous drain current, below the 87A specification of the IRF3709ZCSTRR. On-resistance is 17mOhm at 10A, 10V, significantly higher than the original part. Power dissipation is limited to 47W (Tc). The PSMN017-30BL,118 is classified as Obsolete and is not recommended as a direct substitute for applications requiring the full 87A current rating. This part may be considered only for applications with reduced current requirements where the 30V voltage rating and D2PAK package are the primary selection criteria.

Frequently Asked Questions (FAQ)

Q: Can the IRF3709ZSTRRPBF be used as a direct replacement for the IRF3709ZCSTRR?

A: Yes. The IRF3709ZSTRRPBF is a parametric equivalent with identical electrical specifications: 30V Vdss, 87A continuous drain current, 6.3mOhm on-resistance, and 79W power dissipation. Both devices use D2PAK packaging. The primary difference is RoHS compliance status (ROHS3 Compliant versus Non-compliant) and product lifecycle status (Not For New Designs versus Obsolete). Electrical performance and thermal characteristics are equivalent.

Q: Is the PSMN4R3-30BL,118 a suitable substitute for high-current applications?

A: Yes, for applications requiring enhanced current handling. The PSMN4R3-30BL,118 provides 100A continuous drain current, exceeding the 87A rating of the IRF3709ZCSTRR. On-resistance is lower at 4.1mOhm, resulting in reduced power dissipation and improved thermal performance. Power dissipation capability is 103W (Tc) versus 79W (Tc). The part maintains 30V Vdss and D2PAK packaging. Active product status ensures long-term availability.

Q: Why is the PSMN017-30BL,118 listed as a substitute if it has lower current rating?

A: The PSMN017-30BL,118 is listed based on the provided substitute relationships but is not recommended as a primary replacement for the IRF3709ZCSTRR due to insufficient current rating (32A versus 87A). This part is suitable only for applications with reduced current requirements where the 30V voltage rating and D2PAK package are primary selection criteria. Thermal and electrical performance will be limited compared to the original specification.

Q: What are the key differences between Infineon and Nexperia substitutes?

A: Infineon's IRF3709ZSTRRPBF maintains identical electrical specifications to the original IRF3709ZCSTRR. Nexperia's PSMN4R3-30BL,118 offers enhanced performance with higher current rating (100A) and lower on-resistance (4.1mOhm). Both manufacturers provide ROHS3 compliance. Nexperia's PSMN4R3-30BL,118 is Active product status, ensuring superior supply chain availability compared to obsolete or "Not For New Designs" classifications.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts—IRF3709ZSTRRPBF, PSMN4R3-30BL,118, and PSMN017-30BL,118—are available in Tape & Reel (TR) packaging format, maintaining compatibility with automated assembly processes.

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

A: Gate charge affects switching speed and gate drive requirements. The IRF3709ZCSTRR and IRF3709ZSTRRPBF both specify 26nC @ 4.5V. The PSMN4R3-30BL,118 specifies 41.5nC @ 10V, requiring higher gate drive energy. The PSMN017-30BL,118 specifies 10.7nC @ 10V, requiring lower gate drive energy. Gate drive circuits must be evaluated for compatibility with substitute parts having different Qg specifications.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance is a regulatory and environmental requirement that does not affect electrical performance, thermal characteristics, or switching behavior. ROHS3 compliant parts (IRF3709ZSTRRPBF, PSMN4R3-30BL,118, PSMN017-30BL,118) meet environmental standards while maintaining equivalent or superior electrical specifications compared to non-compliant parts.