IRFSL3207 N-Channel MOSFET 75V 180A Equivalent & Substitute Parts

Part Overview

The IRFSL3207 is an N-Channel MOSFET manufactured by Infineon Technologies, designed for high-current switching applications requiring 75V drain-to-source voltage capability and 180A continuous drain current at 25°C. This device features a Through Hole TO-262 package configuration and is rated for 330W maximum power dissipation. The IRFSL3207 is classified as an obsolete product, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current handling, on-resistance characteristics, and thermal performance while meeting current manufacturing and compliance standards.

Substiute Parts

IRFSL3207

Infineon TechnologiesIn Stock: 3634IRFSL3207 Datasheet

Current PartRFQ

IRFSL3207ZPBF

Infineon TechnologiesIn Stock: 1579IRFSL3207ZPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IRFSL3207 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: Substitute parts must maintain the 75V Vdss rating to ensure safe operation within the same circuit topology and voltage stress limits.

Package Configuration: All substitutes must utilize the TO-262-3 Through Hole package to maintain mechanical compatibility with existing PCB layouts and assembly processes.

Current Handling: While the IRFSL3207 specifies 180A continuous drain current, substitute parts with lower current ratings (120A or greater) remain functionally compatible when the application circuit design does not require the full 180A capacity. The substitute must not exceed the original voltage and temperature specifications.

On-Resistance Characteristics: Rds On values must be within acceptable limits to prevent excessive power dissipation and thermal runaway. The IRFSL3207 specifies 4.5mOhm maximum; substitutes with equal or lower on-resistance maintain thermal performance equivalence.

Gate Drive Requirements: Gate threshold voltage and gate charge specifications must remain compatible with existing driver circuits. The ±20V maximum gate voltage specification must be maintained.

Thermal and Compliance Status: Substitute parts must meet current RoHS and REACH compliance requirements, with active product status preferred for long-term supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

IRFSL3207ZPBF as Primary Substitute:

The IRFSL3207ZPBF is the manufacturer-recommended substitute for the obsolete IRFSL3207. Both devices share identical voltage ratings (75V Vdss), package configuration (TO-262-3 Through Hole), and operating temperature range (-55°C to 175°C). The IRFSL3207ZPBF maintains electrical compatibility through equivalent gate threshold voltage (4V) and superior on-resistance performance (4.1mOhm versus 4.5mOhm), resulting in lower power dissipation and improved thermal efficiency.

Compliance Advantage:

The IRFSL3207ZPBF achieves ROHS3 compliance, addressing regulatory requirements for new product designs and manufacturing environments subject to RoHS directives. The original IRFSL3207 is non-compliant, making the ZPBF variant the appropriate choice for applications requiring compliance documentation.

Current Rating Consideration:

The IRFSL3207ZPBF specifies 120A continuous drain current compared to the original 180A rating. This reduction is acceptable for applications where the circuit design does not demand the full 180A capacity. Thermal analysis must confirm that the 300W maximum power dissipation of the ZPBF variant is sufficient for the intended application. If the application requires sustained operation at or near 180A, alternative high-current N-Channel MOSFETs with 75V rating and 180A+ current capability must be evaluated.

Supply Chain Reliability:

The IRFSL3207ZPBF carries Active product status with 1529 pieces in stock, ensuring availability for production and design transitions. The obsolete status of the original IRFSL3207 creates supply chain risk for new procurements.

Frequently Asked Questions (FAQ)

Q: Can the IRFSL3207ZPBF directly replace the IRFSL3207 in existing designs?

A: The IRFSL3207ZPBF is electrically compatible with the IRFSL3207 across voltage rating, package type, and operating temperature range. The primary difference is the reduced continuous drain current specification (120A versus 180A). Direct replacement is valid if the application circuit does not require sustained operation above 120A continuous drain current. Thermal analysis of the application is required to confirm that 300W maximum power dissipation is adequate.

Q: What is the significance of the lower gate charge (170 nC versus 260 nC) in the IRFSL3207ZPBF?

A: Lower gate charge reduces the energy required to switch the MOSFET on and off, resulting in faster switching transitions and reduced driver circuit stress. This is a performance advantage that does not affect substitution compatibility. Existing gate driver circuits designed for the original 260 nC specification will operate correctly with the lower gate charge device.

Q: Are there any package or pinout differences between the IRFSL3207 and IRFSL3207ZPBF?

A: Both devices use the TO-262-3 Long Leads package configuration with identical pinout. No PCB layout modifications are required for substitution.

Q: Why does the IRFSL3207ZPBF have lower input capacitance (6920 pF versus 7600 pF)?

A: Input capacitance variation is a result of the lower current rating and optimized die design in the ZPBF variant. Lower input capacitance reduces gate drive power requirements and improves switching speed. This does not affect substitution compatibility.

Q: What compliance certifications apply to the IRFSL3207ZPBF?

A: The IRFSL3207ZPBF is ROHS3 compliant and REACH unaffected. The original IRFSL3207 is RoHS non-compliant. For applications subject to RoHS directives or customer compliance requirements, the ZPBF variant is the appropriate selection.

Q: If my application requires 180A continuous current, what alternatives exist?

A: The IRFSL3207ZPBF is rated for 120A continuous drain current. Applications requiring sustained 180A operation must evaluate alternative N-Channel MOSFETs with 75V Vdss rating and 180A or higher current capability from Infineon or other manufacturers. Consult the component supplier for high-current 75V MOSFET options in TO-262 packaging.

Q: Is the IRFSL3207ZPBF available in different packaging options?

A: The IRFSL3207ZPBF is supplied in Tube packaging for the TO-262-3 Through Hole configuration. No surface-mount or alternative package variants are specified in the provided data.