IRFZ48NLPBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRFZ48NLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage and 64A continuous drain current in a TO-262 through-hole package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The HEXFET® series component operates across a temperature range of -55°C to 175°C and is suitable for power switching applications requiring moderate voltage and high current handling.

Substiute Parts

IRFZ48NLPBF

Infineon TechnologiesIn Stock: 852IRFZ48NLPBF Datasheet

Current PartRFQ

IPI45N06S4L08AKSA1

Infineon TechnologiesIn Stock: 970IPI45N06S4L08AKSA1 Datasheet

MFR RecommendedRFQ

IPI50N10S3L16AKSA1

Infineon TechnologiesIn Stock: 765IPI50N10S3L16AKSA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFZ48NLPBF is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss) must equal or exceed 55V
• Continuous Drain Current (Id) must equal or exceed 64A
• On-State Resistance (Rds On) must not exceed the original specification to maintain thermal performance
• Gate Threshold Voltage (Vgs(th)) must be compatible with existing drive circuitry
• Operating temperature range must span -55°C to 175°C

Mechanical Compatibility Criteria:

• Package type must be TO-262-3 (TO-262 Long Leads, I2PAK, TO-262AA)
• Mounting type must be Through Hole
• Pin configuration must match TO-262-3 standard

Regulatory & Compliance Criteria:

• Moisture Sensitivity Level (MSL) must be 1 (Unlimited)
• REACH and ECCN compliance status must be maintained

Two substitute parts meet these criteria with varying electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

IPI45N06S4L08AKSA1 Selection Criteria:

This substitute is suitable for applications where the original 64A continuous drain current requirement can be reduced to 45A. The IPI45N06S4L08AKSA1 offers improved on-state resistance (8.2 mOhm versus 14 mOhm), lower gate charge (64 nC versus 81 nC), and lower gate threshold voltage (2.2V versus 4V). The higher Vdss rating (60V versus 55V) provides additional voltage margin. Product status is Active, ensuring long-term availability and supply chain stability. RoHS3 compliance is confirmed. This part is recommended for new designs or applications with reduced current requirements.

IPI50N10S3L16AKSA1 Selection Criteria:

This substitute accommodates applications requiring higher voltage headroom with a 100V Vdss rating while maintaining 50A continuous drain current. The on-state resistance (15.7 mOhm) is comparable to the original specification. Gate charge and threshold voltage are optimized for modern drive circuitry. Product status is Last Time Buy, indicating limited future availability. RoHS3 compliance is confirmed. This part is suitable for designs requiring higher voltage operation or as a bridge solution during the transition from the obsolete IRFZ48NLPBF.

Both substitutes maintain TO-262-3 through-hole packaging, MSL 1 moisture sensitivity, REACH compliance, and EAR99 export classification, ensuring mechanical and regulatory compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can the IPI45N06S4L08AKSA1 directly replace the IRFZ48NLPBF in all applications?

A: The IPI45N06S4L08AKSA1 is mechanically and electrically compatible in TO-262-3 through-hole applications. However, the continuous drain current rating is reduced from 64A to 45A. Substitution is valid only if the application current requirement does not exceed 45A. The improved on-state resistance and lower gate charge may provide performance benefits in switching applications.

Q: What is the difference between the two substitute parts?

A: The IPI45N06S4L08AKSA1 is optimized for 60V operation with 45A current rating and lower on-state resistance. The IPI50N10S3L16AKSA1 is optimized for 100V operation with 50A current rating. Selection depends on the voltage and current requirements of the target application. The IPI50N10S3L16AKSA1 has Last Time Buy status, while the IPI45N06S4L08AKSA1 has Active status.

Q: Are the substitute parts pin-compatible with the IRFZ48NLPBF?

A: Both substitute parts use the TO-262-3 package with standard through-hole pin configuration. Pin compatibility is confirmed for direct PCB mounting. No layout modifications are required.

Q: What is the impact of higher input capacitance in the substitute parts?

A: The IPI45N06S4L08AKSA1 and IPI50N10S3L16AKSA1 have higher input capacitance (4780 pF and 4180 pF respectively) compared to the IRFZ48NLPBF (1970 pF). This requires higher gate drive current for equivalent switching speed. Existing gate drive circuits must be evaluated for compatibility.

Q: Are the substitute parts RoHS compliant?

A: The IPI45N06S4L08AKSA1 and IPI50N10S3L16AKSA1 are both RoHS3 compliant. The original IRFZ48NLPBF does not specify RoHS status. Both substitutes meet current environmental and regulatory requirements.

Q: What is the significance of "Last Time Buy" status for the IPI50N10S3L16AKSA1?

A: Last Time Buy status indicates that Infineon Technologies will discontinue this part after a specified date. Existing inventory is available, but future procurement may not be possible. For long-term production, the IPI45N06S4L08AKSA1 with Active status is recommended.

Q: Can both substitute parts be used interchangeably in the same design?

A: Both parts are mechanically compatible but have different electrical specifications. They cannot be used interchangeably without circuit analysis. The choice depends on the specific voltage and current requirements of the application. Thermal and switching performance must be re-evaluated for each substitute.