NDP7050L N-Channel MOSFET 50V 75A TO-220-3 Equivalent & Substitute Parts

Part Overview

The NDP7050L is an N-Channel MOSFET manufactured by onsemi, rated for 50V drain-to-source voltage and 75A continuous drain current in a Through Hole TO-220-3 package. This device is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. The NDP7050L serves applications requiring moderate voltage and high current switching capability with thermal management through the TO-220 package format.

Substiute Parts

NDP7050L

onsemiIn Stock: 897NDP7050L Datasheet

Current PartRFQ

IRL3705NPBF

Infineon TechnologiesIn Stock: 25207IRL3705NPBF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NDP7050L is determined by the following critical parameters:

Electrical Compatibility Requirements:

• FET Type: N-Channel topology must be maintained
• Drain to Source Voltage (Vdss): Substitute must equal or exceed 50V
• Continuous Drain Current (Id): Substitute must equal or exceed 75A at 25°C
• Power Dissipation: Substitute must equal or exceed 150W
• Gate Threshold Voltage (Vgs(th)): Must be compatible with 5V drive voltage
• On-State Resistance (Rds On): Lower values indicate improved performance

Mechanical Compatibility Requirements:

• Mounting Type: Through Hole required
• Package / Case: TO-220-3 or compatible TO-220 variant acceptable

The IRL3705NPBF from Infineon Technologies meets these substitution criteria with enhanced electrical performance characteristics while maintaining mechanical compatibility through the TO-220AB package format.

Parameter Comparison

Engineering Selection Recommendations

NDP7050L Status: The NDP7050L is classified as obsolete. While 789 pieces remain in stock from the original manufacturer, long-term procurement and design continuity cannot be assured through this part number.

IRL3705NPBF Substitution: The IRL3705NPBF is an active product from Infineon Technologies with 25,100 pieces in current inventory. This substitute exceeds the electrical performance requirements of the NDP7050L across all critical parameters:

• Vdss rating increased from 50V to 55V
• Continuous drain current increased from 75A to 89A
• Power dissipation increased from 150W to 170W
• On-state resistance reduced from 15 mOhm to 10 mOhm
• Gate charge reduced from 115 nC to 98 nC

Both parts carry identical REACH and ECCN classifications (REACH Unaffected, EAR99). The IRL3705NPBF is RoHS3 compliant. Both devices operate across overlapping temperature ranges, with the IRL3705NPBF minimum operating temperature at -55°C compared to -65°C for the NDP7050L.

The TO-220AB package of the IRL3705NPBF is mechanically compatible with TO-220-3 footprints in Through Hole applications. Pin configuration and thermal interface remain consistent with standard TO-220 mounting practices.

Frequently Asked Questions (FAQ)

Q: Can the IRL3705NPBF directly replace the NDP7050L in existing designs?

A: Yes. The IRL3705NPBF meets or exceeds all electrical specifications of the NDP7050L. The TO-220AB package is mechanically compatible with TO-220-3 footprints. No circuit modifications are required for direct substitution in Through Hole applications.

Q: What is the difference between TO-220-3 and TO-220AB packaging?

A: Both are Through Hole TO-220 variants with identical pin configurations and thermal characteristics. The designations reflect minor manufacturing or supplier variations. Both are compatible with standard TO-220 PCB footprints and heat sink mounting hardware.

Q: Why is the IRL3705NPBF rated for higher current (89A vs 75A)?

A: The IRL3705NPBF incorporates improved semiconductor technology with lower on-state resistance (10 mOhm vs 15 mOhm), enabling higher current handling at equivalent thermal dissipation. This represents a performance enhancement over the obsolete NDP7050L.

Q: Are there temperature range differences between these parts?

A: The NDP7050L operates from -65°C to 175°C, while the IRL3705NPBF operates from -55°C to 175°C. For applications requiring operation below -55°C, the NDP7050L extended lower temperature range must be verified as a design requirement. For standard industrial and commercial applications, both ranges are equivalent.

Q: What is the gate drive voltage compatibility?

A: Both parts have identical gate threshold voltage (Vgs(th)) of 2V @ 250µA. The NDP7050L specifies maximum gate voltage of ±20V, while the IRL3705NPBF specifies ±16V. Standard 5V or 10V gate drive circuits are compatible with both devices.

Q: How do the on-state resistance values compare?

A: The NDP7050L specifies 15 mOhm maximum at 37.5A with 5V gate drive. The IRL3705NPBF specifies 10 mOhm maximum at 46A with 10V gate drive. Lower on-state resistance reduces conduction losses and heat generation, improving overall circuit efficiency.

Q: Is the IRL3705NPBF suitable for high-frequency switching applications?

A: The IRL3705NPBF exhibits lower gate charge (98 nC vs 115 nC) and lower input capacitance (3600 pF vs 4000 pF) compared to the NDP7050L. These characteristics support faster switching transitions and reduced switching losses in high-frequency applications.

Q: What compliance certifications apply to both parts?

A: Both the NDP7050L and IRL3705NPBF carry REACH Unaffected and EAR99 ECCN classifications. The IRL3705NPBF is additionally RoHS3 compliant. Both devices have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life under standard storage conditions.