IRF624S N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF624S is an N-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) manufactured by Vishay Siliconix, rated for 250V drain-to-source voltage with 4.4A continuous drain current. The device is housed in a Surface Mount TO-263 (D2PAK) package and is designed for general-purpose switching applications requiring moderate voltage and current ratings.

The IRF624S carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

IRF624S

Vishay SiliconixIn Stock: 738IRF624S Datasheet

Current PartRFQ

IRF624SPBF

Vishay SiliconixIn Stock: 2391IRF624SPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF624S is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match):

• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Drain to Source Voltage (Vdss): 250V
• Continuous Drain Current (Id) @ 25°C: 4.4A (Tc)
• Drive Voltage (Max Rds On): 10V
• Rds On (Max) @ Id, Vgs: 1.1 Ohm @ 2.6A, 10V
• Vgs(th) (Max) @ Id: 4V @ 250µA
• Gate Charge (Qg) (Max) @ Vgs: 14 nC @ 10V
• Vgs (Max): ±20V
• Input Capacitance (Ciss) (Max) @ Vds: 260 pF @ 25V
• Power Dissipation (Max): 3.1W (Ta), 50W (Tc)
• Operating Temperature: -55°C to 150°C (TJ)

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts meeting these exact specifications are electrically and mechanically interchangeable with the IRF624S in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The IRF624SPBF is a direct electrical and mechanical equivalent to the IRF624S. Both parts share identical electrical specifications across all rated parameters, including voltage, current, on-resistance, gate charge, and thermal characteristics. Both are housed in the TO-263 (D2PAK) Surface Mount package with identical pin configurations and mechanical footprints.

The primary distinction between the two parts is product status and regulatory compliance. The IRF624S is classified as Obsolete and carries RoHS non-compliant status. The IRF624SPBF is classified as Active and is ROHS3 Compliant, indicating current manufacturing availability and compliance with Restriction of Hazardous Substances regulations.

For new designs or ongoing production requiring compliance with modern regulatory standards, the IRF624SPBF is the appropriate selection. For legacy system repairs or applications where RoHS compliance is not a requirement, either part is electrically and mechanically suitable. The IRF624SPBF offers the additional advantage of confirmed current availability (2299 units in stock versus 685 units for the obsolete IRF624S).

Frequently Asked Questions (FAQ)

Q: Can the IRF624SPBF be used as a direct replacement for the IRF624S?

A: Yes. The IRF624SPBF is electrically and mechanically identical to the IRF624S. All electrical parameters, including voltage rating, current rating, on-resistance, gate charge, and thermal specifications, are identical. Both parts use the same TO-263 (D2PAK) Surface Mount package with identical pin assignments and mechanical footprints. Direct substitution is possible without circuit modification.

Q: What is the difference between IRF624S and IRF624SPBF?

A: The IRF624S is classified as Obsolete with RoHS non-compliant status. The IRF624SPBF is classified as Active with ROHS3 Compliant status. Electrically and mechanically, the parts are identical. The suffix "PBF" in IRF624SPBF indicates lead-free (Pb-free) manufacturing, which aligns with RoHS3 compliance requirements.

Q: Are there any package or pinout differences between these parts?

A: No. Both the IRF624S and IRF624SPBF use the TO-263-3 (D2PAK) Surface Mount package with 2 leads plus tab. Pin assignments, mechanical dimensions, and PCB footprints are identical. No layout or assembly modifications are required for substitution.

Q: Which part should be selected for new designs?

A: The IRF624SPBF should be selected for new designs. It is classified as Active, ensuring ongoing manufacturing availability and supply chain reliability. It is also ROHS3 Compliant, meeting current regulatory requirements for hazardous substance restrictions.

Q: Can the IRF624S be used in applications requiring RoHS compliance?

A: No. The IRF624S is classified as RoHS non-compliant. Applications requiring RoHS compliance must use the IRF624SPBF, which is ROHS3 Compliant.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both the IRF624S and IRF624SPBF have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly.

Q: Are there inventory considerations when selecting between these parts?

A: Yes. The IRF624SPBF has 2299 units in stock, while the IRF624S has 685 units in stock. For applications requiring immediate availability or larger quantities, the IRF624SPBF is the preferred selection.