IRF624 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF624 is an N-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) rated for 250V drain-to-source voltage with a continuous drain current of 4.4A at 25°C. The device is packaged in a TO-220AB through-hole configuration and dissipates up to 50W under thermal conditions. The IRF624 is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing production support. Substitute parts must maintain identical electrical characteristics and mechanical compatibility to ensure direct replacement without circuit redesign.

Substiute Parts

IRF624

Vishay SiliconixIn Stock: 4376IRF624 Datasheet

Current PartRFQ

IRF624PBF

Vishay SiliconixIn Stock: 1260IRF624PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF624 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match Exactly):

• 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: 1.1Ohm @ 2.6A, 10V
• Gate Threshold Voltage (Vgs(th)) @ Id: 4V @ 250µA
• Gate Charge (Qg) @ Vgs: 14nC @ 10V
• Maximum Gate Voltage (Vgs): ±20V
• Input Capacitance (Ciss) @ Vds: 260pF @ 25V
• Power Dissipation (Max): 50W (Tc)
• Operating Temperature Range: -55°C to 150°C (TJ)

Mechanical Parameters (Must Match Exactly):

• Mounting Type: Through Hole
• Package / Case: TO-220-3

The IRF624PBF qualifies as a direct substitute based on complete parameter equivalence across all electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The IRF624PBF is the direct equivalent substitute for the obsolete IRF624. Both parts are manufactured by Vishay Siliconix and share identical electrical and mechanical specifications across all rated parameters.

Selection Basis:

The IRF624PBF is recommended for replacement applications based on the following factors:

1. Product Status: The IRF624 is classified as obsolete, while the IRF624PBF maintains active product status, ensuring continued availability and manufacturing support.

2. Electrical Equivalence: All electrical parameters are identical, including Vdss (250V), Id (4.4A @ 25°C), Rds On (1.1Ohm @ 2.6A, 10V), gate threshold voltage, gate charge, and operating temperature range (-55°C to 150°C).

3. Mechanical Compatibility: Both devices use the TO-220-3 package with through-hole mounting, enabling direct PCB replacement without layout modification.

4. Regulatory Compliance: The IRF624PBF achieves RoHS3 compliance, whereas the IRF624 is RoHS non-compliant. This compliance improvement supports modern manufacturing and environmental standards.

5. Moisture Sensitivity: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage or handling.

6. Trade Compliance: Both parts maintain identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications.

Frequently Asked Questions (FAQ)

Q: Can the IRF624PBF be used as a direct replacement for the IRF624 in existing designs?

A: Yes. The IRF624PBF is electrically and mechanically identical to the IRF624 across all specified parameters. No circuit redesign or PCB layout modification is required. The TO-220-3 package pinout and electrical ratings are fully compatible.

Q: What is the primary difference between the IRF624 and IRF624PBF?

A: The IRF624 is obsolete, while the IRF624PBF is an active product. The IRF624PBF also achieves RoHS3 compliance, whereas the IRF624 is RoHS non-compliant. All electrical and mechanical specifications remain identical.

Q: Are there any packaging differences between these parts?

A: Both parts use the TO-220-3 package for through-hole mounting. The IRF624 is supplied in standard packaging, while the IRF624PBF is supplied in tube packaging. This difference does not affect electrical performance or mechanical compatibility.

Q: What parameters must match for a part to substitute the IRF624?

A: A substitute must match all of the following: N-Channel MOSFET technology, 250V Vdss, 4.4A continuous drain current at 25°C, 1.1Ohm Rds On at 2.6A and 10V gate voltage, 4V gate threshold voltage at 250µA, 14nC gate charge at 10V, ±20V maximum gate voltage, 260pF input capacitance at 25V, 50W power dissipation, -55°C to 150°C operating temperature range, and TO-220-3 through-hole package.

Q: Is the IRF624PBF suitable for new production designs?

A: Yes. The IRF624PBF is an active product with RoHS3 compliance, making it the appropriate choice for new designs requiring this device specification. The obsolete IRF624 should not be used in new production.

Q: What is the moisture sensitivity level for these parts?

A: Both the IRF624 and IRF624PBF carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints. These parts do not require special moisture control during storage or handling.

Q: Are there any compliance or regulatory differences?

A: The IRF624PBF achieves RoHS3 compliance, while the IRF624 is RoHS non-compliant. Both parts maintain identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications. The IRF624PBF is REACH Unaffected.