IRF9640 Equivalent & Substitute Parts

Part Overview

The IRF9640 is a P-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) rated for 200V drain-to-source voltage with 11A continuous drain current at 25°C. The device is housed in a Through Hole TO-220AB package and dissipates up to 125W at the case temperature. The IRF9640 is classified as obsolete product status, 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

IRF9640

Vishay SiliconixIn Stock: 1923IRF9640 Datasheet

Current PartRFQ

IRF9640PBF

Vishay SiliconixIn Stock: 93141IRF9640PBF Datasheet

DirectRFQ

IRF9640PBF-BE3

Vishay SiliconixIn Stock: 1541IRF9640PBF-BE3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRF9640 are qualified based on strict electrical and mechanical parameter matching. All substitute candidates must satisfy the following criteria:

Electrical Parameters (Must Match):

• Drain to Source Voltage (Vdss): 200V
• Continuous Drain Current (Id) @ 25°C: 11A (Tc)
• Rds On (Max) @ Id, Vgs: 500mOhm @ 6.6A, 10V
• Vgs(th) (Max) @ Id: 4V @ 250µA
• Gate Charge (Qg) (Max) @ Vgs: 44nC @ 10V
• Vgs (Max): ±20V
• Input Capacitance (Ciss) (Max) @ Vds: 1200pF @ 25V
• Power Dissipation (Max): 125W (Tc)
• Operating Temperature Range: -55°C to 150°C (TJ)

Mechanical Parameters (Must Match):

• FET Type: P-Channel
• Technology: MOSFET (Metal Oxide)
• Mounting Type: Through Hole
• Package / Case: TO-220-3

All identified substitute parts meet these requirements and are manufactured by Vishay Siliconix under the IRF9640 base product number designation.

Parameter Comparison

Engineering Selection Recommendations

IRF9640PBF is the primary direct substitute for the obsolete IRF9640. This part maintains identical electrical and mechanical specifications while offering active product status from Vishay Siliconix. The IRF9640PBF is ROHS3 compliant and REACH affected, making it suitable for applications subject to environmental and regulatory compliance requirements. Inventory availability is substantial at 93,100 pieces.

IRF9640PBF-BE3 is a parametric equivalent substitute with identical electrical and mechanical characteristics. This variant is also active and ROHS3 compliant. REACH status is listed as vendor undefined. Inventory availability is 1,442 pieces. This part is suitable for applications where the specific packaging variant or supplier designation is required.

Both substitute parts eliminate the obsolescence risk associated with the IRF9640 while maintaining full electrical and mechanical compatibility. Selection between IRF9640PBF and IRF9640PBF-BE3 depends on supply chain requirements, packaging specifications, and regulatory compliance documentation needs.

Frequently Asked Questions (FAQ)

Q: Can IRF9640PBF be used as a direct replacement for IRF9640?

A: Yes. The IRF9640PBF is a direct substitute. All electrical parameters including Vdss (200V), Id (11A), Rds On (500mOhm), gate charge (44nC), and operating temperature range (-55°C to 150°C) are identical. The mechanical package (TO-220-3, Through Hole) is identical. No circuit modifications are required.

Q: What is the difference between IRF9640PBF and IRF9640PBF-BE3?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The primary differences are packaging designation (Tube for both) and REACH compliance status. IRF9640PBF is REACH affected; IRF9640PBF-BE3 is vendor undefined for REACH status. Both are ROHS3 compliant.

Q: Why is the original IRF9640 listed as obsolete?

A: The IRF9640 has been superseded by active variants IRF9640PBF and IRF9640PBF-BE3. These active parts provide improved compliance status (ROHS3 compliant versus non-compliant) and better long-term supply availability.

Q: Are there any electrical performance differences between the three parts?

A: No. All three parts—IRF9640, IRF9640PBF, and IRF9640PBF-BE3—share identical electrical specifications: 200V Vdss, 11A continuous drain current, 500mOhm Rds On, 44nC gate charge, ±20V Vgs maximum, 1200pF input capacitance, and 125W power dissipation.

Q: Can these parts be used in high-temperature applications?

A: Yes. All three parts are rated for operating junction temperatures from -55°C to 150°C (TJ), supporting applications across this full temperature range.

Q: What is the significance of the TO-220-3 package?

A: The TO-220-3 package is a three-lead Through Hole configuration with standardized pin spacing and mounting hole dimensions. All three parts use this identical package, ensuring mechanical interchangeability without PCB redesign.

Q: Which substitute part should be selected for new designs?

A: IRF9640PBF is recommended for new designs due to active product status, ROHS3 compliance, and substantial inventory availability (93,100 pieces). This part provides the best long-term supply security and regulatory compliance documentation.