IRF9640L MOSFET P-Channel 200V 11A Equivalent & Substitute Parts

Part Overview

The IRF9640L is a P-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) rated for 200V drain-to-source voltage and 11A continuous drain current. This device is packaged in the I2PAK (TO-262-3) through-hole configuration and is designed for applications requiring moderate power dissipation with compact form factor. The IRF9640L is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with different packaging configurations.

Substiute Parts

IRF9640L

Vishay SiliconixIn Stock: 1704IRF9640L Datasheet

Current PartRFQ

IRF9640PBF

Vishay SiliconixIn Stock: 93141IRF9640PBF Datasheet

MFR RecommendedRFQ

IRF9640LPBF

Vishay SiliconixIn Stock: 799IRF9640LPBF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF9640L is determined by electrical parameter equivalence and mechanical compatibility. The critical parameters governing substitution are:

Electrical Parameters (Must Match):

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

Mechanical Parameters:

• Mounting Type: Through Hole
• Base Product Number: IRF9640

The IRF9640L operates as the base product within the IRF9640 family. Substitutes within this family maintain identical electrical characteristics but may differ in packaging configuration (I2PAK versus TO-220AB) and product status (obsolete versus active). All substitute parts are manufactured by Vishay Siliconix and share the same fundamental semiconductor technology and performance envelope.

Parameter Comparison

Engineering Selection Recommendations

IRF9640LPBF (Parametric Equivalent): The IRF9640LPBF is the direct parametric equivalent to the IRF9640L. This part maintains identical electrical specifications and packaging configuration (I2PAK/TO-262-3). The IRF9640LPBF is classified as active product status and is ROHS3 compliant, making it the preferred selection for new designs and production continuity. The IRF9640LPBF is available in tube packaging and provides 732 units in current inventory. This part requires no circuit board redesign and presents no mechanical compatibility concerns.

IRF9640PBF (Functional Substitute): The IRF9640PBF is a functional substitute that maintains all electrical specifications but differs in packaging configuration. This part is packaged in TO-220AB (TO-220-3) through-hole format rather than I2PAK. The IRF9640PBF is classified as active product status and is ROHS3 compliant. Selection of this part requires printed circuit board layout modification to accommodate the different lead spacing and form factor of the TO-220AB package. The IRF9640PBF offers significantly higher inventory availability (93,100 units) and may be selected when board redesign is feasible or when TO-220AB mounting is preferred for thermal management or mechanical considerations.

Product Status and Compliance: The IRF9640L is obsolete and RoHS non-compliant. Both substitute parts are active and ROHS3 compliant, meeting current regulatory requirements for new production and design implementations.

Frequently Asked Questions (FAQ)

Q: Can the IRF9640LPBF directly replace the IRF9640L without circuit board modification?

A: Yes. The IRF9640LPBF is a parametric equivalent with identical electrical specifications and I2PAK packaging. No circuit board redesign is required for this substitution.

Q: What is the primary difference between the IRF9640PBF and IRF9640LPBF?

A: The primary difference is packaging configuration. The IRF9640PBF uses TO-220AB (TO-220-3) packaging, while the IRF9640LPBF uses I2PAK (TO-262-3) packaging. All electrical parameters are identical. The TO-220AB package has different lead spacing and physical dimensions, requiring circuit board layout modification.

Q: Are all three parts (IRF9640L, IRF9640PBF, IRF9640LPBF) electrically interchangeable?

A: All three parts share identical electrical specifications: 200V Vdss, 11A continuous drain current, 500 mOhm Rds On, and all other electrical parameters. Mechanical interchangeability depends on packaging: IRF9640L and IRF9640LPBF are mechanically compatible (I2PAK), while IRF9640PBF requires board redesign (TO-220AB).

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

A: The IRF9640LPBF is recommended for new designs. It provides parametric equivalence to the obsolete IRF9640L, is active product status, ROHS3 compliant, and requires no circuit board modification.

Q: What are the compliance differences between the IRF9640L and its substitutes?

A: The IRF9640L is RoHS non-compliant. Both IRF9640PBF and IRF9640LPBF are ROHS3 compliant. For applications requiring RoHS compliance, either substitute part is acceptable.

Q: Can the IRF9640PBF be used in applications where thermal dissipation is critical?

A: The TO-220AB package (IRF9640PBF) and I2PAK package (IRF9640LPBF) have different thermal characteristics. The TO-220AB package may offer different thermal performance depending on mounting configuration and heatsinking approach. Thermal analysis specific to the application circuit and mounting method is necessary to determine suitability.

Q: Are there any gate charge or input capacitance differences between the substitutes?

A: No. All three parts maintain identical gate charge (44 nC @ 10V) and input capacitance (1200 pF @ 25V) specifications. Switching performance characteristics are equivalent across all three parts.

Q: What is the operating temperature range for all three parts?

A: All three parts operate across the identical temperature range of -55°C to 150°C (TJ).