IRFP344PBF N-Channel 450V 9.5A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFP344PBF is an N-Channel metal oxide semiconductor field-effect transistor (MOSFET) rated for 450V drain-to-source voltage with 9.5A continuous drain current at 25°C. This device is packaged in a TO-247AC through-hole configuration and is rated for 150W maximum power dissipation. The IRFP344PBF is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical performance characteristics and mechanical compatibility to ensure direct replacement capability without circuit redesign.

Substiute Parts

IRFP344PBF

Vishay SiliconixIn Stock: 1964IRFP344PBF Datasheet

Current PartRFQ

IRFP344

Vishay SiliconixIn Stock: 1527IRFP344 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFP344PBF is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameter Equivalence:

• Drain-to-source voltage rating of 450V
• Continuous drain current of 9.5A at 25°C
• On-state resistance of 630mOhm at specified gate-source voltage and drain current
• Gate threshold voltage of 4V at 250µA
• Gate charge of 80nC at 10V gate-source voltage
• Maximum gate-source voltage of ±20V
• Input capacitance of 1400pF at 25V drain-source voltage
• Power dissipation rating of 150W

Mechanical Parameter Equivalence:

• TO-247-3 package configuration
• Through-hole mounting type
• Identical pin configuration and footprint

Compliance and Status Criteria:

• Active product status for ongoing availability
• Moisture sensitivity level of 1 (Unlimited)
• ECCN classification of EAR99
• HTSUS code 8541.29.0095

Parameter Comparison

Engineering Selection Recommendations

The IRFP344 serves as a direct parametric equivalent to the obsolete IRFP344PBF. Both devices are manufactured by Vishay Siliconix and share identical electrical specifications across all critical parameters including voltage rating, current capacity, on-state resistance, gate charge, and thermal characteristics. The mechanical compatibility is complete, with both parts utilizing the TO-247-3 through-hole package configuration.

The primary distinction between the two parts is product status: the IRFP344PBF is classified as obsolete, while the IRFP344 maintains active status. This status difference ensures continued availability and supply chain reliability for the IRFP344 in new production and design implementations.

Both parts maintain identical compliance certifications including ECCN EAR99 classification, HTSUS code 8541.29.0095, and moisture sensitivity level 1 (Unlimited). The IRFP344 is suitable for direct substitution in all applications previously designed for the IRFP344PBF without modification to circuit design, PCB layout, or thermal management strategies.

Frequently Asked Questions (FAQ)

Q: Can the IRFP344 be used as a direct replacement for the IRFP344PBF in existing designs?

A: Yes. The IRFP344 is a parametric equivalent with identical electrical specifications and mechanical compatibility. Direct substitution is supported without circuit modification.

Q: Are the pin configurations identical between IRFP344PBF and IRFP344?

A: Yes. Both devices use the TO-247-3 package configuration with identical pin assignments and footprint geometry.

Q: What is the significance of the product status difference between obsolete and active?

A: The IRFP344PBF is classified as obsolete, indicating discontinued production and limited availability. The IRFP344 maintains active status, ensuring reliable supply chain access and ongoing manufacturing support.

Q: Do both parts have the same thermal characteristics?

A: Yes. Both the IRFP344PBF and IRFP344 are rated for 150W maximum power dissipation and operate across the identical temperature range of -55°C to 150°C (TJ).

Q: Are there any compliance or certification differences between the two parts?

A: No. Both parts share identical ECCN classification (EAR99), HTSUS code (8541.29.0095), and moisture sensitivity level (1 - Unlimited).

Q: What are the critical electrical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in drain-to-source voltage (450V), continuous drain current (9.5A at 25°C), on-state resistance (630mOhm at 5.7A, 10V), gate threshold voltage (4V at 250µA), gate charge (80nC at 10V), and maximum gate-source voltage (±20V).

Q: Is the TO-247-3 package suitable for both surface-mount and through-hole assembly?

A: The TO-247-3 is a through-hole package. Both the IRFP344PBF and IRFP344 are designed for through-hole mounting on PCBs with appropriate lead spacing and hole diameter specifications.