IRFP354PBF N-Channel MOSFET 450V 14A Equivalent & Substitute Parts

Part Overview

The IRFP354PBF is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 450V drain-to-source voltage and 14A continuous drain current in a TO-247AC through-hole package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. The part delivers 190W maximum power dissipation and operates across the temperature range of -55°C to 150°C (TJ).

Substiute Parts

IRFP354PBF

Vishay SiliconixIn Stock: 772IRFP354PBF Datasheet

Current PartRFQ

IRFP17N50LPBF

Vishay SiliconixIn Stock: 1287IRFP17N50LPBF Datasheet

MFR RecommendedRFQ

IRFP354

Vishay SiliconixIn Stock: 1072IRFP354 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFP354PBF is determined by electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

• FET Type: N-Channel topology
• Package / Case: TO-247-3 through-hole configuration
• Drain to Source Voltage (Vdss): Equal to or greater than 450V
• Current - Continuous Drain (Id): Equal to or greater than 14A
• Operating Temperature Range: Minimum -55°C to 150°C (TJ)
• Mounting Type: Through Hole

Secondary Compatibility Factors:

• Rds On (Max): Lower or equal values indicate improved performance
• Power Dissipation (Max): Equal to or greater than 190W
• Gate Charge (Qg): Lower values reduce drive circuit complexity

Substitute parts meeting or exceeding all primary criteria are classified as direct replacements. Parts with enhanced electrical ratings (higher voltage, current, or power dissipation) are suitable for applications where the IRFP354PBF operates within design margins.

Parameter Comparison

Engineering Selection Recommendations

IRFP17N50LPBF (MFR Recommended Substitute): The IRFP17N50LPBF is the manufacturer-recommended substitute for the obsolete IRFP354PBF. This part exceeds the primary substitution criteria with a 500V Vdss rating (50V higher), 16A continuous drain current (2A higher), and 220W power dissipation (30W higher). The device maintains TO-247-3 through-hole packaging and identical operating temperature range. The IRFP17N50LPBF features reduced gate charge (130 nC versus 160 nC), lower on-resistance (320 mOhm versus 350 mOhm), and extended gate voltage rating (±30V versus ±20V). Product status is active with ROHS3 compliance and 1275 units in stock. This part is suitable for direct replacement in applications where the IRFP354PBF operates within design margins.

IRFP354 (Parametric Equivalent): The IRFP354 provides parametric equivalence to the IRFP354PBF with identical electrical specifications: 450V Vdss, 14A continuous drain current, 350 mOhm on-resistance, and 190W power dissipation. Both devices share the TO-247-3 through-hole package and -55°C to 150°C operating temperature range. The IRFP354 is currently in active production status with 1006 units in stock. However, this part carries RoHS non-compliant status, whereas the IRFP354PBF is ROHS3 compliant. Selection of the IRFP354 requires evaluation of regulatory and procurement requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the IRFP17N50LPBF directly replace the IRFP354PBF in all applications?

A: The IRFP17N50LPBF meets all primary substitution criteria and exceeds the electrical ratings of the IRFP354PBF. Direct replacement is permissible in applications where the IRFP354PBF operates within its design margins. The higher voltage and current ratings of the IRFP17N50LPBF provide additional design headroom. Thermal management and gate drive circuit compatibility must be verified for the specific application.

Q: What is the difference between the IRFP354PBF and IRFP354?

A: The IRFP354PBF and IRFP354 are electrically identical with matching specifications for voltage, current, on-resistance, and power dissipation. The primary distinction is regulatory compliance: IRFP354PBF is ROHS3 compliant, while IRFP354 is RoHS non-compliant. Both devices are manufactured by Vishay Siliconix in TO-247-3 through-hole packaging.

Q: Are all substitute parts available in the same packaging?

A: Yes. The IRFP17N50LPBF and IRFP354 are both supplied in TO-247-3 through-hole packages, matching the IRFP354PBF. This ensures mechanical and thermal interface compatibility with existing PCB designs and heat sink assemblies.

Q: How do gate charge differences affect circuit design?

A: The IRFP17N50LPBF features lower gate charge (130 nC) compared to the IRFP354PBF (160 nC). Lower gate charge reduces the energy required to switch the device and decreases switching losses in the gate drive circuit. This improvement does not require circuit redesign but may enhance overall system efficiency.

Q: What compliance certifications apply to these parts?

A: The IRFP354PBF and IRFP17N50LPBF are both ROHS3 compliant and REACH unaffected. Both parts carry ECCN classification EAR99 and HTSUS code 8541.29.0095. The IRFP354 is RoHS non-compliant and requires evaluation against specific regulatory requirements.

Q: Can the IRFP354 be used in applications requiring RoHS compliance?

A: No. The IRFP354 is RoHS non-compliant and is not suitable for applications with RoHS compliance requirements. The IRFP354PBF and IRFP17N50LPBF are both ROHS3 compliant and are appropriate for regulated applications.