IRFC430 Equivalent & Substitute Parts

Part Overview

The IRFC430 is an N-channel MOSFET manufactured by Vishay Siliconix, rated for 500V operation in a TO package configuration. This device is classified as obsolete, indicating it is no longer in active production. The obsolete status necessitates identification of equivalent substitute components that maintain functional compatibility for existing designs or replacement applications. Substitute parts must satisfy the same voltage rating and general performance envelope to ensure direct or near-direct circuit compatibility.

Substiute Parts

IRFC430

Vishay SiliconixIn Stock: 1017IRFC430 Datasheet

Current PartRFQ

STW32NM50N

STMicroelectronicsIn Stock: 2517STW32NM50N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFC430 is based on the following critical parameters derived from the provided specifications:

Primary Substitution Criteria:

• Drain to Source Voltage (Vdss): 500V minimum
• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Moisture Sensitivity Level: 1 (Unlimited)
• Export Classification: EAR99
• HTSUS Code: 8541.29.0095

The STW32NM50N from STMicroelectronics satisfies all substitution criteria. This device maintains the 500V voltage rating, N-channel configuration, and MOSFET technology. The substitute part is in active production status, ensuring long-term availability and supply chain stability compared to the obsolete IRFC430.

Parameter Comparison

Engineering Selection Recommendations

STW32NM50N as Primary Substitute:

The STW32NM50N is the qualified substitute for the obsolete IRFC430. Selection is based on the following factors:

1. Voltage Rating Equivalence: Both devices maintain a 500V Drain to Source Voltage (Vdss) rating, ensuring compatibility in high-voltage switching applications.

2. Active Product Status: The STW32NM50N is in active production, providing assured long-term availability and supply chain continuity. The IRFC430 obsolete status creates sourcing risk for new designs or field replacements.

3. Regulatory Compliance: Both parts share identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications, ensuring consistent export and tariff treatment.

4. Environmental Compliance: The STW32NM50N carries ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for electronic components in regulated markets.

5. Moisture Sensitivity: Both devices are classified as MSL 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

6. Technology Consistency: Both are N-channel MOSFETs using metal oxide technology, ensuring functional equivalence in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the STW32NM50N directly replace the IRFC430 in existing circuits?

A: Yes. Both devices share the same 500V Vdss rating, N-channel configuration, and MOSFET technology. The STW32NM50N is electrically equivalent for the voltage class. Physical package differences must be evaluated separately based on PCB layout and mechanical constraints.

Q: What is the primary reason for substituting the IRFC430?

A: The IRFC430 is classified as obsolete and no longer manufactured. The STW32NM50N, in active production status, provides a functionally equivalent alternative with assured supply availability.

Q: Are there compliance differences between the IRFC430 and STW32NM50N?

A: Both devices share the same export classification (EAR99) and tariff code (8541.29.0095). The STW32NM50N additionally carries ROHS3 compliance and REACH Unaffected certification, meeting current environmental and regulatory standards.

Q: What package types are available for these devices?

A: The IRFC430 package type is not specified in the provided data. The STW32NM50N is supplied in TO-247-3 package in Tube packaging format.

Q: Are moisture sensitivity considerations relevant for these parts?

A: Both the IRFC430 and STW32NM50N are classified as MSL 1 (Unlimited), indicating no moisture sensitivity. Standard handling and storage practices apply without special moisture control requirements.

Q: What additional substitute options exist for the STW32NM50N?

A: The STW32NM50N documentation identifies the following additional substitutes: IXFR44N50Q, IXFK44N50P, IXFH50N50P3, IXFH40N50Q, and FDH50N50-F133. These alternatives maintain the 500V voltage class and N-channel MOSFET configuration.