IXFX32N50Q N-Channel 500V 32A MOSFET Equivalent & Substitute Parts

Part Overview

The IXFX32N50Q is an N-Channel 500V 32A MOSFET manufactured by IXYS in the HiPerFET™ series, housed in a PLUS247™-3 package. This device is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. The part operates across a temperature range of -55°C to 150°C and dissipates up to 416W at the case temperature. Equivalent and substitute parts must maintain compatibility with the electrical specifications and through-hole mounting configuration while accommodating modern active product availability.

Substiute Parts

IXFX32N50Q

IXYSIn Stock: 1448IXFX32N50Q Datasheet

Current PartRFQ

IXFH36N60P

IXYSIn Stock: 2081IXFH36N60P Datasheet

DirectRFQ

APT5016BFLLG

Microchip TechnologyIn Stock: 964APT5016BFLLG Datasheet

SimilarRFQ

APT5016BLLG

Microchip TechnologyIn Stock: 769APT5016BLLG Datasheet

SimilarRFQ

IRFP32N50KPBF

Vishay SiliconixIn Stock: 7324IRFP32N50KPBF Datasheet

SimilarRFQ

SIHG25N40D-GE3

Vishay SiliconixIn Stock: 1166SIHG25N40D-GE3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXFX32N50Q is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Drain to Source Voltage (Vdss): Minimum 500V
• Continuous Drain Current (Id): Minimum 32A at 25°C
• On-State Resistance (Rds On): Maximum 160mOhm at rated conditions
• Gate Threshold Voltage (Vgs(th)): Within acceptable switching range
• Mounting Type: Through Hole configuration
• Package Type: TO-247-3 or compatible variant

Substitution Categories:

Direct Electrical Equivalents maintain the same Vdss (500V) and Id (32A) specifications with comparable Rds On characteristics. These parts are pin-compatible and require no circuit modifications.

Higher Voltage Rated Substitutes exceed the 500V Vdss requirement, providing enhanced voltage margin. These parts maintain or exceed the 32A current rating and are suitable for applications where voltage headroom is beneficial.

Lower Current Rated Substitutes operate at reduced continuous drain current (30A) while maintaining the 500V Vdss specification. These parts are applicable in circuits where the full 32A capability is not required.

Lower Voltage Rated Substitutes operate below 500V Vdss (400V) and are suitable only for applications with reduced voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

IRFP32N50KPBF (Vishay Siliconix) — Recommended Direct Equivalent

The IRFP32N50KPBF is the primary substitute for the IXFX32N50Q. Both devices share identical Vdss (500V) and Id (32A) ratings with matching Rds On specifications (160mOhm). The IRFP32N50KPBF is actively manufactured, ROHS3 compliant, and available in high inventory (7245 units). The slightly higher gate charge (190nC vs. 150nC) and power dissipation (460W vs. 416W) represent acceptable trade-offs for an active, widely available component. Pin compatibility with TO-247-3 packaging ensures direct board-level substitution without circuit modification.

APT5016BFLLG and APT5016BLLG (Microchip Technology) — Reduced Current Alternative

Both Microchip APT5016 variants maintain the 500V Vdss specification with a reduced continuous drain current of 30A. These parts are suitable for applications where the full 32A capability is not required. The lower gate charge (72nC) and reduced power dissipation (329W) provide efficiency benefits in lower-current circuits. Both variants are actively manufactured, ROHS3 compliant, and REACH unaffected. Inventory availability is adequate (862 and 714 units respectively). Circuit analysis is required to confirm that 30A operation meets application requirements.

IXFH36N60P (IXYS) — Higher Voltage Rated Alternative

The IXFH36N60P provides enhanced voltage margin with a 600V Vdss rating while exceeding the current requirement at 36A. This part is suitable for applications requiring additional voltage headroom or where higher current capability is beneficial. The device is actively manufactured, ROHS3 compliant, and REACH unaffected, with strong inventory availability (1979 units). The increased gate charge (102nC) and power dissipation (650W) must be evaluated against thermal and drive circuit constraints. Pin compatibility with TO-247-3 packaging is maintained.

SIHG25N40D-GE3 (Vishay Siliconix) — Lower Voltage Alternative

The SIHG25N40D-GE3 operates at 400V Vdss with a reduced current rating of 25A. This part is applicable only in circuits where the voltage requirement does not exceed 400V and current demand does not exceed 25A. The device is actively manufactured and ROHS3 compliant. Use of this part in applications requiring 500V operation is not permitted.

Frequently Asked Questions (FAQ)

Q: Can the IRFP32N50KPBF directly replace the IXFX32N50Q without circuit modifications?

A: Yes. The IRFP32N50KPBF maintains identical Vdss (500V) and Id (32A) ratings with matching Rds On (160mOhm). Both devices use TO-247-3 packaging with compatible pinouts. No circuit modifications are required for direct substitution.

Q: What is the difference between the APT5016BFLLG and APT5016BLLG?

A: Both parts are electrically and mechanically identical. They share the same electrical specifications (500V, 30A, 160mOhm Rds On) and TO-247-3 packaging. The difference lies in packaging format (both supplied in tubes) and inventory tracking. Either part may be selected based on availability.

Q: Can I use the IXFH36N60P in place of the IXFX32N50Q?

A: The IXFH36N60P is electrically compatible for applications where the 500V minimum voltage requirement is met. The higher 600V rating provides voltage margin. However, the increased gate charge (102nC vs. 150nC) and power dissipation (650W vs. 416W) require verification that the gate drive circuit and thermal management can accommodate these parameters. Pin compatibility with TO-247-3 packaging is maintained.

Q: Are the Microchip APT5016 parts suitable substitutes if my application only requires 30A?

A: Yes. If circuit analysis confirms that 30A continuous drain current is sufficient for the application, the APT5016BFLLG or APT5016BFLLG provide active, compliant alternatives. Both maintain the 500V Vdss specification and offer lower gate charge and power dissipation characteristics. Verify that the reduced current rating does not compromise circuit performance or safety margins.

Q: Why is the SIHG25N40D-GE3 listed as a substitute if it has lower voltage and current ratings?

A: The SIHG25N40D-GE3 is listed as a substitute only for applications where both the voltage requirement does not exceed 400V and the current requirement does not exceed 25A. It is not suitable for general replacement of the IXFX32N50Q in 500V applications. Verify application voltage and current requirements before selecting this part.

Q: What is the significance of the "Obsolete" product status for the IXFX32N50Q?

A: Obsolete status indicates that IXYS no longer manufactures the IXFX32N50Q. Existing inventory may be available from distributors, but long-term supply cannot be guaranteed. Substitute parts with "Active" product status ensure continued availability for production and future design iterations.

Q: Are all substitute parts ROHS3 compliant?

A: The IRFP32N50KPBF, APT5016BFLLG, APT5016BLLG, IXFH36N60P, and SIHG25N40D-GE3 are all ROHS3 compliant. Compliance status is verified in the provided specifications and is suitable for applications requiring ROHS certification.

Q: What is the difference between TO-247-3 and TO-247AC packaging?

A: TO-247-3 and TO-247AC are compatible package variants used for three-terminal power MOSFETs. Both provide the same pinout and mechanical footprint suitable for through-hole mounting. The designations reflect different manufacturer nomenclature for the same physical package form factor.