IXFT32N50Q N-Channel 500V 32A MOSFET Equivalent & Substitute Parts

Part Overview

The IXFT32N50Q is an N-Channel MOSFET from IXYS, part of the HiPerFET™ series, rated for 500V drain-to-source voltage and 32A continuous drain current. This device is housed in a TO-268AA surface mount package and is designed for high-voltage switching applications requiring robust thermal performance at 360W maximum power dissipation.

The IXFT32N50Q is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

IXFT32N50Q

IXYSIn Stock: 2445IXFT32N50Q Datasheet

Current PartRFQ

IXFT36N50P

IXYSIn Stock: 1075IXFT36N50P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXFT32N50Q is based on electrical and mechanical parameter compatibility within the N-Channel MOSFET category. The following criteria determine valid substitutes:

Critical Parameters for Substitution:

• Drain to Source Voltage (Vdss): Must equal or exceed 500V
• Package Type: Must be TO-268AA surface mount
• FET Type: Must be N-Channel
• Technology: Must be MOSFET (Metal Oxide)
• Operating Temperature Range: Must support -55°C to 150°C minimum

Performance Parameters:

• Continuous Drain Current (Id): Substitute must meet or exceed 32A
• Drive Voltage: Must operate at 10V gate drive
• On-State Resistance (Rds On): Lower or equivalent values are acceptable
• Gate Charge (Qg): Lower values indicate improved switching performance
• Power Dissipation: Higher ratings provide thermal margin

The IXFT36N50P qualifies as a direct substitute based on matching voltage rating, package configuration, and exceeding current and power dissipation specifications.

Parameter Comparison

Engineering Selection Recommendations

The IXFT36N50P is a direct substitute for the IXFT32N50Q based on the following engineering criteria:

Electrical Compatibility: Both devices share identical drain-to-source voltage ratings (500V) and gate drive voltage requirements (10V). The IXFT36N50P provides higher continuous drain current (36A versus 32A) and increased power dissipation capability (540W versus 360W), ensuring thermal and electrical margin in existing circuit designs.

Mechanical Compatibility: Both parts utilize the TO-268AA surface mount package with identical pinout and thermal interface characteristics. No PCB layout modifications are required for direct substitution.

Product Status and Compliance: The IXFT32N50Q is classified as obsolete, making the IXFT36N50P the recommended active alternative. The IXFT36N50P maintains compliance with RoHS3 and REACH standards, supporting long-term supply chain sustainability and regulatory requirements.

Gate Charge Advantage: The IXFT36N50P exhibits significantly lower gate charge (93 nC versus 190 nC), resulting in reduced switching losses and improved efficiency in high-frequency switching applications.

Maximum Gate Voltage: The IXFT36N50P supports ±30V gate voltage compared to ±20V for the IXFT32N50Q, providing additional design flexibility for gate drive circuits.

Frequently Asked Questions (FAQ)

Q: Can the IXFT36N50P directly replace the IXFT32N50Q without circuit modifications?

A: Yes. Both devices share identical voltage ratings (500V Vdss), gate drive voltage (10V), package type (TO-268AA), and operating temperature range (-55°C to 150°C). The IXFT36N50P provides higher current and power ratings, ensuring compatibility with existing designs.

Q: What is the significance of the higher continuous drain current in the IXFT36N50P?

A: The IXFT36N50P is rated for 36A continuous drain current compared to 32A in the IXFT32N50Q. This higher rating provides thermal and electrical margin, reducing junction temperature rise and extending device lifetime in current-limited applications.

Q: How does the lower gate charge of the IXFT36N50P affect circuit performance?

A: Gate charge (Qg) directly impacts switching speed and gate drive power requirements. The IXFT36N50P's 93 nC gate charge (versus 190 nC) reduces switching losses, improves efficiency, and decreases gate driver stress in high-frequency switching applications.

Q: Are there any differences in package handling or moisture sensitivity?

A: Both devices are classified as MSL 1 (Unlimited moisture sensitivity level), indicating no special moisture control requirements during storage or handling. Both use identical TO-268AA surface mount packages with identical lead configurations.

Q: What is the impact of the ±30V maximum gate voltage rating on the IXFT36N50P?

A: The IXFT36N50P supports ±30V gate voltage compared to ±20V for the IXFT32N50Q. This extended rating provides additional design flexibility for gate drive circuits and improves robustness against transient overvoltage conditions.

Q: Why is the IXFT32N50Q classified as obsolete?

A: The IXFT32N50Q is no longer in active production. The IXFT36N50P represents the current active alternative within the IXYS HiPerFET™ product line, offering improved performance characteristics and long-term supply availability.

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

A: The IXFT36N50P is RoHS3 compliant and REACH unaffected, supporting modern regulatory requirements. Both devices share the same ECCN (EAR99) and HTSUS classification, ensuring consistent export and import compliance.