IXFN40N90P Equivalent & Substitute Parts

Part Overview

The IXFN40N90P is an N-Channel MOSFET manufactured by IXYS, rated for 900V drain-to-source voltage with 33A continuous drain current at 25°C. This device is housed in a SOT-227B (miniBLOC) chassis mount package and is designed for high-voltage switching applications requiring robust thermal performance up to 695W. The part is Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility within the high-voltage MOSFET category.

Substiute Parts

IXFN40N90P

IXYSIn Stock: 936IXFN40N90P Datasheet

Current PartRFQ

APT10021JFLL

Microchip TechnologyIn Stock: 33112APT10021JFLL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IXFN40N90P are identified based on the following critical electrical and mechanical parameters:

Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Equal to or greater than 900V
• Continuous Drain Current (Id): Equal to or greater than 33A at 25°C
• On-State Resistance (Rds On): Equal to or less than 210mOhm at specified gate voltage
• Gate Threshold Voltage (Vgs(th)): Within acceptable switching range
• Power Dissipation: Equal to or greater than 695W
• Operating Temperature Range: Minimum -55°C to 150°C
• Mounting Type: Chassis Mount
• Package Compatibility: SOT-227B or equivalent miniBLOC footprint
• Compliance: RoHS3 compliant, MSL 1 (Unlimited)

The APT10021JFLL meets these criteria with enhanced voltage rating (1000V), higher current capability (37A), and equivalent thermal performance (694W), while maintaining identical on-state resistance specification and full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

IXFN40N90P (Primary Part) The IXFN40N90P remains the primary selection for applications requiring the specified 900V rating, 33A continuous current, and 695W thermal performance. This part is Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory compliance.

APT10021JFLL (Substitute Part) The APT10021JFLL is a qualified substitute for applications where higher voltage margin or increased current capacity is beneficial. This part exceeds the IXFN40N90P specifications with 1000V Vdss and 37A continuous current while maintaining identical on-state resistance (210mOhm) and equivalent power dissipation (694W). Both parts share identical operating temperature range (-55°C to 150°C), chassis mount configuration, SOT-227B package footprint, and full regulatory compliance (RoHS3, REACH Unaffected). The APT10021JFLL is Active in product status with unlimited moisture sensitivity rating.

Selection between these parts depends on circuit voltage requirements and current demands. The APT10021JFLL provides design margin for higher-voltage or higher-current applications while maintaining thermal and electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the APT10021JFLL directly replace the IXFN40N90P in existing designs? A: Yes. Both parts share identical SOT-227B (miniBLOC) package footprint, chassis mount configuration, and pin compatibility. The APT10021JFLL meets or exceeds all electrical specifications of the IXFN40N90P, including on-state resistance (210mOhm), operating temperature range (-55°C to 150°C), and power dissipation capability (694W vs. 695W).

Q: What are the key differences between these two parts? A: The APT10021JFLL provides higher voltage rating (1000V vs. 900V), higher continuous drain current (37A vs. 33A), and lower input capacitance (9750pF vs. 14000pF). Gate charge is higher in the APT10021JFLL (395nC vs. 230nC), which may affect switching speed in gate-drive-limited applications. On-state resistance remains identical at 210mOhm.

Q: Are both parts RoHS3 compliant? A: Yes. Both the IXFN40N90P and APT10021JFLL are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Q: What is the operating temperature range for both parts? A: Both parts operate across -55°C to 150°C junction temperature (TJ), providing identical thermal operating range for high-temperature and low-temperature applications.

Q: Are there any gate drive considerations when substituting? A: The APT10021JFLL has higher gate charge (395nC vs. 230nC) and lower gate threshold voltage (5V vs. 6.5V at specified current). Gate drive circuits must supply sufficient charge to fully enhance the device. Verify gate driver output impedance and switching frequency compatibility with the higher gate charge specification.

Q: Can I use the APT10021JFLL in a 900V application? A: Yes. The APT10021JFLL is rated for 1000V Vdss, which exceeds the 900V requirement. This provides additional voltage margin and design safety.

Q: What is the package compatibility between these parts? A: Both parts use SOT-227B (miniBLOC) package with identical chassis mount configuration and pin layout, ensuring direct mechanical and electrical compatibility on PCB layouts designed for either part.