IXTH40N50L2 Equivalent & Substitute Parts

Part Overview

The IXTH40N50L2 is an N-Channel MOSFET manufactured by IXYS, rated for 500V drain-to-source voltage with 40A continuous drain current at 25°C. This device is housed in a TO-247 through-hole package and is part of the Linear L2™ series. The component is actively produced and RoHS3 compliant, making it suitable for high-voltage switching applications requiring robust thermal performance up to 540W.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs, particularly when the primary part faces supply constraints or when design requirements permit operation at reduced current ratings.

Substiute Parts

IXTH40N50L2

IXYSIn Stock: 5818IXTH40N50L2 Datasheet

Current PartRFQ

APT5017BVRG

Microchip TechnologyIn Stock: 879APT5017BVRG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IXTH40N50L2 is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain the 500V Vdss rating to ensure safe operation in the same circuit topology without risk of voltage breakdown.

Package Compatibility: Both the main part and substitute must use the TO-247-3 through-hole package to ensure mechanical fit and thermal interface compatibility with existing PCB layouts and heatsink assemblies.

Current Rating Consideration: While the IXTH40N50L2 is rated for 40A continuous drain current, substitute parts with lower current ratings (such as 30A) remain functionally compatible in applications where the actual circuit current demand does not exceed the substitute's rating. The substitute must not exceed the main part's voltage or thermal specifications.

RDS(on) Specification: The on-resistance at specified gate and drain conditions must be within acceptable limits for the application. The IXTH40N50L2 specifies 170mOhm maximum; substitutes with equivalent or lower on-resistance maintain thermal and efficiency characteristics.

Compliance and Status: Both parts must maintain active product status and RoHS3 compliance to ensure continued availability and regulatory adherence.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The IXTH40N50L2 remains the preferred choice for applications requiring the full 40A continuous drain current rating. With 5725 units in stock, supply availability is established. The part maintains active product status and full RoHS3 compliance.

Substitute Part Selection: The APT5017BVRG from Microchip Technology is a valid substitute for applications where the circuit design operates at or below 30A continuous drain current. Both parts share identical 500V voltage ratings, TO-247-3 package specifications, and RoHS3 compliance status. The APT5017BVRG exhibits lower input capacitance (5280 pF versus 10400 pF), which may provide switching speed advantages in certain topologies. Gate charge is marginally lower (300 nC versus 320 nC), reducing gate drive requirements.

Compliance Verification: Both parts maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and REACH Unaffected status, ensuring regulatory alignment for industrial and commercial applications.

Current Derating Consideration: Selection of the APT5017BVRG requires verification that actual circuit current demand does not exceed 30A. Applications designed for the full 40A capability of the IXTH40N50L2 cannot use the substitute without circuit redesign or thermal management modifications.

Frequently Asked Questions (FAQ)

Q: Can the APT5017BVRG directly replace the IXTH40N50L2 in all applications?

A: Direct replacement is possible only in applications where the continuous drain current does not exceed 30A. The APT5017BVRG is rated for 30A maximum continuous current, compared to the IXTH40N50L2's 40A rating. Both parts share the same 500V voltage rating and TO-247-3 package, ensuring mechanical and thermal interface compatibility. Applications requiring the full 40A capability must use the IXTH40N50L2.

Q: Are there package compatibility concerns between these parts?

A: No. Both the IXTH40N50L2 and APT5017BVRG use the TO-247-3 through-hole package. They are mechanically and thermally interchangeable from a mounting perspective, requiring no PCB layout modifications or heatsink redesign.

Q: How do the on-resistance specifications compare?

A: Both parts specify 170mOhm maximum on-resistance. However, the measurement conditions differ: the IXTH40N50L2 is specified at 20A and 10V gate voltage, while the APT5017BVRG is specified at 500mA and 10V gate voltage. At equivalent operating conditions, actual on-resistance performance should be verified through detailed datasheets.

Q: What is the significance of the lower input capacitance in the APT5017BVRG?

A: The APT5017BVRG exhibits 5280 pF input capacitance compared to 10400 pF for the IXTH40N50L2. Lower input capacitance reduces gate charge requirements and may improve switching speed in high-frequency applications. This characteristic is determined by the device's internal structure and does not affect voltage or current ratings.

Q: Are both parts suitable for high-temperature operation?

A: Yes. Both parts operate across the -55°C to 150°C temperature range, supporting demanding thermal environments. The IXTH40N50L2 is rated for 540W power dissipation at the case temperature, providing substantial thermal headroom for continuous operation.

Q: Do regulatory and compliance statuses differ between the parts?

A: No. Both the IXTH40N50L2 and APT5017BVRG maintain identical compliance profiles: RoHS3 compliant, MSL Level 1 (unlimited), REACH Unaffected, and EAR99 ECCN classification. Both are actively produced and suitable for regulated industrial applications.

Q: What should be considered when selecting between these parts for new designs?

A: Selection depends on current requirements and supply availability. For applications requiring 40A continuous current, the IXTH40N50L2 is mandatory. For designs operating at 30A or below, either part is acceptable. The APT5017BVRG's lower input capacitance may provide switching performance benefits in high-frequency topologies. Current inventory levels (5725 units for IXTH40N50L2 versus 837 units for APT5017BVRG) should inform long-term supply planning.