IXTA3N50P N-Channel 500V 3.6A MOSFET Equivalent & Substitute Parts

Part Overview

The IXTA3N50P is an N-Channel MOSFET manufactured by IXYS in the PolarHV™ series, rated for 500V drain-to-source voltage with 3.6A continuous drain current at 25°C. The device is packaged in TO-263AA surface mount configuration with a maximum power dissipation of 70W. The IXTA3N50P is classified as obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and product status constraints.

Substiute Parts

IXTA3N50P

IXYSIn Stock: 1198IXTA3N50P Datasheet

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IXTA4N65X2

IXYSIn Stock: 139794IXTA4N65X2 Datasheet

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IRF820ASPBF

Vishay SiliconixIn Stock: 15335IRF820ASPBF Datasheet

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IRF820SPBF

Vishay SiliconixIn Stock: 2179IRF820SPBF Datasheet

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IRF820STRLPBF

Vishay SiliconixIn Stock: 2590IRF820STRLPBF Datasheet

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IRF820STRRPBF

Vishay SiliconixIn Stock: 2577IRF820STRRPBF Datasheet

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STD6N52K3

STMicroelectronicsIn Stock: 50135STD6N52K3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXTA3N50P is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Substitute parts must equal or exceed 500V
• Continuous Drain Current (Id): Substitute parts must equal or exceed 3.6A at 25°C
• On-State Resistance (Rds On): Lower or equivalent resistance at specified gate voltage
• Gate-Source Voltage (Vgs Max): Must accommodate ±30V or greater
• Power Dissipation: Must equal or exceed 70W (Tc)
• Operating Temperature: Must span -55°C to 150°C (TJ)
• Mounting Type: Surface Mount configuration required
• Package Compatibility: TO-263 family packages (D2PAK, TO-263AB)

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (Same Vdss, Equal or Higher Id) Parts meeting or exceeding all primary electrical specifications with identical or superior performance characteristics.

Category 2: Higher Voltage Rated Alternatives (Vdss > 500V) Parts with elevated voltage ratings that maintain or improve current handling and thermal performance, suitable for applications with voltage margin requirements.

Parameter Comparison

Engineering Selection Recommendations

IXTA4N65X2 (IXYS) The IXTA4N65X2 is an active product offering superior electrical performance with 650V Vdss rating, 4A continuous drain current, and 80W power dissipation. This part exceeds all primary electrical specifications of the IXTA3N50P and maintains identical operating temperature range and gate voltage rating. The IXTA4N65X2 is ROHS3 compliant and available in high inventory (139,726 pcs). Selection of this part is appropriate for applications requiring voltage margin or higher current capacity.

STD6N52K3 (STMicroelectronics) The STD6N52K3 is an active product with 525V Vdss, 5A continuous drain current, and 70W power dissipation, matching the thermal specification of the IXTA3N50P. This part provides superior current handling (5A vs. 3.6A) and lower on-state resistance (1.2 Ohm vs. 2 Ohm). The STD6N52K3 is ROHS3 compliant with high inventory availability (50,100 pcs). Package compatibility is maintained within the TO-263 family (DPAK variant). Selection of this part is appropriate for direct replacement with performance enhancement.

IRF820STRLPBF and IRF820STRRPBF (Vishay Siliconix) Both IRF820STRLPBF and IRF820STRRPBF are active products with identical electrical specifications: 500V Vdss, 2.5A continuous drain current, and 50W power dissipation. These parts are packaged in Tape & Reel format and are ROHS3 compliant. The reduced current rating (2.5A vs. 3.6A) and power dissipation (50W vs. 70W) limit application scope. Selection of these parts is appropriate only for applications with reduced current requirements below 2.5A.

IRF820SPBF (Vishay Siliconix) The IRF820SPBF is an active product with 500V Vdss, 2.5A continuous drain current, and 50W power dissipation, packaged in Tube format. The reduced current and power specifications limit compatibility. The Vgs Max rating of ±20V is lower than the IXTA3N50P specification of ±30V. Selection of this part is appropriate only for applications with reduced current requirements and gate voltage constraints.

IRF820ASPBF (Vishay Siliconix) The IRF820ASPBF is an active product with 500V Vdss, 2.5A continuous drain current, and 50W power dissipation. This part maintains the full ±30V Vgs Max rating. The reduced current and power specifications limit compatibility. Selection of this part is appropriate only for applications with reduced current requirements below 2.5A.

Frequently Asked Questions (FAQ)

Q: Can the IXTA4N65X2 directly replace the IXTA3N50P in all applications?

A: The IXTA4N65X2 meets or exceeds all electrical specifications of the IXTA3N50P. The higher voltage rating (650V vs. 500V) and increased current capacity (4A vs. 3.6A) provide performance margin. Package compatibility is maintained within the TO-263 family. Direct substitution is permissible from an electrical standpoint. Application-specific circuit validation is required to confirm suitability.

Q: Why do the IRF820 series parts have lower current ratings than the IXTA3N50P?

A: The IRF820 series (IRF820ASPBF, IRF820SPBF, IRF820STRLPBF, IRF820STRRPBF) are rated for 2.5A continuous drain current, which is lower than the IXTA3N50P specification of 3.6A. These parts are not suitable for applications requiring the full 3.6A current capacity. Selection of these parts is limited to applications with current requirements not exceeding 2.5A.

Q: What is the difference between IRF820STRLPBF and IRF820STRRPBF?

A: Both IRF820STRLPBF and IRF820STRRPBF share identical electrical specifications and are packaged in Tape & Reel format. The designations STRL and STRR indicate different tape reel configurations for automated assembly. Electrical performance and compatibility are equivalent. Selection between these parts is determined by assembly equipment requirements.

Q: Is the STD6N52K3 package (DPAK) compatible with TO-263AA footprints?

A: The STD6N52K3 is packaged in DPAK format, which is a variant within the TO-263 family. DPAK and TO-263AA share the same pin configuration (2 Leads + Tab) and are mechanically compatible on TO-263 footprints. PCB layout validation is required to confirm dimensional compatibility with existing designs.

Q: What is the significance of the ROHS3 compliance status?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive 3. All active substitute parts listed (IXTA4N65X2, IRF820ASPBF, IRF820SPBF, IRF820STRLPBF, IRF820STRRPBF, STD6N52K3) are ROHS3 compliant. The IXTA3N50P (obsolete) does not specify RoHS status. Selection of ROHS3 compliant parts ensures regulatory compliance for new designs and procurement.

Q: Can I use the IRF820SPBF if my application operates at gate voltages above ±20V?

A: No. The IRF820SPBF is rated for Vgs Max of ±20V, while the IXTA3N50P is rated for ±30V. Applications requiring gate voltages between ±20V and ±30V are not compatible with the IRF820SPBF. The IRF820ASPBF, IXTA4N65X2, and STD6N52K3 all support ±30V gate voltage operation.

Q: What inventory considerations should guide part selection?

A: The IXTA4N65X2 has the highest inventory availability (139,726 pcs), followed by STD6N52K3 (50,100 pcs). The IRF820 series parts have lower inventory levels (2,100 to 15,265 pcs). For long-term procurement planning, the IXTA4N65X2 and STD6N52K3 offer superior supply chain stability.

Q: Is the IXTA3N50P still available for procurement?

A: The IXTA3N50P is classified as obsolete. Current inventory is reported at 1,103 pcs. All listed substitute parts are active products with significantly higher inventory availability. Transition to an active substitute part is recommended for new designs and ongoing procurement.