IXTT20N50D N-Channel 500V 20A MOSFET Equivalent & Substitute Parts

Part Overview

The IXTT20N50D is an N-Channel depletion-mode MOSFET manufactured by IXYS, rated for 500V drain-to-source voltage and 20A continuous drain current at 25°C. This device is housed in a TO-268AA surface mount package and is designed for high-voltage switching applications requiring robust thermal performance up to 400W at the case temperature. The part is currently in active production status with extensive inventory availability.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter ranges while accommodating application-specific requirements such as current rating adjustments or thermal management considerations.

Substiute Parts

IXTT20N50D

IXYSIn Stock: 68867IXTT20N50D Datasheet

Current PartRFQ

IXTT16N50D2

IXYSIn Stock: 68637IXTT16N50D2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IXTT20N50D is determined by the following critical parameters:

Mandatory Matching Criteria:

• Drain to Source Voltage (Vdss): 500V
• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• FET Feature: Depletion Mode
• Package Type: TO-268AA
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C

Allowable Variation Criteria:

• Continuous Drain Current (Id): May be lower than the main part rating, provided the application current requirement does not exceed the substitute part's rating
• Power Dissipation (Max): May be higher or lower depending on thermal design requirements
• On-Resistance (Rds On): Variations acceptable within application-specific switching loss budgets
• Gate Charge (Qg): Variations acceptable within driver capability constraints

The IXTT16N50D2 qualifies as a substitute part when the application current requirement does not exceed 16A continuous drain current, as all other critical electrical and mechanical parameters remain equivalent to the main part.

Parameter Comparison

Engineering Selection Recommendations

IXTT20N50D Primary Selection: The IXTT20N50D is the primary choice for applications requiring 20A continuous drain current at 500V. This part maintains active production status with full RoHS3 compliance and REACH unaffected designation, ensuring long-term supply chain stability and regulatory compliance.

IXTT16N50D2 Substitute Selection: The IXTT16N50D2 is a valid substitute when the application circuit operates at or below 16A continuous drain current. This substitute part offers superior power dissipation capability (695W versus 400W), making it advantageous for thermally constrained designs. Both parts share identical voltage ratings, depletion-mode operation, and TO-268AA packaging, ensuring mechanical and thermal interface compatibility. The IXTT16N50D2 maintains active production status with equivalent compliance certifications.

Selection Criteria:

• Use IXTT20N50D when continuous drain current requirement exceeds 16A
• Use IXTT16N50D2 when continuous drain current requirement is 16A or lower and enhanced thermal performance is beneficial
• Both parts are suitable for -55°C to 150°C operating environments
• Both parts are suitable for surface mount assembly processes

Frequently Asked Questions (FAQ)

Q: Can the IXTT16N50D2 be used in place of the IXTT20N50D in all applications?

A: The IXTT16N50D2 is a valid substitute only when the application circuit operates at continuous drain currents of 16A or lower. If the circuit requires current exceeding 16A, the IXTT20N50D must be used. Both parts are electrically and mechanically compatible in terms of voltage rating, package type, and operating temperature range.

Q: What is the primary difference between these two parts?

A: The primary difference is the continuous drain current rating: IXTT20N50D is rated for 20A, while IXTT16N50D2 is rated for 16A. The IXTT16N50D2 offers higher maximum power dissipation (695W versus 400W), which may provide thermal advantages in certain applications. All other critical parameters, including voltage rating, package type, and depletion-mode operation, are equivalent.

Q: Are both parts available in the same package?

A: Yes. Both the IXTT20N50D and IXTT16N50D2 are housed in the TO-268AA package (TO-268-3, D³Pak with 2 leads plus tab), ensuring identical mechanical and thermal interface characteristics for PCB assembly and heat sink mounting.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain moisture sensitivity level 1 (unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: What is the operating temperature range for both parts?

A: Both the IXTT20N50D and IXTT16N50D2 operate across the identical temperature range of -55°C to 150°C junction temperature, ensuring compatibility in applications spanning industrial, automotive, and high-temperature environments.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes, from a mechanical and thermal perspective. Both parts use identical TO-268AA packaging and surface mount assembly processes. However, electrical substitution is valid only when the application current requirement does not exceed the substitute part's 16A rating.