DGS20-025AS Equivalent & Substitute Parts

Part Overview

The DGS20-025AS is a Schottky diode manufactured by IXYS, rated for 250V DC reverse voltage and 18A average rectified current in a surface mount TO-263AA package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The fast recovery characteristic (≤500ns at >200mA) and wide operating temperature range (-55°C to 175°C) define its primary application scope.

Substiute Parts

DGS20-025AS

IXYSIn Stock: 785DGS20-025AS Datasheet

Current PartRFQ

12TQ200S

SMC Diode SolutionsIn Stock: 122612TQ200S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DGS20-025AS is determined by the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute part must support the maximum DC reverse voltage requirement of the application. The DGS20-025AS operates at 250V; substitute parts with lower voltage ratings (such as 200V) are suitable only for applications where the actual operating voltage does not exceed the substitute's rating.

Current Rating Compatibility: The substitute part must support the average rectified current requirement. The DGS20-025AS is rated for 18A; substitute parts with lower current ratings (such as 15A) are suitable only for applications where the actual operating current does not exceed the substitute's rating.

Package Compatibility: Both the main part and substitute must use compatible surface mount packages. The DGS20-025AS uses TO-263-3 (D2PAK with 2 Leads + Tab); substitute parts must use the same or mechanically equivalent package.

Technology Compatibility: Both parts must use Schottky diode technology to maintain consistent forward voltage characteristics and fast recovery performance.

Speed Characteristics: Both parts must meet the fast recovery specification (≤500ns at >200mA) to ensure compatibility in high-frequency switching applications.

Operating Temperature Range: Both parts must support the required junction temperature range (-55°C to 175°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Product Status: The DGS20-025AS is obsolete, making the 12TQ200S a viable active alternative for new designs and ongoing procurement. The 12TQ200S is in active production with confirmed inventory availability (1128 pieces).

Voltage and Current Derating: The 12TQ200S substitute operates at reduced voltage (200V vs. 250V) and current (15A vs. 18A) ratings. Selection of this substitute is appropriate only for applications where the actual operating voltage remains below 200V and the actual operating current remains below 15A. Applications requiring the full 250V or 18A capability of the original part cannot use this substitute without circuit redesign.

Regulatory Compliance: The 12TQ200S is ROHS3 compliant and REACH affected, whereas the DGS20-025AS is REACH unaffected. Both parts carry EAR99 ECCN classification and identical HTSUS codes. The substitute's active regulatory status aligns with current manufacturing and procurement standards.

Package and Thermal Compatibility: Both parts use identical TO-263-3 D2PAK surface mount packages and support the same operating temperature range (-55°C to 175°C), ensuring mechanical and thermal interchangeability in PCB layouts and thermal management designs.

Performance Characteristics: Both parts maintain fast recovery specifications (≤500ns at >200mA) and identical MSL ratings (1 - Unlimited), supporting equivalent reliability and handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the 12TQ200S directly replace the DGS20-025AS in all applications?

A: No. The 12TQ200S has lower voltage (200V vs. 250V) and current (15A vs. 18A) ratings. Direct substitution is valid only for applications where the actual operating voltage does not exceed 200V and the actual operating current does not exceed 15A. Applications requiring the full specifications of the DGS20-025AS require alternative solutions or circuit redesign.

Q: Are the packages mechanically compatible?

A: Yes. Both the DGS20-025AS and 12TQ200S use the TO-263-3 D2PAK (2 Leads + Tab) surface mount package. PCB footprints and mounting procedures are identical.

Q: What is the difference in forward voltage characteristics?

A: The DGS20-025AS specifies 1.5V maximum forward voltage at 7.5A, while the 12TQ200S specifies 920mV maximum at 15A. These are measured at different current levels, making direct comparison imprecise. Forward voltage performance depends on the specific operating current in the application circuit.

Q: Does the substitute meet the same temperature operating range?

A: Yes. Both parts operate across the junction temperature range of -55°C to 175°C, ensuring equivalent thermal performance and reliability in the same environmental conditions.

Q: What is the significance of the different REACH statuses?

A: The DGS20-025AS is REACH unaffected, while the 12TQ200S is REACH affected. This indicates the substitute is subject to REACH regulatory requirements for chemical substance compliance. Both parts carry identical EAR99 ECCN and HTSUS classifications, indicating equivalent export control and tariff treatment.

Q: Are the reverse leakage characteristics equivalent?

A: The DGS20-025AS specifies 2mA reverse leakage at 250V, while the 12TQ200S specifies 1mA at 200V. These measurements occur at different voltage levels, making direct comparison imprecise. Reverse leakage performance is voltage-dependent and must be evaluated at the actual operating voltage of the application.

Q: Is the 12TQ200S available in the same packaging format?

A: The 12TQ200S is supplied in Tape & Reel (TR) format, while the DGS20-025AS packaging format is not specified in the provided data. Both use identical D2PAK surface mount packages suitable for automated assembly processes.

Q: What is the inventory status of these parts?

A: The DGS20-025AS has 736 pieces in stock (obsolete status). The 12TQ200S has 1128 pieces in stock and is in active production, providing greater long-term availability assurance.