DGS3-030AS Equivalent & Substitute Parts

Part Overview

The DGS3-030AS is a Schottky diode manufactured by IXYS, rated for 300V DC reverse voltage and 5A average rectified current in a surface mount TO-252AA package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance across voltage, current, and thermal specifications while accommodating the same or compatible package footprints.

Substiute Parts

DGS3-030AS

IXYSIn Stock: 930DGS3-030AS Datasheet

Current PartRFQ

SURD8530T4G-VF01

onsemiIn Stock: 1185SURD8530T4G-VF01 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DGS3-030AS is determined by equivalence across the following critical parameters:

Voltage Rating: Substitute parts must maintain a DC reverse voltage (Vr) rating of 300V or greater to ensure safe operation in the original circuit application.

Current Rating: The average rectified current (Io) must be rated at 5A or higher to support the design load without thermal stress or performance degradation.

Package Compatibility: The substitute must use the TO-252-3 DPAK package (2 Leads + Tab, SC-63) to ensure mechanical and electrical compatibility with existing PCB layouts and thermal management designs.

Speed Classification: Fast recovery characteristics (≤ 500ns, > 200mA) are required to maintain switching performance in the intended application.

Operating Temperature Range: The junction temperature range must encompass or exceed -55°C to 175°C to support the thermal environment of the original design.

Moisture Sensitivity: MSL rating of 1 (Unlimited) ensures compatibility with standard handling and storage procedures.

The SURD8530T4G-VF01 meets all substitution criteria through equivalent electrical ratings, identical package specification, and active product status with automotive-grade qualification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SURD8530T4G-VF01 (onsemi)

The SURD8530T4G-VF01 is the qualified substitute for the obsolete DGS3-030AS. This component maintains electrical equivalence across all critical parameters: 300V reverse voltage rating, 5A average rectified current, fast recovery speed classification, and identical TO-252-3 DPAK package footprint.

The substitute demonstrates superior performance characteristics in forward voltage drop (1.05V @ 5A versus 2V @ 2A) and reverse leakage current (5µA @ 300V versus 700µA @ 300V), resulting in reduced power dissipation and improved circuit efficiency. The extended lower operating temperature limit (-65°C versus -55°C) provides additional thermal margin.

The SURD8530T4G-VF01 carries active product status with AEC-Q101 automotive qualification and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The component is supplied in Tape & Reel packaging with 1110 units in current inventory.

Frequently Asked Questions (FAQ)

Q: Can the SURD8530T4G-VF01 be used as a direct replacement for the DGS3-030AS without PCB modifications?

A: Yes. Both components use the identical TO-252-3 DPAK package (SC-63) with the same pinout and lead configuration. No PCB layout changes are required for mechanical or electrical compatibility.

Q: What is the difference between Schottky and Standard diode technology in this substitution?

A: The DGS3-030AS uses Schottky technology, while the SURD8530T4G-VF01 uses Standard technology. Both meet the fast recovery speed requirement (≤ 500ns, > 200mA). The substitute's lower forward voltage and reverse leakage characteristics indicate superior performance for the specified application parameters.

Q: Are there thermal management differences between these components?

A: Both components are rated to 175°C maximum junction temperature. The SURD8530T4G-VF01 supports operation down to -65°C, providing a 10°C lower temperature margin compared to the DGS3-030AS. Thermal dissipation is improved in the substitute due to lower forward voltage drop.

Q: Does the substitute meet compliance requirements for the original application?

A: The SURD8530T4G-VF01 is ROHS3 compliant and REACH unaffected, matching the regulatory status of the original component. AEC-Q101 automotive qualification provides additional assurance for mission-critical applications.

Q: What is the impact of the lower reverse leakage current in the substitute?

A: The SURD8530T4G-VF01 exhibits 5µA reverse leakage at 300V compared to 700µA in the DGS3-030AS. This 140-fold reduction decreases standby power consumption and improves circuit efficiency, particularly in applications with extended idle periods or high-impedance sensing circuits.

Q: Is the Tape & Reel packaging compatible with standard assembly processes?

A: Yes. Tape & Reel packaging is standard for automated surface mount assembly. The SURD8530T4G-VF01 in TR format is compatible with conventional pick-and-place equipment and reflow soldering processes.