DGS9-025AS Equivalent & Substitute Parts

Part Overview

The DGS9-025AS is a Schottky diode manufactured by IXYS, rated for 250 V DC reverse voltage and 12 A average rectified current in a surface mount TO-252AA package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain functional compatibility across critical electrical parameters and mechanical packaging specifications.

Substiute Parts

DGS9-025AS

IXYSIn Stock: 1182DGS9-025AS Datasheet

Current PartRFQ

SDURD1530

SMC Diode SolutionsIn Stock: 905SDURD1530 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DGS9-025AS are identified based on the following critical parameters that determine functional compatibility:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) rating must equal or exceed 250 V
• Current - Average Rectified (Io) rating must equal or exceed 12 A
• Speed classification must support Fast Recovery characteristics (≤ 500ns, > 200mA)
• Operating temperature range must encompass -55°C to 175°C

Mechanical Compatibility Criteria:

• Mounting type must be Surface Mount
• Package / Case must be TO-252-3, DPAK (2 Leads + Tab), SC-63
• Moisture Sensitivity Level must be 1 (Unlimited)

The SDURD1530 qualifies as a substitute part because it meets or exceeds all critical electrical parameters while maintaining identical mechanical packaging and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The SDURD1530 is a qualified substitute for the obsolete DGS9-025AS based on the following engineering factors:

Electrical Performance: The SDURD1530 exceeds the minimum electrical requirements of the DGS9-025AS across all critical parameters. The 300 V reverse voltage rating provides 20% margin above the 250 V requirement, and the 15 A current rating provides 25% margin above the 12 A requirement. Both parts maintain Fast Recovery speed classification.

Mechanical Compatibility: Both parts utilize identical TO-252-3 DPAK packaging with 2 leads plus tab configuration, ensuring direct mechanical substitution without PCB layout modifications.

Environmental Specifications: Operating temperature ranges are identical (-55°C to 175°C), and both parts carry MSL 1 (Unlimited) moisture sensitivity classification, indicating equivalent handling and storage requirements.

Product Status and Availability: The SDURD1530 is classified as Active with 852 pieces in stock, providing reliable procurement compared to the obsolete DGS9-025AS status.

Regulatory Compliance: The SDURD1530 is ROHS3 compliant, supporting modern regulatory requirements. The difference in REACH status (REACH Affected versus REACH Unaffected) reflects the substitute's active production status and should be evaluated within the context of end-application regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDURD1530 directly replace the DGS9-025AS without circuit modifications?

A: Yes. The SDURD1530 meets or exceeds all critical electrical parameters (voltage, current, speed) and maintains identical mechanical packaging (TO-252-3 DPAK). No PCB layout changes are required. However, the lower forward voltage (1.26 V @ 15 A versus 1.5 V @ 5 A) and lower reverse leakage current may result in improved thermal performance and reduced power dissipation in the application circuit.

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

A: The DGS9-025AS uses Schottky technology, while the SDURD1530 uses Standard technology. Both are classified as Fast Recovery diodes with identical speed specifications (≤ 500ns, > 200mA). The technology difference does not prevent substitution when electrical and mechanical parameters are met.

Q: Are there any thermal or power dissipation considerations when substituting?

A: The SDURD1530 exhibits lower forward voltage drop (1.26 V @ 15 A) compared to the DGS9-025AS (1.5 V @ 5 A), which typically results in reduced power dissipation and improved thermal performance. Both parts operate across the same temperature range (-55°C to 175°C). Thermal design should be validated based on specific application current levels.

Q: What does the MSL 1 (Unlimited) rating mean for both parts?

A: MSL 1 (Unlimited) indicates that both the DGS9-025AS and SDURD1530 have unlimited shelf life and do not require special moisture control during storage or handling. This classification simplifies procurement and inventory management.

Q: How do the reverse leakage current specifications compare?

A: The DGS9-025AS specifies 1.3 mA @ 250 V, while the SDURD1530 specifies 10 µA @ 300 V. The SDURD1530 exhibits significantly lower reverse leakage current, which is advantageous for applications requiring minimal standby current or high impedance characteristics.

Q: Is the SDURD1530 available in the same packaging format as the DGS9-025AS?

A: Yes. Both parts use TO-252-3 DPAK (2 Leads + Tab) surface mount packaging, designated as SC-63. The SDURD1530 is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly.

Q: What is the significance of the different REACH status between these parts?

A: The DGS9-025AS is REACH Unaffected, while the SDURD1530 is REACH Affected. This reflects the obsolete versus active production status. For applications subject to REACH regulations, the SDURD1530's REACH Affected status indicates compliance with current regulatory frameworks. End-use application requirements should determine the relevance of this distinction.