DGS4-025A Equivalent & Substitute Parts

Part Overview

The DGS4-025A is a Schottky diode manufactured by IXYS, rated for 250 V DC reverse voltage and 5.4 A average rectified current in a Through Hole TO-220AC package. This component is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part features fast recovery characteristics with a maximum forward voltage of 1.6 V at 2 A and operates across a junction temperature range of -55°C to 175°C.

Substiute Parts

DGS4-025A

IXYSIn Stock: 1001DGS4-025A Datasheet

Current PartRFQ

LQA06T300

Power IntegrationsIn Stock: 4359LQA06T300 Datasheet

SimilarRFQ

MBR40250G

onsemiIn Stock: 16791MBR40250G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DGS4-025A are selected based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Parameters:

• Voltage - DC Reverse (Vr) rating must equal or exceed 250 V
• Current - Average Rectified (Io) rating must equal or exceed 5.4 A
• Mounting Type must be Through Hole
• Package / Case must be TO-220-2 or TO-220AC (mechanically compatible)
• Speed classification must support Fast Recovery characteristics (≤ 500ns, > 200mA)

Substitute Parts Identified:

1. MBR40250G (onsemi): Schottky diode with 250 V / 40 A rating, TO-220-2 package, active product status
2. LQA06T300 (Power Integrations): General purpose diode with 300 V / 6 A rating, TO-220AC package, active product status

Both substitute parts meet or exceed the electrical requirements of the DGS4-025A while maintaining mechanical compatibility through identical or equivalent packaging.

Parameter Comparison

Engineering Selection Recommendations

MBR40250G (onsemi) is the primary substitute for applications requiring direct technology equivalence. This Schottky diode maintains identical voltage rating (250 V) and exceeds current capacity (40 A versus 5.4 A). The part is actively manufactured and carries ROHS3 compliance certification. The lower reverse leakage current (30 µA versus 700 µA) and lower forward voltage drop at rated current provide improved thermal performance. Operating temperature range extends to -65°C minimum, exceeding the original part's -55°C specification. This substitute is suitable for direct replacement in existing designs.

LQA06T300 (Power Integrations) serves as an alternative for applications where higher voltage margin is beneficial. This general purpose diode provides 300 V reverse voltage rating and 6 A current capacity, both exceeding DGS4-025A specifications. The part is actively manufactured with RoHS compliance. Reverse leakage current is significantly lower (25 µA). The primary design consideration is the different diode technology (Standard versus Schottky), which affects forward voltage characteristics and switching behavior. This substitute is applicable where circuit design accommodates the technology transition.

Both substitute parts are available in active production status, ensuring long-term procurement availability compared to the obsolete DGS4-025A.

Frequently Asked Questions (FAQ)

Q: Can MBR40250G directly replace DGS4-025A in all applications?

A: MBR40250G maintains identical voltage rating and Schottky technology, with superior current capacity and lower reverse leakage. Direct replacement is supported for applications operating at or below 5.4 A. Thermal design may benefit from the improved characteristics. Verify circuit board layout accommodates the TO-220-2 package footprint.

Q: What is the primary difference between MBR40250G and LQA06T300 substitutes?

A: MBR40250G is a Schottky diode matching the original DGS4-025A technology, while LQA06T300 is a standard general purpose diode. Schottky diodes exhibit lower forward voltage drop and faster switching characteristics. Standard diodes provide higher voltage rating (300 V) but different switching behavior. Technology selection depends on circuit requirements for switching speed and forward voltage performance.

Q: Are the TO-220-2 and TO-220AC packages mechanically interchangeable?

A: TO-220-2 and TO-220AC are mechanically compatible packages for Through Hole mounting applications. Both accommodate identical lead spacing and mounting hole patterns on standard PCB layouts. Thermal performance characteristics are equivalent for this component category.

Q: Why is reverse leakage current significantly lower in substitute parts?

A: MBR40250G and LQA06T300 are actively manufactured products with modern semiconductor processing, resulting in lower reverse leakage (25-30 µA) compared to the obsolete DGS4-025A (700 µA). This represents improved device quality and reduced thermal generation during reverse bias operation.

Q: What operating temperature considerations apply when substituting?

A: DGS4-025A operates from -55°C to 175°C. MBR40250G extends the minimum temperature to -65°C and limits maximum to 150°C. LQA06T300 specifies 150°C maximum only. Verify circuit operating temperature range compatibility with selected substitute, particularly for applications requiring the full -55°C to 175°C span.

Q: Are compliance certifications equivalent across all three parts?

A: DGS4-025A carries REACH Unaffected status. MBR40250G is ROHS3 Compliant with REACH Unaffected status. LQA06T300 is RoHS Compliant with REACH Unaffected status. All three parts carry EAR99 ECCN classification. Verify specific compliance requirements for your application and regulatory jurisdiction.