DGS3-018AS Equivalent & Substitute Parts

Part Overview

The DGS3-018AS is a Schottky diode manufactured by IXYS, rated for 180 V DC reverse voltage and 7 A average rectified current in a surface mount TO-252AA 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 suitable for high-frequency rectification applications.

Substiute Parts

DGS3-018AS

IXYSIn Stock: 782DGS3-018AS Datasheet

Current PartRFQ

CSHD8-200 TR13 PBFREE

Central Semiconductor CorpIn Stock: 9045CSHD8-200 TR13 PBFREE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DGS3-018AS is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must support the maximum DC reverse voltage requirement of 180 V or higher. The CSHD8-200 TR13 PBFREE meets this criterion with a 200 V rating, providing adequate voltage margin.

Current Rating Compatibility: The substitute part must support the average rectified current of 7 A or higher. The CSHD8-200 TR13 PBFREE is rated for 8 A, exceeding the original specification.

Package Compatibility: Both parts utilize the TO-252-3 DPAK package with identical mechanical dimensions (SC-63), ensuring direct physical compatibility in PCB layouts.

Technology Consistency: Both parts employ Schottky diode technology with fast recovery characteristics (≤ 500ns, > 200mA), maintaining functional equivalence in rectification applications.

Operating Temperature Range: The substitute part must support the required junction temperature range. The CSHD8-200 TR13 PBFREE operates from -65°C to 175°C, encompassing the original -55°C to 175°C range.

Parameter Comparison

Engineering Selection Recommendations

The CSHD8-200 TR13 PBFREE is a direct substitute for the obsolete DGS3-018AS based on the following factors:

Product Status: The CSHD8-200 TR13 PBFREE maintains active product status with current manufacturing availability, addressing the obsolescence of the original DGS3-018AS.

Compliance and Certifications: The CSHD8-200 TR13 PBFREE is RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements. Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Electrical Performance: The substitute part exceeds all critical electrical specifications of the original part. The 200 V reverse voltage rating provides margin above the 180 V requirement, the 8 A current rating exceeds the 7 A specification, and the lower forward voltage (900 mV @ 8 A) and reverse leakage (50 µA @ 200 V) represent performance improvements.

Mechanical and Thermal Compatibility: Identical package designation (TO-252-3 DPAK SC-63) ensures direct PCB compatibility without layout modifications. The extended operating temperature range (-65°C to 175°C) encompasses the original specification.

Moisture Sensitivity: Both parts share MSL 1 (Unlimited) classification, indicating identical moisture handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the CSHD8-200 TR13 PBFREE be used as a direct replacement for the DGS3-018AS in existing designs?

A: Yes. Both parts share identical package geometry (TO-252-3 DPAK SC-63), pinout configuration, and mounting type. The substitute part meets or exceeds all electrical specifications of the original part.

Q: What are the key differences between these two parts?

A: The CSHD8-200 TR13 PBFREE provides higher voltage rating (200 V vs. 180 V), higher current rating (8 A vs. 7 A), lower forward voltage drop, and lower reverse leakage current. The substitute part is actively manufactured, whereas the original is obsolete.

Q: Are there any thermal considerations when substituting these parts?

A: Both parts operate across the same maximum junction temperature (175°C). The substitute part supports a lower minimum temperature (-65°C vs. -55°C), providing extended low-temperature operation capability.

Q: Does the lower forward voltage of the substitute part affect circuit operation?

A: The lower forward voltage (900 mV @ 8 A) of the CSHD8-200 TR13 PBFREE compared to the original (1.1 V @ 2 A) results in reduced power dissipation and improved efficiency. This represents a performance enhancement for rectification applications.

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

A: The CSHD8-200 TR13 PBFREE exhibits significantly lower reverse leakage (50 µA @ 200 V vs. 700 µA @ 180 V), indicating improved diode quality and reduced standby power consumption in applications where reverse bias is present.

Q: Are there any compliance or certification differences between these parts?

A: The CSHD8-200 TR13 PBFREE is RoHS3 compliant, whereas the original DGS3-018AS does not specify RoHS compliance. Both parts are REACH unaffected and share identical export classification codes.

Q: Can PCB layouts designed for the DGS3-018AS be used without modification for the CSHD8-200 TR13 PBFREE?

A: Yes. Identical package designation and pinout configuration allow direct PCB layout reuse without modification.