DSS20-01AC Equivalent & Substitute Parts

Part Overview

The DSS20-01AC is a Schottky diode manufactured by IXYS, rated for 100V DC reverse voltage and 20A average rectified current in an ISOPLUS220™ through-hole 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, >200mA) and low forward voltage drop make this diode suitable for high-frequency rectification applications.

Substiute Parts

DSS20-01AC

IXYSIn Stock: 1096DSS20-01AC Datasheet

Current PartRFQ

STPS8H100FP

STMicroelectronicsIn Stock: 4455STPS8H100FP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DSS20-01AC is determined by the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute part must maintain a DC reverse voltage rating of 100V to ensure safe operation within the original circuit design envelope.

Current Capacity: The substitute part current rating must be evaluated against the original 20A specification. Parts with lower current ratings require circuit-level assessment to confirm suitability for the intended application.

Technology Type: Both the main part and substitute must utilize Schottky diode technology to maintain equivalent switching characteristics and forward voltage performance.

Recovery Speed: Fast recovery characteristics (≤500ns, >200mA) must be preserved to maintain high-frequency rectification performance.

Mounting Configuration: Through-hole mounting is required; package form factor differences (ISOPLUS220™ versus TO-220FPAC) represent mechanical substitution considerations.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status must be maintained for supply chain and regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The STPS8H100FP from STMicroelectronics is an active product with equivalent voltage rating and recovery speed characteristics. This substitute maintains ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

The primary design consideration is current capacity: the STPS8H100FP is rated for 8A average rectified current compared to the DSS20-01AC's 20A rating. This represents a 60% reduction in current handling capability. Selection of this substitute requires confirmation that the application circuit operates within the 8A current envelope.

The forward voltage characteristic of the STPS8H100FP (710 mV @ 8A) is lower than the main part (800 mV @ 10A), resulting in reduced power dissipation. The reverse leakage current is significantly lower (4.5 µA versus 300 µA), indicating improved leakage performance.

Package form factor differs between the two parts: ISOPLUS220™ versus TO-220FPAC. PCB layout modifications may be required to accommodate the different package geometry and pin configuration.

Frequently Asked Questions (FAQ)

Q: Can the STPS8H100FP directly replace the DSS20-01AC in all applications?

A: Direct replacement is limited by current rating. The STPS8H100FP is rated for 8A average rectified current versus the DSS20-01AC's 20A. Substitution is valid only for applications where circuit current requirements do not exceed 8A. Voltage rating (100V) and recovery speed characteristics are equivalent.

Q: What are the package differences between these parts?

A: The DSS20-01AC uses ISOPLUS220™ packaging while the STPS8H100FP uses TO-220-2 Full Pack with isolated tab (TO-220FPAC). Both are through-hole mounted, but pin spacing and mechanical dimensions differ. PCB layout modifications are required for substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both the DSS20-01AC and STPS8H100FP are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Q: How do the forward voltage characteristics compare?

A: The STPS8H100FP exhibits lower forward voltage (710 mV @ 8A) compared to the DSS20-01AC (800 mV @ 10A). This results in reduced power dissipation and improved thermal performance in the substitute part.

Q: What is the significance of the reverse leakage current difference?

A: The STPS8H100FP demonstrates significantly lower reverse leakage current (4.5 µA @ 100V) compared to the DSS20-01AC (300 µA @ 100V). Lower leakage current reduces standby power consumption and improves circuit efficiency.

Q: Why is the DSS20-01AC classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by IXYS. The STPS8H100FP is an active product from STMicroelectronics, ensuring ongoing availability and supply chain continuity.

Q: What is the operating temperature range difference?

A: The DSS20-01AC specifies -55°C to 175°C junction temperature range, while the STPS8H100FP specifies 175°C maximum. The substitute part does not specify a minimum operating temperature in the provided data. Verify minimum temperature requirements for your application.