DST580S-A Schottky Diode Equivalent & Substitute Parts

Part Overview

The DST580S-A is an 80V, 5A Schottky rectifier diode manufactured by Littelfuse Inc., designed for surface mount applications in the TO-277B package. This component is classified as Active product status and meets automotive-grade requirements with AEC-Q101 qualification. Schottky diodes in this voltage and current class are used in power conversion, rectification, and reverse polarity protection circuits where fast recovery and low forward voltage drop are critical performance factors. Identifying equivalent and substitute parts is necessary when managing inventory constraints, ensuring supply chain continuity, or optimizing component procurement across manufacturing operations.

Substiute Parts

DST580S-A

Littelfuse Inc.In Stock: 814DST580S-A Datasheet

Current PartRFQ

DST580S

Littelfuse Inc.In Stock: 16836DST580S Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DST580S-A is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 80 V
• Current - Average Rectified (Io): 5 A
• Voltage - Forward (Vf) (Max) @ If: 720 mV @ 5 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 400 µA @ 80 V
• Capacitance @ Vr, F: 245 pF @ 5V, 1MHz
• Package / Case: TO-277, 3-PowerDFN
• Operating Temperature - Junction: -55°C to 150°C
• Technology: Schottky
• Mounting Type: Surface Mount

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. No derating, performance compromise, or circuit re-qualification is required for substitution.

Parameter Comparison

Engineering Selection Recommendations

DST580S as Direct Substitute for DST580S-A:

The DST580S is a parametric equivalent and direct substitute for the DST580S-A. Both parts are manufactured by Littelfuse Inc., share identical electrical specifications, and are packaged in the same TO-277B surface mount configuration. Both parts maintain Active product status and comply with ROHS3 and REACH regulatory requirements. No circuit modification, re-qualification, or performance derating is required when substituting DST580S for DST580S-A in existing designs.

The primary distinction between these parts is packaging format: DST580S-A is supplied in Tape & Reel (TR) format with 762 pieces in current inventory, while DST580S is also supplied in Tape & Reel format with significantly higher inventory availability (16,782 pieces). Selection between these two part numbers should be based on procurement volume requirements and supply chain availability rather than technical performance considerations.

Both parts are qualified to automotive-grade standards (AEC-Q101) and are suitable for applications requiring fast recovery Schottky rectification at 80V, 5A ratings.

Frequently Asked Questions (FAQ)

Q: Can DST580S replace DST580S-A in production assemblies?

A: Yes. DST580S is a direct parametric equivalent to DST580S-A. All electrical characteristics, thermal ratings, package dimensions, and compliance certifications are identical. No design changes or re-testing are required.

Q: What is the difference between DST580S-A and DST580S?

A: The primary difference is packaging format and inventory availability. DST580S-A is supplied in Tape & Reel format with 762 pieces available. DST580S is also supplied in Tape & Reel format with 16,782 pieces available. Electrical and mechanical specifications are identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both DST580S-A and DST580S carry AEC-Q101 automotive qualification and are classified as Active products. Both meet automotive-grade reliability and environmental requirements.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is based on exact matching of: reverse voltage (80V), average rectified current (5A), forward voltage drop (720 mV @ 5A), recovery speed (≤500ns), reverse leakage current (400 µA @ 80V), junction capacitance (245 pF @ 5V, 1MHz), package type (TO-277B), and operating temperature range (-55°C to 150°C).

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical TO-277B surface mount packaging and pinout. PCB footprints, solder reflow profiles, and assembly processes are identical. No layout or assembly procedure modifications are necessary.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard storage and handling procedures apply without special desiccant or humidity control requirements.

Q: Are these parts RoHS and REACH compliant?

A: Yes. Both DST580S-A and DST580S are ROHS3 Compliant and REACH Unaffected, meeting current environmental and hazardous substance regulations.