SD103AW-13-F-79 Equivalent & Substitute Parts

Part Overview

The SD103AW-13-F-79 is a Schottky rectifier diode rated for 40 V DC reverse voltage and 350 mA average rectified current in a surface mount SOD-123 package. This part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts satisfy the same functional requirements within the allowed parameter ranges for this diode category.

Substiute Parts

SD103AW-13-F-79

Diodes IncorporatedIn Stock: 1012SD103AW-13-F-79 Datasheet

Current PartRFQ

SD103AW-13-F

Diodes IncorporatedIn Stock: 4135SD103AW-13-F Datasheet

SimilarRFQ

SD103AW-G3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 17381SD103AW-G3-08 Datasheet

Parametric EquivalentRFQ

SD103AW-HE3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1448SD103AW-HE3-08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD103AW-13-F-79 is determined by equivalence in the following critical parameters:

• Voltage Rating: 40 V DC reverse voltage (Vr)
• Current Rating: 350 mA average rectified current (Io)
• Forward Voltage: 600 mV maximum at 200 mA
• Reverse Recovery Time: 10 ns
• Reverse Leakage Current: 5 µA at 30 V
• Package: SOD-123 surface mount
• Technology: Schottky rectifier

Substitute parts must maintain these electrical specifications and physical package compatibility. Variations in capacitance, operating temperature range, product status, and packaging format (bulk versus tape & reel) do not preclude substitution when all primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

SD103AW-13-F (Diodes Incorporated): This part is the direct equivalent from the original manufacturer with active product status. All electrical parameters match the SD103AW-13-F-79 specification. The primary difference is packaging format (tape & reel versus bulk) and a narrower operating temperature range (-65°C to 125°C versus -55°C to 150°C). Selection of this part is appropriate for applications where the narrower temperature range is acceptable and tape & reel packaging is compatible with assembly processes.

SD103AW-G3-08 (Vishay General Semiconductor - Diodes Division): This part is a parametric equivalent with all critical electrical specifications matching the main part. Operating temperature range (-55°C to 150°C) and junction temperature capability align with the original specification. Capacitance is higher (50 pF versus 28 pF), which may affect high-frequency circuit behavior. This part is suitable for applications where the capacitance difference does not impact circuit performance. Active product status ensures long-term availability.

SD103AW-HE3-08 (Vishay General Semiconductor - Diodes Division): This part is a parametric equivalent with automotive-grade qualification (AEC-Q101) and identical electrical specifications to the main part. Operating temperature range and junction temperature capability match the original specification. Capacitance is higher (50 pF versus 28 pF). Last Time Buy status indicates limited future availability. Selection of this part is appropriate for automotive applications requiring AEC-Q101 qualification, with procurement planning required due to product status.

Frequently Asked Questions (FAQ)

Q: Can SD103AW-13-F be used as a direct replacement for SD103AW-13-F-79?

A: Yes. The SD103AW-13-F maintains all critical electrical parameters: 40 V reverse voltage, 350 mA average rectified current, 600 mV forward voltage at 200 mA, 10 ns reverse recovery time, and 5 µA reverse leakage current. The primary difference is packaging format (tape & reel versus bulk) and operating temperature range (-65°C to 125°C versus -55°C to 150°C). Compatibility depends on whether the narrower temperature range and tape & reel format are acceptable for the application.

Q: What is the significance of the capacitance difference between SD103AW-13-F-79 (28 pF) and SD103AW-G3-08 or SD103AW-HE3-08 (50 pF)?

A: Capacitance affects high-frequency circuit behavior and switching characteristics. The higher capacitance (50 pF) in the Vishay parts may introduce additional parasitic effects in circuits operating at high frequencies or with fast switching transitions. Evaluation of circuit performance is necessary if the application involves high-frequency rectification or sensitive timing requirements.

Q: Is SD103AW-HE3-08 suitable for non-automotive applications?

A: Yes. SD103AW-HE3-08 meets all electrical and mechanical specifications for the SD103AW-13-F-79 application. The automotive-grade qualification (AEC-Q101) and higher reliability standards do not restrict use in non-automotive circuits. However, Last Time Buy status indicates limited future availability, requiring procurement planning.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (SD103AW-13-F, SD103AW-G3-08, and SD103AW-HE3-08) are ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the main part.

Q: What is the difference between bulk and tape & Reel (TR) packaging?

A: Bulk packaging supplies components in loose form, suitable for manual assembly or small-volume applications. Tape & Reel (TR) packaging supplies components on continuous tape for automated pick-and-place assembly. Selection depends on assembly process requirements and production volume.

Q: Can I use SD103AW-G3-08 in applications requiring the full -55°C to 150°C temperature range?

A: Yes. SD103AW-G3-08 supports the full -55°C to 150°C operating temperature range, matching the original SD103AW-13-F-79 specification. This part is suitable for applications with extended temperature requirements.