SD103AW-7-F-79 Equivalent & Substitute Parts

Part Overview

The SD103AW-7-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-7-F-79

Diodes IncorporatedIn Stock: 1150SD103AW-7-F-79 Datasheet

Current PartRFQ

SD103AW-7-F

Diodes IncorporatedIn Stock: 20431SD103AW-7-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-7-F-79 is determined by equivalence in the following critical parameters: Schottky technology classification, 40 V maximum reverse voltage rating, 350 mA average rectified current capacity, 600 mV maximum forward voltage at 200 mA, 10 ns reverse recovery time, 5 µA maximum reverse leakage current at 30 V, SOD-123 surface mount package, and ROHS3 compliance. Parts meeting these specifications are classified as parametric equivalents regardless of manufacturer or product status. Capacitance variation and operating temperature range differences do not preclude substitution when all primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

SD103AW-7-F is the primary substitute for SD103AW-7-F-79. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications. SD103AW-7-F holds Active product status with significantly higher inventory availability (20400 units), ensuring procurement continuity. The operating temperature range of -65°C to 125°C is narrower than the original part but remains suitable for standard industrial and commercial applications.

SD103AW-G3-08 (Vishay General Semiconductor - Diodes Division) is a parametric equivalent with Active product status. All critical electrical parameters match the original specification. Capacitance is rated at 50 pF versus 28 pF for the original part; this difference does not affect substitution eligibility. Operating temperature range matches the original (-55°C to 150°C). Inventory availability is substantial at 17300 units.

SD103AW-HE3-08 (Vishay General Semiconductor - Diodes Division) is a parametric equivalent with Last Time Buy product status. This part includes AEC-Q101 automotive qualification and is graded for automotive applications. All electrical specifications match the original. Capacitance is 50 pF. Operating temperature range is -55°C to 150°C. Inventory is limited at 1425 units. Selection of this part is appropriate only for applications requiring automotive-grade qualification.

Frequently Asked Questions (FAQ)

Q: Can SD103AW-7-F directly replace SD103AW-7-F-79 in existing designs?

A: Yes. SD103AW-7-F is a direct substitute manufactured by the same supplier (Diodes Incorporated) with identical electrical and mechanical specifications. The part is in Active status with higher inventory availability.

Q: What is the significance of the capacitance difference between SD103AW-7-F-79 (28 pF) and the Vishay alternatives (50 pF)?

A: Capacitance variation within the specified range does not affect substitution eligibility for rectifier diode applications. Both values are within acceptable limits for the SOD-123 Schottky diode category and do not impact forward conduction, reverse blocking, or switching characteristics.

Q: Are the Vishay parts (SD103AW-G3-08 and SD103AW-HE3-08) suitable for all applications?

A: SD103AW-G3-08 is suitable for standard applications. SD103AW-HE3-08 includes AEC-Q101 automotive qualification and is designated for automotive-grade applications only. Selection depends on application requirements.

Q: What is the difference between SD103AW-7-F and SD103AW-G3-08 in terms of packaging?

A: SD103AW-7-F is supplied in Cut Tape (CT) and Digi-Reel® packaging. SD103AW-G3-08 is supplied in Tape & Reel (TR) packaging. Both are surface mount SOD-123 packages suitable for automated assembly. Packaging selection depends on procurement and manufacturing process requirements.

Q: Why is SD103AW-HE3-08 listed as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this part number. Inventory is limited at 1425 units. This part should be selected only when automotive-grade AEC-Q101 qualification is a mandatory requirement.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SD103AW-7-F, SD103AW-G3-08, and SD103AW-HE3-08) are ROHS3 compliant and REACH unaffected, matching the compliance status of the original SD103AW-7-F-79.

Q: What is the operating temperature range difference between substitutes?

A: SD103AW-7-F operates from -65°C to 125°C (narrower range). SD103AW-G3-08 and SD103AW-HE3-08 operate from -55°C to 150°C (matching the original). Selection depends on application temperature requirements.