SD103CW-7-F-79 Equivalent & Substitute Parts

Part Overview

The SD103CW-7-F-79 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 20 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 tolerances for this diode category.

Substiute Parts

SD103CW-7-F-79

Diodes IncorporatedIn Stock: 894SD103CW-7-F-79 Datasheet

Current PartRFQ

SD103CW-7-F

Diodes IncorporatedIn Stock: 17448SD103CW-7-F Datasheet

SimilarRFQ

SD103CW-G3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1134SD103CW-G3-08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD103CW-7-F-79 is determined by equivalence in the following critical parameters:

• Reverse Voltage Rating: 20 V maximum
• Average Rectified Current: 350 mA
• Forward Voltage Drop: 600 mV maximum at 200 mA
• Reverse Recovery Time: 10 ns
• Reverse Leakage Current: 5 µA at 10 V
• Package Type: SOD-123 surface mount
• Technology: Schottky rectifier

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

Parameter Comparison

Engineering Selection Recommendations

SD103CW-7-F (Diodes Incorporated)

This part is the direct equivalent to the obsolete SD103CW-7-F-79. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications. The SD103CW-7-F carries active product status and is available in higher inventory quantities (17,400 pcs). This part is the primary selection for direct replacement in new procurement and redesign activities. Both parts maintain ROHS3 compliance and REACH unaffected status. The operating temperature range of the SD103CW-7-F (-65°C ~ 125°C) is narrower than the main part (-55°C ~ 150°C); applications requiring the full -55°C to 150°C range must account for this specification difference.

SD103CW-G3-08 (Vishay General Semiconductor - Diodes Division)

This part is a parametric equivalent manufactured by Vishay. All critical electrical parameters match the main part: 20 V reverse voltage, 350 mA average rectified current, 600 mV forward voltage drop, and 10 ns reverse recovery time. The SD103CW-G3-08 maintains the same operating temperature range (-55°C ~ 150°C) as the main part. The capacitance specification differs (50 pF versus 28 pF at 0V, 1MHz), which does not affect substitution for standard rectification applications. This part is available in tape & reel packaging and carries active product status. Selection of this part is appropriate when Vishay components are preferred or when supply chain diversification is required.

Frequently Asked Questions (FAQ)

Q: Can SD103CW-7-F be used as a direct replacement for SD103CW-7-F-79?

A: Yes. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications for reverse voltage (20 V), average rectified current (350 mA), forward voltage drop (600 mV @ 200 mA), and reverse recovery time (10 ns). The SD103CW-7-F is active product status, making it the preferred replacement for the obsolete SD103CW-7-F-79. The operating temperature range differs slightly; verify application requirements if operation below -55°C or above 125°C is necessary.

Q: Is SD103CW-G3-08 compatible with designs using SD103CW-7-F-79?

A: Yes. The SD103CW-G3-08 is a parametric equivalent that satisfies all critical electrical requirements. Reverse voltage, average rectified current, forward voltage drop, and reverse recovery time are identical. The capacitance specification is higher (50 pF versus 28 pF), which does not affect rectification performance in standard applications. Both parts use SOD-123 surface mount packaging and are ROHS3 compliant.

Q: What is the difference between the packaging formats listed for these parts?

A: SD103CW-7-F is available in Cut Tape (CT) and Digi-Reel® packaging formats, suitable for component pick-and-place assembly and manual handling. SD103CW-G3-08 is supplied in Tape & Reel (TR) format, optimized for automated high-volume assembly processes. Both packaging formats contain the same component in SOD-123 case style and do not affect electrical performance.

Q: Why does SD103CW-G3-08 have a higher capacitance specification?

A: The capacitance difference (50 pF versus 28 pF at 0V, 1MHz) reflects manufacturing variations between Diodes Incorporated and Vishay processes. This parameter does not affect substitution for rectification applications where capacitance is not a critical design constraint. Applications sensitive to junction capacitance must evaluate this specification against circuit requirements.

Q: Are all three parts ROHS3 compliant?

A: Yes. SD103CW-7-F-79, SD103CW-7-F, and SD103CW-G3-08 are all ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

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

A: All three parts carry MSL 1 (Unlimited) classification, indicating unlimited shelf life under normal storage conditions without moisture bake-out requirements prior to assembly.