SD103BWS-G3-08 Equivalent & Substitute Parts

Part Overview

The SD103BWS-G3-08 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 30 V DC reverse voltage and 350 mA average rectified current in a surface mount SOD-323 package. This part is Active in product status and RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter ranges.

Substiute Parts

SD103BWS-G3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1183SD103BWS-G3-08 Datasheet

Current PartRFQ

1PS76SB10,135

Nexperia USA Inc.In Stock: 337751PS76SB10,135 Datasheet

MFR RecommendedRFQ

B0530WS-7-F

Diodes IncorporatedIn Stock: 30302B0530WS-7-F Datasheet

MFR RecommendedRFQ

BAT5403WE6327HTSA1

Infineon TechnologiesIn Stock: 19048BAT5403WE6327HTSA1 Datasheet

MFR RecommendedRFQ

NSR0530HT1G

onsemiIn Stock: 462243NSR0530HT1G Datasheet

MFR RecommendedRFQ

PMEG3005AEA,115

Nexperia USA Inc.In Stock: 24673PMEG3005AEA,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD103BWS-G3-08 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 30 V
• Package / Case: Must be SC-76, SOD-323 (surface mount)
• Technology: Schottky diode
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Current Rating Flexibility: The SD103BWS-G3-08 operates at 350 mA average rectified current. Substitute parts with equal or higher current ratings (200 mA, 350 mA, or 500 mA) are acceptable when all other parameters remain within specification.

Forward Voltage Consideration: Forward voltage characteristics vary among substitutes. Parts with lower forward voltage (Vf) at rated current provide improved efficiency; parts with higher forward voltage remain functionally compatible within the 30 V system design.

Speed and Recovery Time: The SD103BWS-G3-08 specifies Fast Recovery ≤ 500ns for currents > 200mA and a reverse recovery time (trr) of 10 ns. Substitute parts classified as Fast Recovery or Small Signal are both acceptable, as both categories support the switching requirements of this application.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain the mandatory compatibility criteria: 30 V DC reverse voltage rating, SOD-323 surface mount package, Schottky technology, ROHS3 compliance, and MSL 1 classification.

1PS76SB10,135 (Nexperia USA Inc.): This part operates at 200 mA average rectified current, below the main part's 350 mA rating. Selection is appropriate for applications where current demand does not exceed 200 mA. This part carries AEC-Q101 automotive qualification and is available in high inventory (33,688 pcs).

B0530WS-7-F (Diodes Incorporated): This part is rated for 500 mA average rectified current, exceeding the main part's 350 mA specification. Forward voltage is 450 mV @ 500 mA, lower than the main part. Operating temperature range is -40 to 125 °C, which is narrower than the main part's -55 to 150 °C range. This part is suitable for applications requiring higher current capacity within the specified temperature window.

BAT5403WE6327HTSA1 (Infineon Technologies): This part operates at 200 mA average rectified current with a reverse recovery time of 5 ns, faster than the main part's 10 ns. Maximum junction temperature is 150 °C, matching the main part's upper limit. Selection is appropriate for applications where current demand does not exceed 200 mA and faster switching is beneficial.

NSR0530HT1G (onsemi): This part is rated for 500 mA average rectified current with forward voltage of 620 mV @ 500 mA. Operating temperature range is -55 to 150 °C, identical to the main part. Reverse leakage current is 200 µA @ 30 V. This part provides higher current capacity with matching temperature performance and is available in the highest inventory (462,200 pcs).

PMEG3005AEA,115 (Nexperia USA Inc.): This part is rated for 500 mA average rectified current with forward voltage of 430 mV @ 500 mA, the lowest among all substitutes. Maximum junction temperature is 150 °C. This part carries AEC-Q100 automotive qualification and is suitable for applications requiring higher current capacity with improved efficiency characteristics.

Frequently Asked Questions (FAQ)

Q: Can I use a 200 mA rated substitute in place of the 350 mA SD103BWS-G3-08?

A: No. The 200 mA rated parts (1PS76SB10,135 and BAT5403WE6327HTSA1) are rated below the main part's 350 mA specification. Use of an undersized current rating creates risk of thermal stress and component failure. These parts are suitable only for applications designed for 200 mA or lower current operation.

Q: Can I use a 500 mA rated substitute in place of the 350 mA SD103BWS-G3-08?

A: Yes. The 500 mA rated parts (B0530WS-7-F, NSR0530HT1G, and PMEG3005AEA,115) exceed the main part's 350 mA rating and are electrically compatible. These parts provide additional current capacity margin and are suitable for direct substitution in applications designed for the SD103BWS-G3-08.

Q: What is the difference between Fast Recovery and Small Signal speed classifications?

A: Fast Recovery diodes are specified for currents greater than 200 mA and have defined reverse recovery times (typically ≤ 500 ns). Small Signal diodes are specified for currents of 200 mA or less and do not have defined reverse recovery time specifications. Both classifications are acceptable substitutes for the SD103BWS-G3-08 within their respective current operating ranges.

Q: Does forward voltage (Vf) affect substitutability?

A: Forward voltage affects power dissipation and efficiency but does not prevent substitution. Lower forward voltage (such as 430 mV in PMEG3005AEA,115) results in reduced power loss. Higher forward voltage (such as 800 mV in 1PS76SB10,135) results in increased power loss. Selection depends on thermal design requirements and efficiency targets of the application.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the SC-76, SOD-323 surface mount package, identical to the main part. Packaging format is mechanically and electrically compatible across all listed substitutes. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® are different supply formats of the same physical package and do not affect component functionality.

Q: What is the significance of operating temperature range differences?

A: The SD103BWS-G3-08 operates from -55 to 150 °C. Substitute parts with narrower ranges (such as B0530WS-7-F at -40 to 125 °C) are suitable only for applications within their specified temperature window. Parts with matching or wider temperature ranges provide greater design flexibility. Temperature range does not affect substitutability if the application operates within the substitute part's specified limits.

Q: Do automotive qualifications (AEC-Q101, AEC-Q100) affect substitutability for non-automotive applications?

A: Automotive qualifications indicate additional testing and reliability screening but do not prevent use in non-automotive applications. Parts with automotive qualifications (1PS76SB10,135 with AEC-Q101 and PMEG3005AEA,115 with AEC-Q100) are fully compatible substitutes for general-purpose applications. Automotive qualification is a superset of standard reliability requirements.

Q: Can I mix substitute parts from different manufacturers in the same circuit?

A: Yes. All substitute parts meet the same electrical and mechanical specifications for the 30 V, SOD-323 package category. Mixing parts from different manufacturers (Vishay, Nexperia, Diodes Incorporated, Infineon, onsemi) is electrically valid. Circuit design should account for parameter variations such as forward voltage and reverse leakage current across different manufacturers.