LS4150GS18 Equivalent & Substitute Parts

Part Overview

The LS4150GS18 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 50 V DC reverse voltage with 600 mA average rectified current and features fast recovery characteristics with a 4 ns reverse recovery time. The device is packaged in SOD-80 QuadroMELF format and is qualified to AEC-Q101 automotive standards. The part is currently active in production with 798 pieces available in cut tape packaging. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when alternative packaging formats are required.

Substiute Parts

LS4150GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 857LS4150GS18 Datasheet

Current PartRFQ

LS4150GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 105488LS4150GS08 Datasheet

Parametric EquivalentRFQ

1N4153UR-1

Microchip TechnologyIn Stock: 13531N4153UR-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LS4150GS18 are classified based on electrical parameter compatibility and packaging format. The primary substitution criterion is the ability to satisfy the circuit requirements for reverse voltage rating, average rectified current capacity, and switching speed characteristics.

Parametric Equivalent Classification: Parts that maintain identical electrical specifications across voltage rating, current capacity, forward voltage drop, and reverse recovery time are classified as parametric equivalents. These parts differ only in packaging format (cut tape versus tape and reel) and represent direct functional replacements.

Manufacturer Recommended Classification: Parts that share the same reverse voltage rating but operate at reduced current capacity are classified as manufacturer recommended substitutes. These parts are suitable for applications where the circuit current requirement does not exceed the substitute part's rated capacity. Differences in package format, reverse recovery speed classification, and compliance certifications must be evaluated for specific application requirements.

Key Parameters Determining Substitution:

• Voltage - DC Reverse (Vr) Maximum: 50 V (required match)
• Current - Average Rectified (Io): 600 mA (parametric equivalent) or 150 mA (reduced capacity substitute)
• Reverse Recovery Time (trr): 4 ns (parametric equivalent) or unspecified speed classification (manufacturer recommended)
• Package / Case: SOD-80 QuadroMELF (parametric equivalent) or DO-213AA (alternative package)
• RoHS Compliance: ROHS3 Compliant (parametric equivalent) or non-compliant (manufacturer recommended)

Parameter Comparison

Engineering Selection Recommendations

LS4150GS08 Selection Criteria: The LS4150GS08 is a parametric equivalent to the LS4150GS18 and is suitable for direct substitution in applications requiring identical electrical performance. Both parts maintain 50 V reverse voltage rating, 600 mA average rectified current capacity, 4 ns reverse recovery time, and ROHS3 compliance. The primary difference is packaging format: LS4150GS08 is supplied in tape and reel format, whereas LS4150GS18 is supplied in cut tape format. Selection of LS4150GS08 is appropriate when tape and reel packaging meets procurement and assembly requirements. Inventory availability of LS4150GS08 (105,400 pieces) exceeds that of LS4150GS18 (798 pieces), supporting long-term supply chain continuity.

1N4153UR-1 Selection Criteria: The 1N4153UR-1 is a manufacturer recommended substitute suitable for applications where circuit current requirements do not exceed 150 mA average rectified current. This part maintains the 50 V reverse voltage rating and maximum junction temperature of 175°C. The 1N4153UR-1 differs from the main part in current capacity (150 mA versus 600 mA), package format (DO-213AA versus SOD-80 QuadroMELF), and compliance status (RoHS non-compliant versus ROHS3 compliant). Selection of 1N4153UR-1 is restricted to designs where the reduced current rating is acceptable and RoHS compliance requirements do not apply. AEC-Q101 automotive qualification is not specified for this part.

Frequently Asked Questions (FAQ)

Q: Can LS4150GS08 be used as a direct replacement for LS4150GS18?

A: Yes. The LS4150GS08 is a parametric equivalent with identical electrical specifications: 50 V reverse voltage, 600 mA average rectified current, 1 V forward voltage at 200 mA, 4 ns reverse recovery time, and ROHS3 compliance. The parts differ only in packaging format (tape and reel versus cut tape). Direct substitution is valid when the receiving assembly process accommodates tape and reel packaging.

Q: What are the limitations of using 1N4153UR-1 as a substitute?

A: The 1N4153UR-1 operates at 150 mA average rectified current, which is 75% lower than the LS4150GS18 rating of 600 mA. This part is suitable only for circuits where the maximum current requirement does not exceed 150 mA. Additionally, the 1N4153UR-1 is RoHS non-compliant and does not carry AEC-Q101 automotive qualification. Package format differs (DO-213AA versus SOD-80 QuadroMELF), requiring PCB layout modification.

Q: Are there differences in reverse recovery time between the main part and substitutes?

A: The LS4150GS18 and LS4150GS08 both specify 4 ns reverse recovery time, classified as fast recovery. The 1N4153UR-1 does not specify reverse recovery time and is classified as small signal with unspecified speed characteristics. Applications requiring fast recovery switching performance should use LS4150GS08 or LS4150GS18.

Q: What is the significance of the SOD-80 QuadroMELF package format?

A: SOD-80 QuadroMELF is a surface mount package with four leads, enabling higher current capacity and improved thermal performance compared to two-lead packages. The LS4150GS18 and LS4150GS08 both use this package format. The 1N4153UR-1 uses DO-213AA, a two-lead surface mount package with reduced current handling capability. Package selection affects PCB layout, thermal management, and assembly compatibility.

Q: Does RoHS compliance status affect substitution decisions?

A: RoHS compliance is a regulatory requirement for many applications, particularly in consumer electronics and automotive markets. The LS4150GS18 and LS4150GS08 are ROHS3 compliant. The 1N4153UR-1 is RoHS non-compliant. Substitution with 1N4153UR-1 is restricted to applications where RoHS compliance is not required.

Q: What is the difference between cut tape and tape and reel packaging?

A: Cut tape packaging supplies components in short segments of carrier tape, typically used for small-quantity orders or manual assembly. Tape and reel packaging supplies components on continuous reels, optimized for high-volume automated assembly. LS4150GS18 is supplied in cut tape format with 798 pieces in stock. LS4150GS08 is supplied in tape and reel format with 105,400 pieces in stock. Selection depends on assembly volume and procurement requirements.

Q: Is AEC-Q101 qualification required for all applications?

A: AEC-Q101 qualification is required for automotive applications. The LS4150GS18 carries AEC-Q101 qualification. The LS4150GS08 and 1N4153UR-1 do not specify AEC-Q101 qualification. Automotive applications must use LS4150GS18 or verify that alternative parts meet equivalent automotive reliability standards.