LL4003G L0G Equivalent & Substitute Parts

Part Overview

The LL4003G L0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 1 A average rectified current in a surface mount MELF package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across a junction temperature range of -65°C to 150°C and complies with ROHS3 and REACH standards.

Substiute Parts

LL4003G L0G

Taiwan Semiconductor CorporationIn Stock: 861LL4003G L0G Datasheet

Current PartRFQ

S1D

YAGEOIn Stock: 6087S1D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LL4003G L0G is determined by electrical and mechanical compatibility across the following critical parameters:

• Reverse Voltage Rating: 200 V minimum
• Average Rectified Current: 1 A minimum
• Forward Voltage Drop: 1.1 V maximum at 1 A
• Reverse Leakage Current: 5 µA maximum at 200 V
• Recovery Speed: Standard recovery characteristics
• Package Compatibility: Surface mount configuration
• Compliance: ROHS3 and REACH standards

The substitute part S1D from YAGEO meets these electrical specifications and maintains surface mount compatibility, enabling direct functional replacement in applications requiring 200 V, 1 A rectification.

Parameter Comparison

Engineering Selection Recommendations

The S1D from YAGEO is a functionally equivalent substitute for the obsolete LL4003G L0G. Both components share identical electrical ratings for reverse voltage (200 V), average rectified current (1 A), and forward voltage drop (1.1 V @ 1 A). Both maintain ROHS3 compliance and MSL 1 classification, ensuring compatibility with standard manufacturing and storage protocols.

The primary distinction is product status: the LL4003G L0G is obsolete, while the S1D is active in production. This status difference makes the S1D the appropriate selection for new designs and ongoing procurement requirements. Both components carry identical ECCN and HTSUS classifications, indicating equivalent regulatory treatment.

Frequently Asked Questions (FAQ)

Q: Can the S1D directly replace the LL4003G L0G in existing designs?

A: Yes. Both components meet identical electrical specifications for 200 V reverse voltage, 1 A average rectified current, and 1.1 V forward voltage drop. Both are surface mount devices with matching compliance certifications.

Q: What is the significance of the LL4003G L0G being obsolete?

A: Obsolete status indicates the part is no longer manufactured by Taiwan Semiconductor Corporation. The S1D, classified as active, is currently in production and available for procurement, making it the appropriate choice for design continuity and component sourcing.

Q: Are there package differences between these parts?

A: The LL4003G L0G uses the DO-213AB MELF package. The S1D is specified as DO-214AC. Both are surface mount packages suitable for automated assembly, though physical dimensions may differ. Verify PCB footprint compatibility before implementation.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LL4003G L0G and S1D are ROHS3 compliant and REACH unaffected. Both carry MSL 1 classification, indicating unlimited shelf life under standard storage conditions.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Reverse voltage rating (200 V), average rectified current (1 A), forward voltage drop (1.1 V @ 1 A), and reverse leakage current (5 µA @ 200 V) are the primary electrical criteria. Surface mount configuration and compliance certifications are the mechanical and regulatory requirements.