LL4005G L0G Equivalent & Substitute Parts

Part Overview

The LL4005G L0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600V DC reverse voltage and 1A 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 demonstrates standard recovery characteristics typical of general-purpose rectification applications.

Substiute Parts

LL4005G L0G

Taiwan Semiconductor CorporationIn Stock: 761LL4005G L0G Datasheet

Current PartRFQ

S1J

YAGEOIn Stock: 5883S1J Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LL4005G L0G is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) rating must equal or exceed 600V
• Current - Average Rectified (Io) must equal or exceed 1A
• Voltage - Forward (Vf) must not exceed 1.1V at 1A forward current
• Current - Reverse Leakage must not exceed 5µA at 600V
• Recovery speed classification must be Standard or faster

Mechanical Compatibility Criteria:

• Package type must be Surface Mount MELF (DO-213AB) or equivalent footprint-compatible alternative
• Moisture Sensitivity Level must be 1 (Unlimited) or equivalent
• RoHS3 compliance required for regulatory alignment

The S1J manufactured by YAGEO qualifies as a functional substitute based on matching electrical ratings and regulatory compliance status, though package designation differs (DO-214AC versus DO-213AB). Physical footprint compatibility must be verified during design integration.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The LL4005G L0G is classified as obsolete. The S1J from YAGEO is an active product with current manufacturing support and significantly higher inventory availability (5851 pieces versus 735 pieces). This status differential establishes the S1J as the preferred long-term alternative for new designs and ongoing procurement.

Regulatory and Compliance Alignment

Both the LL4005G L0G and S1J maintain ROHS3 compliance, EAR99 export classification, and identical HTSUS coding. Both components carry MSL 1 (Unlimited) moisture sensitivity ratings, eliminating moisture-related handling constraints. These equivalencies ensure regulatory continuity across substitution.

Electrical Parameter Compatibility

The S1J meets or exceeds all critical electrical specifications: 600V reverse voltage rating, 1.1A average rectified current (exceeding the 1A requirement), and 1.1V forward voltage at 1A. Reverse leakage current specifications are not provided for the S1J in the input data; however, the electrical ratings provided establish functional equivalence for general-purpose rectification applications.

Package Consideration

The primary differentiation between these components is package designation: LL4005G L0G uses DO-213AB (MELF), while S1J uses DO-214AC. Both are surface-mount packages. Physical footprint compatibility must be confirmed through package dimension comparison during circuit board layout verification.

Frequently Asked Questions (FAQ)

Q: Can the S1J directly replace the LL4005G L0G in existing circuit designs?

A: Electrical substitution is valid based on voltage, current, and forward voltage specifications. However, package footprint differences (DO-213AB versus DO-214AC) require physical verification. PCB layout modifications may be necessary if pad patterns differ.

Q: Why is the LL4005G L0G classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The S1J represents an active alternative with ongoing manufacturing support and superior inventory availability.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both components share identical RoHS3 compliance, EAR99 export classification, HTSUS coding, and MSL 1 moisture sensitivity ratings.

Q: What is the significance of the higher current rating on the S1J (1.1A versus 1A)?

A: The S1J's 1.1A average rectified current rating exceeds the LL4005G L0G requirement of 1A, providing additional design margin. This represents a compatible upgrade with no negative impact on circuit performance.

Q: How should package compatibility be verified?

A: Obtain detailed package dimension drawings for both DO-213AB (MELF) and DO-214AC packages from the respective manufacturers. Compare lead spacing, body dimensions, and pad patterns against your PCB design specifications.

Q: Is the S1J suitable for new product designs?

A: Yes. The S1J is an active product with current manufacturing support, making it appropriate for new designs requiring 600V, 1A general-purpose rectification in surface-mount form factor.