LL5818 L0 Schottky Diode Equivalent & Substitute Parts

Part Overview

The LL5818 L0 is a Schottky rectifier diode rated for 30 V DC reverse voltage and 1 A average rectified current in a surface mount MELF package. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The LL5818 L0G serves as the direct active substitute, offering identical electrical ratings and mechanical compatibility while maintaining current manufacturing status.

Substiute Parts

LL5818 L0

Taiwan Semiconductor CorporationIn Stock: 710LL5818 L0 Datasheet

Current PartRFQ

LL5818 L0G

Taiwan Semiconductor CorporationIn Stock: 822LL5818 L0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LL5818 L0 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 1 A
• Package / Case: DO-213AB, MELF
• Mounting Type: Surface Mount
• Technology: Schottky
• Operating Temperature - Junction: -65°C to 125°C

The LL5818 L0G is classified as a direct manufacturer substitute. It maintains identical reverse voltage, average rectified current, package configuration, and thermal operating range. Both parts are manufactured by Taiwan Semiconductor Corporation and comply with ROHS3, REACH, and identical moisture sensitivity specifications.

Parameter Comparison

Engineering Selection Recommendations

The LL5818 L0G is the direct active equivalent for the obsolete LL5818 L0. Both parts are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications for reverse voltage, average rectified current, reverse leakage current, capacitance, and recovery speed characteristics. Both components are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings.

The primary distinction is product status: the LL5818 L0 is obsolete, while the LL5818 L0G maintains active manufacturing status. This transition ensures continued availability and supply chain reliability for new designs and production requirements.

Both parts are suitable for applications requiring 30 V Schottky rectification at 1 A average current in surface mount MELF packaging. The identical operating temperature range (-65°C to 125°C) and package configuration ensure direct mechanical and thermal compatibility in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the LL5818 L0G replace the LL5818 L0 in existing designs?

A: Yes. The LL5818 L0G is the direct active equivalent. Both parts share identical reverse voltage (30 V), average rectified current (1 A), package configuration (DO-213AB, MELF), mounting type (surface mount), and operating temperature range (-65°C to 125°C). No circuit modifications are required.

Q: What is the difference between the LL5818 L0 and LL5818 L0G?

A: The LL5818 L0G is the active production version of the LL5818 L0. The primary difference is product status: LL5818 L0 is obsolete, while LL5818 L0G is actively manufactured. Electrical and mechanical specifications are equivalent.

Q: Are there any compliance differences between these parts?

A: No. Both the LL5818 L0 and LL5818 L0G are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). Both share the same ECCN (EAR99) and HTSUS classification.

Q: What does the forward voltage difference in the datasheet mean?

A: The forward voltage specifications are measured at different test conditions. The LL5818 L0 specifies 550 mV @ 1 A, while the LL5818 L0G specifies 875 mV @ 3 A. These represent measurements at different current levels and do not indicate incompatibility. At the rated 1 A operating point, both parts function within their design parameters.

Q: Is the MELF package suitable for automated assembly?

A: Yes. The MELF package (DO-213AB) is a surface mount package designed for automated pick-and-place and reflow soldering processes. Both the LL5818 L0 and LL5818 L0G use this standard surface mount configuration.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. The LL5818 L0 and LL5818 L0G share identical package dimensions (DO-213AB, MELF) and mounting type (surface mount). They are pin-for-pin and footprint-compatible with no PCB layout modifications required.