LL5818 L0G Schottky Diode Equivalent & Substitute Parts

Part Overview

The LL5818 L0G is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 30 V DC reverse voltage and 1 A average rectified current in a surface mount MELF package. This component is designed for fast recovery applications requiring switching speeds of 500 nanoseconds or less at currents exceeding 200 milliamperes. The part is ROHS3 compliant with unlimited moisture sensitivity rating and remains in active production status. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

LL5818 L0G

Taiwan Semiconductor CorporationIn Stock: 822LL5818 L0G Datasheet

Current PartRFQ

BYM13-30-E3/96

Vishay General Semiconductor - Diodes DivisionIn Stock: 4838BYM13-30-E3/96 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LL5818 L0G is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) Maximum: 30 V
• Current - Average Rectified (Io): 1 A
• Recovery Speed: Fast Recovery ≤ 500 ns at > 200 mA
• Current - Reverse Leakage @ Vr: 500 µA @ 30 V
• Capacitance @ Vr, Frequency: 110 pF @ 4V, 1MHz
• Technology: Schottky

Mechanical Equivalence Criteria:

• Package / Case: DO-213AB, MELF
• Mounting Type: Surface Mount

Compliance Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The BYM13-30-E3/96 manufactured by Vishay General Semiconductor - Diodes Division meets all electrical and mechanical equivalence criteria. Variations in forward voltage specification (500 mV @ 1 A versus 875 mV @ 3 A) and operating temperature range (-55°C to 125°C versus -65°C to 125°C) do not preclude substitution when the application operating conditions fall within the substitute part's rated parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: LL5818 L0G

The LL5818 L0G remains the primary component choice when available. This part is in active production status with 713 pieces in current inventory. The extended operating temperature range of -65°C to 125°C provides additional thermal margin for applications requiring operation at lower ambient temperatures. ROHS3 compliance and unlimited moisture sensitivity rating ensure compatibility with modern manufacturing and storage environments.

Substitute Selection: BYM13-30-E3/96

The BYM13-30-E3/96 is a direct electrical and mechanical substitute when LL5818 L0G availability is constrained. This Vishay component maintains equivalent reverse voltage, rectified current, recovery speed, reverse leakage current, and capacitance specifications. The part is supplied in Tape & Reel packaging with 4800 pieces in current inventory, providing superior supply availability. ROHS3 compliance and unlimited moisture sensitivity rating match the primary part.

Compatibility Considerations:

The BYM13-30-E3/96 forward voltage specification of 500 mV @ 1 A is lower than the LL5818 L0G specification of 875 mV @ 3 A. This difference reflects measurement conditions rather than functional incompatibility. Applications operating at 1 A or below will experience lower forward voltage drop with the substitute part, resulting in reduced power dissipation. The operating temperature range of -55°C to 125°C is suitable for applications not requiring operation below -55°C junction temperature.

Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8541.10.0080, ensuring regulatory and trade compliance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the BYM13-30-E3/96 be used as a direct replacement for the LL5818 L0G in all applications?

A: The BYM13-30-E3/96 is a direct substitute when the application operating temperature range does not require junction temperatures below -55°C. Both parts share identical reverse voltage (30 V), rectified current (1 A), recovery speed (≤ 500 ns), reverse leakage current (500 µA @ 30 V), and capacitance (110 pF @ 4V, 1MHz) specifications. The substitute part's lower forward voltage drop (500 mV @ 1 A) is advantageous in most applications.

Q: What is the significance of the forward voltage difference between these parts?

A: Forward voltage is measured under specific current conditions. The LL5818 L0G specifies 875 mV @ 3 A, while the BYM13-30-E3/96 specifies 500 mV @ 1 A. At the rated 1 A operating current, the BYM13-30-E3/96 will exhibit lower forward voltage drop, reducing power dissipation and heat generation. This is beneficial for thermal management in power-sensitive applications.

Q: Are both parts suitable for high-frequency switching applications?

A: Yes. Both the LL5818 L0G and BYM13-30-E3/96 are specified for fast recovery operation with switching speeds of 500 nanoseconds or less at currents exceeding 200 milliamperes. This recovery speed supports high-frequency rectification and switching applications.

Q: What is the difference in operating temperature range between these parts?

A: The LL5818 L0G operates from -65°C to 125°C junction temperature, while the BYM13-30-E3/96 operates from -55°C to 125°C. The LL5818 L0G provides an additional 10°C of low-temperature margin. For applications requiring operation below -55°C junction temperature, the LL5818 L0G is required.

Q: Are the package and mounting specifications identical?

A: Yes. Both parts use the DO-213AB MELF package with surface mount technology. The physical footprint, lead spacing, and soldering requirements are identical, enabling direct PCB layout compatibility.

Q: What packaging options are available for each part?

A: The LL5818 L0G is supplied in standard packaging (specific format not detailed in available specifications). The BYM13-30-E3/96 is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Q: Do both parts meet current regulatory compliance requirements?

A: Yes. Both the LL5818 L0G and BYM13-30-E3/96 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both parts carry unlimited moisture sensitivity rating (MSL 1), eliminating moisture-related handling restrictions.

Q: Which part should be selected for new designs?

A: For new designs, either part is acceptable based on application requirements. If the design operates at temperatures below -55°C junction temperature, the LL5818 L0G is required. For applications within the -55°C to 125°C range, the BYM13-30-E3/96 offers superior supply availability and lower forward voltage characteristics.