LL103C-7 Equivalent & Substitute Parts

Part Overview

The LL103C-7 is a Schottky diode rated for 20 V DC reverse voltage with 200 mA average rectified current in a surface mount SOD-80 MiniMELF package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts with active product status are necessary for new designs and ongoing production requirements. Substitute parts maintain electrical compatibility while offering improved availability and long-term supply assurance.

Substiute Parts

LL103C-7

Vishay General Semiconductor - Diodes DivisionIn Stock: 1131LL103C-7 Datasheet

Current PartRFQ

LL103B-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 855LL103B-GS18 Datasheet

MFR RecommendedRFQ

LL103C-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 32977LL103C-GS08 Datasheet

Parametric EquivalentRFQ

LL103C-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 4846LL103C-GS18 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LL103C-7 is determined by strict electrical and mechanical parameter matching within the Schottky diode category. The primary substitution criteria are:

Electrical Parameters (Must Match or Exceed):

• Voltage - DC Reverse (Vr) (Max): 20 V minimum
• Current - Average Rectified (Io): 200 mA minimum
• Voltage - Forward (Vf) (Max) @ If: 600 mV @ 200 mA maximum
• Reverse Recovery Time (trr): 10 ns maximum
• Current - Reverse Leakage @ Vr: 5 µA @ 10 V maximum
• Capacitance @ Vr, F: 50 pF @ 0V, 1MHz maximum

Mechanical Parameters (Must Match):

• Package / Case: DO-213AC, MINI-MELF, SOD-80
• Mounting Type: Surface Mount
• Technology: Schottky

Substitute parts are classified into two categories:

MFR Recommended Substitute: LL103B-GS18 exceeds the reverse voltage specification (30 V vs. 20 V) while maintaining all other electrical parameters. This part is recommended for applications where higher voltage margin is acceptable.

Parametric Equivalents: LL103C-GS08 and LL103C-GS18 match all electrical and mechanical specifications of the LL103C-7 with identical parameter values. These parts differ only in packaging configuration (Tape & Reel vs. bulk packaging).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

LL103C-GS08 and LL103C-GS18 are parametric equivalents of the LL103C-7, matching all electrical specifications and package requirements. Both parts carry Active product status, ensuring long-term availability and supply continuity. Selection between these two equivalents depends on packaging requirements: LL103C-GS08 and LL103C-GS18 are supplied in Tape & Reel configuration, suitable for automated assembly processes. Both parts are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements.

For Enhanced Voltage Margin:

LL103B-GS18 is the manufacturer-recommended substitute, offering 30 V reverse voltage rating compared to the 20 V specification of the LL103C-7. This part maintains identical forward voltage, current rating, and switching characteristics. LL103B-GS18 is supplied in Tape & Reel configuration and carries Active product status. This substitute is appropriate for applications where increased reverse voltage headroom is beneficial without circuit redesign.

All substitute parts are manufactured by Vishay General Semiconductor - Diodes Division, maintaining design consistency and quality standards. Compliance certifications (ROHS3, REACH Unaffected) are uniform across all options.

Frequently Asked Questions (FAQ)

Q: Can LL103C-GS08 and LL103C-GS18 be used interchangeably with LL103C-7?

A: Yes. LL103C-GS08 and LL103C-GS18 are parametric equivalents with identical electrical specifications (20 V reverse voltage, 200 mA current, 600 mV forward voltage @ 200 mA, 10 ns reverse recovery time). All three parts use the same SOD-80 MiniMELF package. The primary difference is packaging configuration: LL103C-GS08 and LL103C-GS18 are supplied in Tape & Reel format, while LL103C-7 was supplied in bulk packaging.

Q: What is the difference between LL103B-GS18 and the parametric equivalents?

A: LL103B-GS18 has a higher reverse voltage rating of 30 V compared to 20 V for LL103C-7, LL103C-GS08, and LL103C-GS18. All other electrical parameters (forward voltage, current rating, reverse recovery time, capacitance) are identical. LL103B-GS18 is suitable for applications requiring additional voltage margin.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts (LL103B-GS18, LL103C-GS08, LL103C-GS18) use the DO-213AC, MINI-MELF, SOD-80 surface mount package, identical to the LL103C-7. This ensures mechanical compatibility with existing PCB layouts and assembly processes.

Q: What is the product status difference, and why does it matter?

A: The LL103C-7 is classified as Obsolete, indicating discontinued manufacturing and limited availability. All substitute parts (LL103B-GS18, LL103C-GS08, LL103C-GS18) carry Active product status, confirming ongoing production and long-term supply availability. Active status is essential for new designs and sustained production runs.

Q: Do all parts meet current regulatory requirements?

A: Yes. All parts listed—LL103C-7, LL103B-GS18, LL103C-GS08, and LL103C-GS18—are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards.

Q: Which substitute should be selected for new designs?

A: For new designs requiring direct electrical equivalence, LL103C-GS08 or LL103C-GS18 are appropriate selections. Both are parametric equivalents with Active product status and Tape & Reel packaging suitable for automated assembly. If increased reverse voltage margin is desired, LL103B-GS18 is the manufacturer-recommended option.