LLSD103C-13 Equivalent & Substitute Parts

Part Overview

The LLSD103C-13 is a Schottky diode manufactured by Diodes Incorporated, rated for 20 V DC reverse voltage with 350 mA average rectified current. This component is packaged in a Mini MELF (DO-213AA) surface mount configuration and features a fast recovery time of 10 ns with a forward voltage of 600 mV at 200 mA.

The LLSD103C-13 is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode specification.

Substiute Parts

LLSD103C-13

Diodes IncorporatedIn Stock: 770LLSD103C-13 Datasheet

Current PartRFQ

LL103C-GS18

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LLSD103C-13 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 20 V
• Voltage - Forward (Vf) (Max) @ If: Must not exceed 600 mV @ 200 mA
• Reverse Recovery Time (trr): Must equal or be faster than 10 ns
• Current - Reverse Leakage @ Vr: Must not exceed 5 µA @ 10 V
• Capacitance @ Vr, F: Must not exceed 50 pF @ 0V, 1MHz
• Technology: Must be Schottky diode type

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount required
• Package / Case: Mini MELF or equivalent footprint compatibility

Current Rating Consideration: The LLSD103C-13 is rated for 350 mA average rectified current. Substitute parts with lower current ratings (such as 200 mA) operate within reduced current capacity and must be evaluated for application-specific current requirements.

Parameter Comparison

Engineering Selection Recommendations

LL103C-GS18 as Primary Substitute:

The LL103C-GS18 manufactured by Vishay General Semiconductor - Diodes Division is the designated manufacturer-recommended substitute for the LLSD103C-13. This part maintains electrical equivalence across all critical parameters: reverse voltage (20 V), forward voltage (600 mV @ 200 mA), reverse recovery time (10 ns), reverse leakage current (5 µA @ 10 V), and junction capacitance (50 pF @ 0V, 1MHz).

Product Status Advantage: The LL103C-GS18 carries Active product status, ensuring continued availability and manufacturing support, whereas the LLSD103C-13 is Obsolete. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Current Rating Consideration: The LL103C-GS18 is rated for 200 mA average rectified current, compared to the LLSD103C-13 rating of 350 mA. Applications requiring sustained current operation above 200 mA must evaluate whether the reduced current capacity of the substitute part meets circuit requirements.

Package Compatibility: Both parts utilize Mini MELF surface mount packaging. The LLSD103C-13 uses DO-213AA package designation, while the LL103C-GS18 uses DO-213AC (SOD-80 MiniMELF) designation. These packages share compatible footprints for PCB placement and soldering operations.

Compliance Status: Both parts are ROHS3 compliant. The LLSD103C-13 carries REACH Affected status, while the LL103C-GS18 carries REACH Unaffected status. Applications subject to REACH regulatory requirements should account for this distinction.

Frequently Asked Questions (FAQ)

Q: Can the LL103C-GS18 directly replace the LLSD103C-13 in all applications?

A: The LL103C-GS18 provides electrical equivalence across all specified parameters. However, the reduced current rating (200 mA versus 350 mA) requires verification that application current demands do not exceed 200 mA sustained operation. Package footprints are compatible for PCB placement.

Q: What is the significance of the current rating difference between these parts?

A: The LLSD103C-13 is rated for 350 mA average rectified current, while the LL103C-GS18 is rated for 200 mA. This difference defines the maximum sustained current each diode can conduct without exceeding thermal and reliability limits. Applications operating at currents between 200 mA and 350 mA must use the original LLSD103C-13 specification or identify alternative parts with higher current ratings.

Q: Are the DO-213AA and DO-213AC packages interchangeable?

A: Both packages are Mini MELF surface mount configurations with compatible footprints. The DO-213AA (LLSD103C-13) and DO-213AC/SOD-80 (LL103C-GS18) designations reflect manufacturer packaging conventions but share equivalent PCB land patterns and soldering requirements.

Q: What is the impact of REACH Affected versus REACH Unaffected status?

A: REACH Affected status (LLSD103C-13) indicates the part may contain substances of concern under REACH regulations and requires compliance documentation. REACH Unaffected status (LL103C-GS18) indicates the part does not contain such substances. Applications subject to REACH regulatory requirements should select the LL103C-GS18 to simplify compliance documentation.

Q: Why is the LLSD103C-13 classified as Obsolete?

A: Obsolete classification indicates the manufacturer has discontinued production and support for this part number. The LL103C-GS18 is designated as the active replacement, ensuring continued supply chain availability and manufacturing support.

Q: Are the electrical characteristics identical between these parts?

A: Yes. Both parts share identical specifications for reverse voltage (20 V), forward voltage (600 mV @ 200 mA), reverse recovery time (10 ns), reverse leakage current (5 µA @ 10 V), and junction capacitance (50 pF @ 0V, 1MHz). The primary difference is the current rating and product status.

Q: What compliance certifications apply to both parts?

A: Both the LLSD103C-13 and LL103C-GS18 are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited). Both are classified under ECCN EAR99 and HTSUS 8541.10.0070.