LL103B-GS18 Equivalent & Substitute Parts

Part Overview

The LL103B-GS18 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 30 V DC reverse voltage and 200 mA average rectified current in a surface mount SOD-80 MiniMELF package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the Schottky diode rectifier category. Alternative sources and packaging configurations are available to support procurement flexibility, inventory availability, and supply chain continuity.

Substiute Parts

LL103B-GS18

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

Current PartRFQ

LL103B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 5214LL103B-GS08 Datasheet

Parametric EquivalentRFQ

BAS85,115

Nexperia USA Inc.In Stock: 235206BAS85,115 Datasheet

MFR RecommendedRFQ

BAS85,135

Nexperia USA Inc.In Stock: 4485BAS85,135 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LL103B-GS18 is determined by equivalence in the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 200 mA
• Technology: Schottky
• Speed Classification: Small Signal ≤ 200 mA (Io), Any Speed

Mechanical Compatibility Criteria:

• Package / Case: DO-213AC, MINI-MELF, SOD-80
• Mounting Type: Surface Mount
• Supplier Device Package: SOD-80 MiniMELF or LLDS MiniMelf

Compliance Criteria:

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

Substitute parts maintain identical or superior performance in reverse voltage rating, average rectified current capacity, and thermal operating range. Packaging and mounting configurations remain compatible with SOD-80 MiniMELF footprints. All identified substitutes are active products with current manufacturing status and full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

LL103B-GS08 (Vishay General Semiconductor)

The LL103B-GS08 is a parametric equivalent to the LL103B-GS18, sharing identical electrical specifications including 30 V reverse voltage rating, 200 mA average rectified current, 600 mV forward voltage at 200 mA, 10 ns reverse recovery time, and 50 pF capacitance. Both parts are manufactured by Vishay General Semiconductor and utilize the same SOD-80 MiniMELF package. The primary distinction is packaging configuration: LL103B-GS08 is supplied in Cut Tape (CT) & Digi-Reel® format with 5200 pieces in stock, compared to the LL103B-GS18 Tape & Reel (TR) format with 810 pieces in stock. Both parts maintain Active product status, ROHS3 compliance, and MSL 1 rating. Selection between these variants depends on procurement quantity requirements and tape format compatibility with assembly equipment.

BAS85,115 (Nexperia USA Inc.)

The BAS85,115 is a manufacturer-recommended substitute from Nexperia USA Inc., maintaining the 30 V reverse voltage and 200 mA average rectified current specifications. This part is supplied in Cut Tape (CT) & Digi-Reel® packaging with 235,100 pieces in stock, providing significant inventory availability. The BAS85,115 exhibits lower reverse leakage current (2.3 µA @ 25 V versus 5 µA @ 20 V) and reduced capacitance (10 pF @ 1 V, 1 MHz versus 50 pF @ 0 V, 1 MHz), which may provide performance advantages in high-frequency or low-leakage applications. Forward voltage specification differs at the measurement point (800 mV @ 100 mA versus 600 mV @ 200 mA). The part is Active, ROHS3 compliant, and MSL 1 rated. The LLDS MiniMelf package designation indicates compatibility with SOD-80 MiniMELF footprints.

BAS85,135 (Nexperia USA Inc.)

The BAS85,135 is a manufacturer-recommended substitute from Nexperia USA Inc., identical in electrical specifications to the BAS85,115 with 30 V reverse voltage, 200 mA average rectified current, 2.3 µA reverse leakage, and 10 pF capacitance. This variant is supplied in Tape & Reel (TR) packaging with 4,390 pieces in stock, matching the tape format of the LL103B-GS18. The BAS85,135 maintains Active product status, ROHS3 compliance, and MSL 1 rating. Selection of BAS85,135 over BAS85,115 is appropriate when Tape & Reel packaging format is required for assembly line compatibility.

All substitute parts are Active products with current manufacturing status and full regulatory compliance. Selection criteria should prioritize packaging format compatibility with existing assembly equipment and procurement quantity requirements.

Frequently Asked Questions (FAQ)

Q: Can LL103B-GS08 be used as a direct replacement for LL103B-GS18?

A: Yes. The LL103B-GS08 is a parametric equivalent with identical electrical specifications: 30 V reverse voltage, 200 mA average rectified current, 600 mV forward voltage at 200 mA, 10 ns reverse recovery time, and 50 pF capacitance. Both parts use the SOD-80 MiniMELF package and are manufactured by Vishay General Semiconductor. The difference is packaging format: LL103B-GS08 is Cut Tape (CT) & Digi-Reel® while LL103B-GS18 is Tape & Reel (TR). Compatibility depends on assembly equipment tape format requirements.

Q: What are the key differences between Vishay LL103B and Nexperia BAS85 substitutes?

A: Both maintain 30 V reverse voltage and 200 mA average rectified current ratings. The primary differences are: (1) Forward voltage measurement conditions differ—LL103B specifies 600 mV @ 200 mA while BAS85 specifies 800 mV @ 100 mA; (2) Reverse leakage current is lower in BAS85 (2.3 µA @ 25 V versus 5 µA @ 20 V); (3) Capacitance is significantly lower in BAS85 (10 pF @ 1 V, 1 MHz versus 50 pF @ 0 V, 1 MHz). These differences may affect performance in high-frequency or low-leakage applications.

Q: Are BAS85,115 and BAS85,135 electrically identical?

A: Yes. BAS85,115 and BAS85,135 are electrically identical, both rated for 30 V reverse voltage, 200 mA average rectified current, 2.3 µA reverse leakage, and 10 pF capacitance. The distinction is packaging format: BAS85,115 is Cut Tape (CT) & Digi-Reel® while BAS85,135 is Tape & Reel (TR). Selection depends on assembly equipment compatibility and procurement format requirements.

Q: Do all substitute parts use the same SOD-80 MiniMELF package?

A: Yes. All identified substitutes—LL103B-GS08, BAS85,115, and BAS85,135—use the DO-213AC, MINI-MELF, SOD-80 package designation or equivalent LLDS MiniMelf package. All are surface mount components with identical footprint compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The LL103B-GS18 and all identified substitutes (LL103B-GS08, BAS85,115, BAS85,135) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are Active products with current manufacturing status.

Q: Which substitute offers the best inventory availability?

A: The BAS85,115 from Nexperia USA Inc. offers the highest inventory availability with 235,100 pieces in stock, compared to 5,200 pieces for LL103B-GS08 and 4,390 pieces for BAS85,135. The original LL103B-GS18 has 810 pieces in stock.

Q: Can I use BAS85 substitutes in applications requiring the exact forward voltage specification of LL103B?

A: Forward voltage specifications differ between manufacturers and measurement conditions. LL103B specifies 600 mV @ 200 mA while BAS85 specifies 800 mV @ 100 mA. Applications with strict forward voltage requirements should evaluate whether the BAS85 specification at 100 mA measurement point is acceptable for the intended circuit operation.

Q: What is the significance of lower capacitance in BAS85 substitutes?

A: BAS85 parts exhibit 10 pF capacitance @ 1 V, 1 MHz compared to 50 pF in LL103B parts @ 0 V, 1 MHz. Lower capacitance reduces parasitic effects in high-frequency circuits and may improve switching performance in applications sensitive to junction capacitance.