LL4151-M-08 Equivalent & Substitute Parts

Part Overview

The LL4151-M-08 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, classified within the Diodes, Rectifiers category. This surface mount component operates at 50 V DC reverse voltage with 300 mA average rectified current capacity, housed in a SOD-80 MiniMELF package. The part maintains Active product status and carries automotive-grade qualification under AEC-Q101 standard. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or packaging format preferences while maintaining identical functional specifications.

Substiute Parts

LL4151-M-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1212LL4151-M-08 Datasheet

Current PartRFQ

LL4151-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 27041LL4151-GS18 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LL4151-M-08 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part LL4151-GS18 qualifies as a parametric equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Voltage - DC Reverse (Vr) (Max): 50 V (identical)
• Current - Average Rectified (Io): 300 mA (identical)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 50 mA (identical)
• Reverse Recovery Time (trr): 4 ns (identical)
• Current - Reverse Leakage @ Vr: 50 nA @ 50 V (identical)
• Capacitance @ Vr, F: 2 pF @ 0V, 1MHz (identical)
• Operating Temperature - Junction (Max): 175°C (identical)

Mechanical & Compliance Equivalence:

• Package / Case: DO-213AC, MINI-MELF, SOD-80 (identical)
• Mounting Type: Surface Mount (identical)
• Grade: Automotive (identical)
• Qualification: AEC-Q101 (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (identical)

Packaging Format Difference: The primary distinction between LL4151-M-08 and LL4151-GS18 is the supply packaging format: LL4151-M-08 is supplied in Tape & Reel (TR) configuration, while LL4151-GS18 is supplied in Cut Tape (CT) configuration. Both formats contain identical component specifications and are suitable for automated assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Both LL4151-M-08 and LL4151-GS18 are Active products manufactured by Vishay General Semiconductor - Diodes Division with identical electrical specifications and mechanical compatibility. Selection between these parts is determined by supply chain requirements and packaging format availability:

LL4151-M-08 (Tape & Reel): Suitable for high-volume automated assembly operations requiring continuous reel-fed component supply. Tape & Reel packaging optimizes pick-and-place machine efficiency and reduces component handling.

LL4151-GS18 (Cut Tape): Suitable for lower-volume production runs, prototype development, or applications where smaller quantity increments are required. Cut Tape packaging provides flexibility in component quantity selection without requiring full reel commitments.

Both parts maintain identical compliance certifications: AEC-Q101 automotive qualification, ROHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating. Electrical performance, thermal characteristics, and mechanical package dimensions are fully interchangeable. Component selection should be based on manufacturing process requirements and inventory management protocols rather than technical performance differentiation.

Frequently Asked Questions (FAQ)

Q: Can LL4151-GS18 be used as a direct replacement for LL4151-M-08 in production assembly?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tape & Reel versus Cut Tape). If your assembly equipment supports Cut Tape feeding, LL4151-GS18 provides full functional equivalence. Verify your pick-and-place machine specifications for Cut Tape compatibility.

Q: Are there any electrical performance differences between LL4151-M-08 and LL4151-GS18?

A: No. All electrical parameters are identical: 50 V reverse voltage, 300 mA average rectified current, 1 V forward voltage at 50 mA, 4 ns reverse recovery time, and 50 nA reverse leakage current at 50 V. Both parts meet identical automotive-grade specifications under AEC-Q101 qualification.

Q: Do both parts have the same package dimensions and PCB footprint?

A: Yes. Both LL4151-M-08 and LL4151-GS18 use the DO-213AC MINI-MELF SOD-80 package. PCB footprints, solder pad layouts, and component placement coordinates are identical. No PCB redesign is required when substituting between these parts.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) supplies components on a continuous plastic carrier tape wound on a reel, optimized for automated high-speed assembly. Cut Tape (CT) supplies the same components on shorter tape segments, typically 50-500 piece quantities, suitable for manual assembly or lower-volume production. Both formats contain identical components with identical specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both LL4151-M-08 and LL4151-GS18 are ROHS3 Compliant. Both parts are also REACH Unaffected and carry identical environmental compliance certifications.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related storage restrictions. Standard component storage conditions are sufficient; no desiccant packaging or baking procedures are required prior to assembly.

Q: Can these parts be used in automotive applications?

A: Yes. Both LL4151-M-08 and LL4151-GS18 carry Automotive Grade classification and AEC-Q101 qualification, meeting automotive industry reliability and quality standards. Both parts are suitable for automotive circuit applications within specified electrical and thermal operating ranges.